Old 07-20-2015, 02:08 AM #1
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
7h3l4s7 7h3l4s7 is offline
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
Default General Knowledge Check and Questions Before I Buy/DIY my First Laser

Hello all,
First off I'd just like to say I'm new to lasers and this site, so if I do something wrong or break a rule I don't know, I apologize in advance. Second of all, I'd just like to thank all of you for your help in advance, both for the help here and the countless threads I've read recently to try and understand more about lasers.

I'm thinking that for my first laser I would like a 100mw green laser, under $60 if possible. I found Sci-Fi Lasers, run by thejoker301, which seems to get rave reviews from everyone here. He sells a 100mw green in my price range, but it is out of stock. I've tried to contact him through his website and PM here but I have not received a response, so I sent him an email. Hopefully he responds to that. I also researched how to build a DIY laser and am interested in that, as I could build the laser I want for around my price range.

Anyways, on to my knowledge check. Here I will post my understanding of the different parts of lasers, ask questions about what I don't understand, and post my thoughts on what I'm currently planning to do.

Safety
Lasers are dangerous, and can seriously damage your eyes. They are not like normal lights because all of the photons are focused into one beam instead of being spread out. To protect your eyes (retinas) in case the laser strikes your eye, there are laser glasses. Laser glasses typically protect your eye from a specific wavelength (color) of laser best. They have an OD rating level. The OD level corresponds to how much light it lets in from a specific wavelength. Each level lets in 1/10th of the light of the level before it. OD4+ goggles are acceptable for 100mw or less lasers (which is what I will be buying/making.)
I need a pair of laser safety glasses for my first lasers. Which one of the following will protect my eyes for the least amount of money?Also, don't point lasers at airplanes, that's just a stupid thing to do for a multitude of reasons.

Parts of a Laser/DIY
Here are, to my understanding, all the parts needed to build a laser, their functions, and where to get them.
Diode
This is the part of the laser that emits light. It can emit light with different strengths (measured in milliwatts) and colors (measured in nanometers, for wavelength). Green diodes (DPSS) work very different from red diodes. The light emitted straight from the diode isn't collimated yet. Generally standard diodes are pretty cheap, but can become expensive depending on your need. Diodes don't do well with heat. They also suck up all the energy they can get, which can cause them to burn out. There are two general sizes of diodes, 5.6mm and 9mm, the latter being used for higher powered diodes. Diodes can be found in many places, including ebay.
Driver
As mentioned, diodes are power hungry, and can pull too much power and burn themselves out. Thus, a diode needs a constant source of current, which is not a battery. A driver is a circuit that connects to the battery and the diode, and supplies the diode with a constant current that will not burn it out. Not all drivers work with all diodes, as diodes have different current and voltage needs that not all drivers can supply. You can easily build your own driver. rkcstr's and DrLava's drives seemed to be the best before, but I'm not sure they're still around here. You can also buy drives from places like survivallaser, budget beams, or DTR's shop. Smaller drivers go in a a metal housing called a driver pill, though I'm not sure why. Sometimes they're also included with a diode when you purchase it.
Module
Modules are metal, circular, elongated housings for diodes, and sometimes the driver too. AixiZ makes the best modules, which are usually 12mm in diameter. Sometimes diodes already come in the module. If not, the diode has to be pressed into the module, which is easy to do incorrectly.
Lens
The light coming directly from the diode is not focused. Lenses are used to focus the beam at a certain place, and can be adjustable. Collimation makes the edges of the beam parallel so it's focus is at infinity. Are lenses included with a diode&module&driver kit? I'm not sure where a good place to get lenses is. Perhaps DTR's shop?
Heatsink
Diodes don't do well in heat, so when they are enclosed in a laser pointer, they need a heat sink to draw heat away from them so they can stay cool. A heat sink is just a metal housing that goes around the module. You can get these from survivallaser.
Host
The laser host is the container for all of the internal laser parts and the battery. It is the actual outside part of the laser that you see and hold. As long as it's big enough, design for these can be whatever someone wants. Great kits come from survivallaser and budgetbeam.

If I don't get a response from SciFi lasers, I'm planning on building a laser myself (partly). Browsing ebay, I found a couple 532nm 100mw laser diodes, which include a module and driver. The one I'm looking at in particular is here. I have a few questions though- Can I trust that this is 100mw? Will the included driver work for it? Is there an acceptable lens included with it? If not, where can I get an acceptable, adjustable focus lens that will work for it? Also, I'm looking at the DIY C6 (here) and the DIY WF-501B (here) Host Assemblies from SurvivalLasers. Will both work for the diode&module&driver I linked to? Is one suggested over the other? Will this be all I need to make a laser?

That's all I have to ask, sorry if it's a lot! Thanks again for any help I receive


__________________
Working on buying my first!

Last edited by 7h3l4s7; 07-20-2015 at 02:23 AM. Reason: Forgot to include DTR's shop as a good source
7h3l4s7 is offline   Reply With Quote


















Old 07-20-2015, 04:16 AM #2
Peche's Avatar
Junior Member
 
Join Date: Jul 2015
Location: Santiago - Chile
Posts: 17
Rep Power: 0
Peche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to all
Peche Peche is offline
Junior Member
Peche's Avatar
 
Join Date: Jul 2015
Location: Santiago - Chile
Posts: 17
Rep Power: 0
Peche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to all
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Hello and welcome to the forum!
I'm new around here but i can answer a couple of your questions.

