Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 07-15-2015, 02:27 PM #257
gif's Avatar
gif gif is offline
Class 2 Laser
 
Join Date: Mar 2012
Location: Ontario
Posts: 285
Rep Power: 443
gif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond repute
gif gif is offline
Class 2 Laser
gif's Avatar
 
Join Date: Mar 2012
Location: Ontario
Posts: 285
Rep Power: 443
gif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond reputegif has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Pman View Post
^It would seem odd to not have enough leeway on the glass. I would like to see a diode run at 5A for a decent amount of time with no lens if this keeps happening. Are we absolutely certain there isn't too much reflected light back onto it? I'm certainly no expert, just throwing it out there. Is that glass absolutely clear with no coating on it? Wish I had the $ to try some things out to help but I can't afford to potentially blow that much Seriously thank you all for going through all the testing and talking it out right here in the forum so we can all follow along
I agree, really appreciate all the folks doing testing on this and providing such detailed feedback.

I am waiting for things to settle down a bit with this diode, before even thinking of doing anything with it


__________________
gif


LASERS:
Oh I got few

Goggles
Cert. OEM ARG
3 - Non Cert 405nm/445nm goggles
gif is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 07-15-2015, 03:27 PM #258
TaterMay's Avatar
Class 2 Laser
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
TaterMay TaterMay is offline
Class 2 Laser
TaterMay's Avatar
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by planters View Post
I strongly agree. These diodes may seem bright, but the laser intensity of the highly divergent beam is no where near the typical damage threshold for CLEAN optics. A reasonable number for this is 100kW/cm^2. That is 1kW/mm^2. If the window is 1mm from the face of the crystal then based on the fast and slow divergence of other 445nm diodes,I believe the spot on the window would be about 0.1mm^2.

A small particle of dirt or absorbing film can raise the local temperature to the point where the particle or film carbonizes or smokes, thereby increasing the absorption and so on.
I also strongly agree with this. We have 16 4kW Trumpf lasers here at work. They have AR coated cover glasses in place to prevent any contaminants from getting on the five optic cables. There are three 1,333+ watt beams that are brought together passing through the glass all day(not continually; off and on), 6 to 7 days a week. The only time maintenance has to change these cover glasses is when debris gets on them and causes it to burn the glass. And this is with 900+nm(we use a few different IR wavelengths) diodes, which, correct me if I'm wrong, are absorbed by pretty much all materials much better than the visible wavelengths. So I highly doubt the glass is causing the issue without being contaminated somehow. I just had an NDB7875 burn a hole through the window. I believe it was caused by some debris from a heatsink with some TINY particles from the machining process. It happens. When you are dealing with such a concentrated beam of energy, even the tiniest of particles can cause serious problems.

Edit: Link to image of my NDB7875(less than half the power of the NUBM44) that I burnt the window on. I look at each diode under a microscope just before I power it up, and it appeared to be 100% clean. I really don't think these diodes are anywhere near the power threshold required to burn clean glass.


Last edited by TaterMay; 07-15-2015 at 06:31 PM.
TaterMay is offline   Reply With Quote
Old 07-15-2015, 07:53 PM #259
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Looks like a heat fracture. Did it give out while running or when you first turned it on after having the lens out?
RedCowboy is online now   Reply With Quote
Old 07-15-2015, 08:47 PM #260
TaterMay's Avatar
Class 2 Laser
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
TaterMay TaterMay is offline
Class 2 Laser
TaterMay's Avatar
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

After switching the 3-element lens out for a G2. Upon inspection, there were a fair amount of TINY particles in the threads of the module.
TaterMay is offline   Reply With Quote
Old 07-15-2015, 10:35 PM #261
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by TaterMay View Post
After switching the 3-element lens out for a G2. Upon inspection, there were a fair amount of TINY particles in the threads of the module.
Yes I understand, but in the interest of sharing knowledge can you tell us if it was messed up the moment you turned it on after having the lens out or did it fail in the middle of use after you turned it on and it was working just fine?
Mine for instance was cracked the moment I turned it on after having the lens out twice this last week on 2 different diodes in high humidity. I think it was rapid temp change fracturing due to high humidity in an air conditioned room. That's not to say things can't get burned onto the window, I have seen blotches in the raw output where something tiny is stuck to the glass. But dead center fractures are looking like rapid temp change shock. I have pics up that look just like yours.
RedCowboy is online now   Reply With Quote
Old 07-16-2015, 01:53 AM #262
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

When I inspected the NUBM diode window it had produced a faint yellow reflection. This is the same as the G9 lens and similar to other blue, anti reflection lenses I have in stock. I'm pretty certain the window is coated. The highly divergent beam reflected by the flat window will continue to diverge as it returns to the diode face. It is unlikely the retro-reflection from an AR coated window would damage the diode.

Although I'm also pretty sure the window failures will be contamination related, you could try a test. Run a relatively inexpensive M-series diode at a watt or so and then spray the window with some canned air. If this doesn't break it you could actually dip the front of the can in distilled water while the laser was running. My bet is that it won't break, but I may be wrong.

Interestingly, the very high end optics manufacturers take into account the tiny spherical aberration these thin windows generate in the divergent beam and the collimating lens is designed for either a windowed or window free diode.
planters is offline   Reply With Quote
Old 07-16-2015, 02:24 AM #263
TaterMay's Avatar
Class 2 Laser
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
TaterMay TaterMay is offline
Class 2 Laser
TaterMay's Avatar
 
Join Date: May 2015
Location: Birmingham, AL
Posts: 350
Rep Power: 93
TaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond reputeTaterMay has a reputation beyond repute
Default

Quote:
Originally Posted by planters View Post
When I inspected the NUBM diode window it had produced a faint yellow reflection. This is the same as the G9 lens and similar to other blue, anti reflection lenses I have in stock. I'm pretty certain the window is coated. The highly divergent beam reflected by the flat window will continue to diverge as it returns to the diode face. It is unlikely the retro-reflection from an AR coated window would damage the diode.

Although I'm also pretty sure the window failures will be contamination related, you could try a test. Run a relatively inexpensive M-series diode at a watt or so and then spray the window with some canned air. If this doesn't break it you could actually dip the front of the can in distilled water while the laser was running. My bet is that it won't break, but I may be wrong.

Interestingly, the very high end optics manufacturers take into account the tiny spherical aberration these thin windows generate in the divergent beam and the collimating lens is designed for either a windowed or window free diode.
I have also noticed what appears to be an AR coating on all the 445 diodes I've used. I can't really say exactly when it went bad. I just suddenly noticed the beam wasn't focusing correctly. I had powered it on for 15 seconds or so before I noticed it I believe.
TaterMay is offline   Reply With Quote
Old 07-16-2015, 02:30 AM #264
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,070
Rep Power: 47613
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,070
Rep Power: 47613
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

The thought occurred to me to try to break the glass window on my NUBM44, but it is so close to the diode inside I fear I would easily damage it, I guess you got away with it but I bet you are lucky, most would just kill the diode doing that, I think.

Quote:
Originally Posted by RedCowboy View Post
Looks like a heat fracture. Did it give out while running or when you first turned it on after having the lens out?
When I looked at the burned spot on my NUBM44 it had a fracture in the window too. I bought mine 2nd hand from another member here and saw a problem with the beam when I first turned it on.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
.........................
PhotoB****t high jacking you too? Use this link instead:
http://imgbb.com

High resolution of my avatar: https://ibb.co/fWOhXF

Last edited by Alaskan; 07-16-2015 at 02:36 AM.
Alaskan is offline   Reply With Quote
Old 07-16-2015, 04:15 AM #265
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

[QUOTE=Alaskan;1369632]The thought occurred to me to try to break the glass window on my NUBM44, but it is so close to the diode inside I fear I would easily damage it, I guess you got away with it but I bet you are lucky, most would just kill the diode doing that, I think.

I thought DTR was going to decan it for you? He has a tool made for just that.

Last edited by RedCowboy; 07-16-2015 at 04:20 AM.
RedCowboy is online now   Reply With Quote
Old 07-16-2015, 04:35 AM #266
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,070
Rep Power: 47613
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,070
Rep Power: 47613
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

I was going to try to do it myself, just don't have the tools delivered in the mail yet to pop it out of the copper head it is in.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
.........................
PhotoB****t high jacking you too? Use this link instead:
http://imgbb.com

High resolution of my avatar: https://ibb.co/fWOhXF
Alaskan is offline   Reply With Quote
Old 07-16-2015, 07:50 PM #267
Pman's Avatar
Class 3B Laser
 
Join Date: Nov 2012
Location: Rochester, NY
Posts: 4,373
Rep Power: 12127
Pman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond repute
Pman Pman is offline
Class 3B Laser
Pman's Avatar
 
Join Date: Nov 2012
Location: Rochester, NY
Posts: 4,373
Rep Power: 12127
Pman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Great investment is the entire set of presses and the diode extractor. I realize people look at it and think "I could buy a nice diode for that price but like all the other meters, soldering and tools there's nothing so nice as owning quality equipment to work with.
I can certainly understand the heat/humidity as a factor but unless something has changed in the manufacturing process I would have expected to see this issue being a live wire for quite some time as some of these diodes have been out long enough for this to rear it's ugly head.
Have any of the diode exchanges been tested yet?
__________________
I'm not strange, I'm limited edition!