First people usually introduce themselves in the Welcome forum and tell a little about why are them interested in the hobby. You already said that you wanted to make a 100mW green handheld so that you skipped the intro shouldn't be a big problem.

About the safety glasses the Eagle Pair are a safe bet in terms of safety but arent the cheapest option. About the lenses just as you said DTR's shop is a good place to get them.

I can't really help you with the other questions but if you edit your profile and add more info, for example your country/city it will be easier for other members to help you.
Peche is offline   Reply With Quote
Old 07-20-2015, 05:25 AM #3
Mohrenberg's Avatar
Class 4 Laser
 
Join Date: Aug 2008
Location: Green Ridge,MO USA
Posts: 6,927
Rep Power: 4433
Mohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond repute
Send a message via Skype™ to Mohrenberg
Mohrenberg Mohrenberg is offline
Class 4 Laser
Mohrenberg's Avatar
 
Join Date: Aug 2008
Location: Green Ridge,MO USA
Posts: 6,927
Rep Power: 4433
Mohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond repute
Send a message via Skype™ to Mohrenberg
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

If you're going to use the dpss module listed in that link, then all you really need is a single lithium battery to power it.
It should already have the lense installed and ready to go.
You just need a host and heatsink to make it look pretty...

As far as power, I don't know who sells it so the only way to know, is to measure it.
If the module doesn't have an IR filter you'll get an inaccurate reading as it's going to read the IR light as well as the green light.

That module plus a host/heatsink will work well.
I have a similar module inside a wf501b host that uses a single 16340 battery. Work great.

I have it unfocused into a giant circle that I use to find coyotes in the field.
Mohrenberg is offline   Reply With Quote
Old 07-20-2015, 05:26 AM #4
Mohrenberg's Avatar
Class 4 Laser
 
Join Date: Aug 2008
Location: Green Ridge,MO USA
Posts: 6,927
Rep Power: 4433
Mohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond repute
Send a message via Skype™ to Mohrenberg
Mohrenberg Mohrenberg is offline
Class 4 Laser
Mohrenberg's Avatar
 
Join Date: Aug 2008
Location: Green Ridge,MO USA
Posts: 6,927
Rep Power: 4433
Mohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond reputeMohrenberg has a reputation beyond repute
Send a message via Skype™ to Mohrenberg
Default

Also, those modules are generally case positive. (Battery negative goes against that spring)
And those drivers usually die if you put the battery in backwards, so be careful.
Mohrenberg is offline   Reply With Quote
Old 07-20-2015, 09:18 PM #5
Trendkilla254's Avatar
Dark Lord of the Sith
 
Join Date: Mar 2015
Location: Troy, Texas
Posts: 874
Rep Power: 18291
Trendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond repute
Send a message via Skype™ to Trendkilla254
Trendkilla254 Trendkilla254 is offline
Dark Lord of the Sith
Trendkilla254's Avatar
 
Join Date: Mar 2015
Location: Troy, Texas
Posts: 874
Rep Power: 18291
Trendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond reputeTrendkilla254 has a reputation beyond repute
Send a message via Skype™ to Trendkilla254
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Honestly, This seems to be alot better than many other first posts I have seen. Welcome to the forums. +rep for actually appearing to have read stuff.
__________________
New to Lasers? Click Here! THIS is the thread that answers all your "Where can I..." "Is this..." "How do I..."
Laser Safety
Eye Safety First:Uvex S1933X Skyper Safety Eyewear, Black Frame, SCT-Orange UV Extreme Anti-Fog Lens
"5mw"* 405nm Gearbest Pointer - Highly Unlikely to be 5mw
5mw 445nm Custom Pointer in a former Cordless Drill "Gun Style" Host - proof of concept before going into Nerf Gun
5mw ~515nm Bladed LightSaber Osram pl515 with "Growing Blade" Video attached (Host by Ehgemus)
5mw 532nm Pointer Broken? After months of no use it works now... can't explain.
5mw 685nm from 10fenny in Pen Host - Link - Broke Driver taking it apart
Graveyard
0mw 450nm Osram PL-450 RIP 11/25/2015
Two Laserlands 5mw 445nm Pens

Communication methods: Xbox Live\Skype\Steam\Gmail\Google Plus\Youtube - Trendkilla254
Trendkilla254 is offline   Reply With Quote
Old 07-20-2015, 09:25 PM #6
Hap's Avatar
Hap Hap is online now
Super Moderator
 
Join Date: Sep 2013
Location: Morro Bay, CA, USA
Posts: 8,175
Rep Power: 1019106
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Hap Hap is online now
Super Moderator
Hap's Avatar
 
Join Date: Sep 2013
Location: Morro Bay, CA, USA
Posts: 8,175
Rep Power: 1019106
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Quote:
Originally Posted by Trendkilla254 View Post
Honestly, This seems to be alot better than many other first posts I have seen. Welcome to the forums. +rep for actually appearing to have read stuff.
Lol, true dat

-Alex
__________________
635nm: Laserglow Libra 5mW *North Pole Edition*



"Open your eyes, look within. Are you satisfied with the life you're living?" -Bob Marley
"The stars should fall and the earth be riddled, imagine all your problems be seem so little, funny how the world so brittle." -Tribal Seeds
“The universe is a pretty big place. If it's just us, seems like an awful waste of space.” -Carl Sagan
You are important: Pale Blue Dot

Hap is online now   Reply With Quote
Old 07-20-2015, 09:52 PM #7
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
7h3l4s7 7h3l4s7 is offline
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Quote:
Originally Posted by Peche View Post
Hello and welcome to the forum!
I'm new around here but i can answer a couple of your questions.

First people usually introduce themselves in the Welcome forum and tell a little about why are them interested in the hobby. You already said that you wanted to make a 100mW green handheld so that you skipped the intro shouldn't be a big problem.

About the safety glasses the Eagle Pair are a safe bet in terms of safety but arent the cheapest option. About the lenses just as you said DTR's shop is a good place to get them.

I can't really help you with the other questions but if you edit your profile and add more info, for example your country/city it will be easier for other members to help you.
Okay, thank you for the advice Peche. I'm curious though- how does adding my city/country enable more members to help me?
__________________
Working on buying my first!
7h3l4s7 is offline   Reply With Quote
Old 07-20-2015, 10:07 PM #8
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
7h3l4s7 7h3l4s7 is offline
Junior Member
 
Join Date: Jul 2015
Location: US
Posts: 3
Rep Power: 0
7h3l4s7 is on a distinguished road
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Quote:
If you're going to use the dpss module listed in that link, then all you really need is a single lithium battery to power it.
It should already have the lense installed and ready to go.
You just need a host and heatsink to make it look pretty...

As far as power, I don't know who sells it so the only way to know, is to measure it.
If the module doesn't have an IR filter you'll get an inaccurate reading as it's going to read the IR light as well as the green light.

That module plus a host/heatsink will work well.
I have a similar module inside a wf501b host that uses a single 16340 battery. Work great.

I have it unfocused into a giant circle that I use to find coyotes in the field.
Okay, thanks for the help. I'll be getting an 18650 or 16340 for the battery. I think I might bump up to the 150mw or 200mw version that this same seller has just to be more sure that it's 100mw, since I don't have an LPM to check it.

Quote:
Also, those modules are generally case positive. (Battery negative goes against that spring)
And those drivers usually die if you put the battery in backwards, so be careful.
And thanks for the reminder, don't want to burn out my first laser before it's even complete!

Quote:
Honestly, This seems to be alot better than many other first posts I have seen. Welcome to the forums. +rep for actually appearing to have read stuff.
Thanks I come from other hobbies where it's important to teach yourself what you can before you ask for help.
__________________
Working on buying my first!

Last edited by 7h3l4s7; 07-20-2015 at 10:12 PM. Reason: Quoting
7h3l4s7 is offline   Reply With Quote
Old 07-20-2015, 10:47 PM #9
Peche's Avatar
Junior Member
 
Join Date: Jul 2015
Location: Santiago - Chile
Posts: 17
Rep Power: 0
Peche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to all
Peche Peche is offline
Junior Member
Peche's Avatar
 
Join Date: Jul 2015
Location: Santiago - Chile
Posts: 17
Rep Power: 0
Peche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to allPeche is a name known to all
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Quote:
Originally Posted by 7h3l4s7 View Post
Okay, thank you for the advice Peche. I'm curious though- how does adding my city/country enable more members to help me?
Mainly because it's hard to suggest places to buy pieces when people don't know if the store ships to your country/city. When it comes to prices your country/city is important because you can save some buying from a local store to avoid the shipping expenses.
Peche is offline   Reply With Quote
Old 07-20-2015, 11:47 PM #10
Junior Member
 
Join Date: Jul 2015
Posts: 12
Rep Power: 0
pieconey is on a distinguished road
pieconey pieconey is offline
Junior Member
 
Join Date: Jul 2015
Posts: 12
Rep Power: 0
pieconey is on a distinguished road
Default

Quote:
Originally Posted by LeHap View Post
Lol, true dat

-Alex
Guilty of posting before learning. Sorry.
pieconey is offline   Reply With Quote
Old 10-22-2016, 11:08 AM #11
Junior Member
 
Join Date: Oct 2016
Posts: 1
Rep Power: 0
stockanalyze424 is on a distinguished road
stockanalyze424 stockanalyze424 is offline
Junior Member
 
Join Date: Oct 2016
Posts: 1
Rep Power: 0
stockanalyze424 is on a distinguished road
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Thanks 7h3l4s7. Great guide.
stockanalyze424 is offline   Reply With Quote
Old 10-22-2016, 08:59 PM #12
Sta's Avatar
Sta Sta is online now
Class 3R Laser
 
Join