*Jayrob Star Trek Phaser*
# of Lasers - ***
# of DTR/510 laser adapters *
# of eGo/510 mods **
# of Batteries - ***
Wavelengths - 405, 445, 447, 450, 455, 462, 464, 470, 473, 473+, <515, 515, 520, 532, 589, 635, 638, 650, 660, 685, 808, 830, 980
Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
Phlatlights - Jayrob PT-54 green 1000lm maglight, PT-54 red project box build, (3) PT-54 red, (2) PT-54 orange (3) PT-121 red, (2) PT-121 blue, (1) PT-121 green project work in progress 5000lm (1) PT-121 green

Links:

**"Pen Laser Thread"**
"Post your pics of unique builds no-one else has"
"Make your way overspec $5 pen focusable"
"Share your inexpensive builds thread"
"Pman special"
Pman is offline   Reply With Quote
Old 07-17-2015, 09:29 PM #268
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Quote:
Originally Posted by Pman View Post
Great investment is the entire set of presses and the diode extractor. I realize people look at it and think "I could buy a nice diode for that price but like all the other meters, soldering and tools there's nothing so nice as owning quality equipment to work with.
I can certainly understand the heat/humidity as a factor but unless something has changed in the manufacturing process I would have expected to see this issue being a live wire for quite some time as some of these diodes have been out long enough for this to rear it's ugly head.
Have any of the diode exchanges been tested yet?
---edit---
It's a year later and I have half a dozen nubm44's working now and working well so it appears that I contaminated the window of that original diode, I would still avoid unnecessary thermal shock but after half a dozen more NUBM44's I have had no problems with windows.
It's a matter of user error in any case, we have to keep our diodes clean and dry, especially as the power level goes up.

Last edited by RedCowboy; 07-25-2016 at 06:59 PM.
RedCowboy is online now   Reply With Quote
Old 07-18-2015, 03:39 AM #269
starlight's Avatar
Class 2M Laser
 
Join Date: Mar 2009
Location: Brighton,MI
Posts: 928
Rep Power: 278
starlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond repute
starlight starlight is offline
Class 2M Laser
starlight's Avatar
 
Join Date: Mar 2009
Location: Brighton,MI
Posts: 928
Rep Power: 278
starlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond reputestarlight has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Re tested mine tonight. I finally got the chance to move my diode from the copper 12mm module and into one of DTR's XYZ heatsinks. The diode seems to sit steady right above 7 watts for the 3 tests I did. All the tests we're about 45 seconds.

Did a quick video of last test. I get over 7W using 4.5A

__________________
Lasers:
405nm E-bay 303 host (peak 113mW) 13% IR dead
405nm Ehgemus host 900mW (peak 635mW 3E lens) had 2 both died in first minute
450nm home made labby NUBM44 6w (peak 7.2w)
445nm Ehgemus RPL host 3W (peak 3.5W)
445nm home made labby 3W (peak 3.1W)
445nm 501b by Blord 2.5W (peak 2.7W)
447nm Dragon Lasers Spartan 1W (peak 1.3W)
520nm custom Ehgemus host NDG7475 1W (peak 1.5W)
520nm Ehgemus host PL520-B1 120mW (peak 143mW)
532nm labby 500mW (peak 630mW)
532nm Dragon Lasers Viper 75mW (peak 122mW)
532nm C6 host (peak 103mW)
532nm E-Bay 303 host 200mW (peak 95mW) 15% IR
589nm Dragon Lasers Spartan 50mW (peak 115mW)
650nm C6 host (peak 153mW)
650nm E-Bay 303 host 200mW (peak 141mW) 75% IR
650nm DVD diode Mini Mag host 54mW (my first build)
650nm dollar store mini pen 5mW X2

808nm Wicked Lasers E2 400mW (peak 598mW)

Expanders & Googles etc:
Dragon Lasers 10x Beam Expander
Dragon Lasers "new" 2x Beam Expander
Dragon Lasers DGTBF
Dragon Lasers LSG02 goggles 190-548nm
Eagle Pair SL-BLG2 goggles 190-540nm

LPM:
nospin Ophir 20c-A-1-Y MrCrouse full wrap heatsinked

Flashlights:
Fenix tk61vn

Last edited by starlight; 07-18-2015 at 11:04 AM.
starlight is offline   Reply With Quote
Old 07-18-2015, 05:24 AM #270
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
planters planters is offline
Class 2 Laser
 
Join Date: Jun 2010
Location: New Hampshire
Posts: 286
Rep Power: 1167
planters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond reputeplanters has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

I got back from a trip this afternoon and DTRs diode had arrived. He also sent his mount and heat sink. These are nice quality and were easy to work with. The lens he sent, I am guessing is a G2 in a 9x 0.5 barrel. I added a small amount of PTFE tape to stabilize the focus and set it up. The bad news is the video I did was with a bad diode. The good news is the diode he sent performs as I had hoped and like most of the other testers have measured. At 600mA I was already getting 600mW. By 1,100mA, I saw 1,500mW. At 2,000mA the diode was producing 3,200mW. The maximum power was 7,100mW at 5,100mA. After this, the power began to drop with additional current.

The beam was better as well. With a 5x cylinder pair the beam at 30cm from the collimator was 7mm high and 3mm wide and at 14M the beam was 16mm high and 6mm wide.

As I posted above, my power meter is very similar to DTR's or around 5% conservative. In addition, I examined the lens he sent and it was pretty clean but, not perfect. It was in about the same condition as the G-9 that I installed for the first test.

The high power is a great finding, but the better beam is more important to me. Three of these could be knife edged to produce a 7x9mm beam with 20W of power and a PBS would allow you to produce the same beam with 40 watts!

Nice.
planters is offline   Reply With Quote
Old 07-18-2015, 05:38 AM #271
DTR's Avatar
DTR DTR is online now
Class 4 Laser
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
DTR DTR is online now
Class 4 Laser
DTR's Avatar
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Great results on the retest and sounds like good news on possibly getting a useable beam out of the diode as well.

Glad you liked the XYZ mount. They really are very efficient at managing heat and this diode really seems to work very well in the mount. Looks like starlight's video above showed a radical improvement when mounted in the XYZ unit over his test with the diode just in a copper module in a small finned heatsink.

Last edited by DTR; 07-18-2015 at 05:39 AM.
DTR is online now   Reply With Quote
Old 07-18-2015, 10:46 AM #272
Pman's Avatar
Class 3B Laser
 
Join Date: Nov 2012
Location: Rochester, NY
Posts: 4,373
Rep Power: 12127
Pman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond repute
Pman Pman is offline
Class 3B Laser
Pman's Avatar
 
Join Date: Nov 2012
Location: Rochester, NY
Posts: 4,373
Rep Power: 12127
Pman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond reputePman has a reputation beyond repute
Default Re: NUBM44 6W+ 450nm Laser Diode

Now that is great news! Not only is DTR's LPM working fine but his mounts are really good and at least some diodes will hit 7W+ when pushed.
DTR have you tested thsee diodes with that heat-sink that was made for Mohs XML T-6 vs. the same heat-sink that has a regular 12mm module hole? For those who don't know it looks like this:

From what Starlight saw that sink should work pretty well if someone is looking for a handheld for it. If members are interested an all copper one would be a great option and that host can take 26650 cells.
__________________
I'm not strange, I'm limited edition!

*Jayrob Star Trek Phaser*
# of Lasers - ***
# of DTR/510 laser adapters *
# of eGo/510 mods **
# of Batteries - ***
Wavelengths - 405, 445, 447, 450, 455, 462, 464, 470, 473, 473+, <515, 515, 520, 532, 589, 635, 638, 650, 660, 685, 808, 830, 980
Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
Phlatlights - Jayrob PT-54 green 1000lm maglight, PT-54 red project box build, (3) PT-54 red, (2) PT-54 orange (3) PT-121 red, (2) PT-121 blue, (1) PT-121 green project work in progress 5000lm (1) PT-121 green

Links:

**"Pen Laser Thread"**
"Post your pics of unique builds no-one else has"
"Make your way overspec $5 pen focusable"
"Share your inexpensive builds thread"
"Pman special"

Last edited by Pman; 07-18-2015 at 11:06 AM.
Pman is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f65/nubm44-6w-450nm-laser-diode-94119.html
Posted By For Type Date
CNC Control - que lente buena para el laser? This thread Refback 08-10-2017 03:00 PM
???????? ?????? ?? ?????????? ? ?????? ? ??? ?? ?????? cnc-club.ru This thread Refback 02-14-2017 09:06 AM
?????-???????? : ???? NUBM44 This thread Refback 01-04-2017 09:06 AM
?????? This thread Refback 12-16-2016 09:46 AM
CNC build and use notes | Cavalcade of Mammals This thread Refback 05-06-2016 11:55 PM
nubm44 nichia - ??????? This thread Refback 02-10-2016 05:52 AM
nubm44- nichia - ??????? This thread Refback 02-09-2016 12:03 AM
Fingers elektrische Welt ? Thema anzeigen - Interessante und kuriose technische Bilder This thread Refback 12-21-2015 06:49 PM
New Diode This thread Refback 06-22-2015 10:22 PM










Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:24 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC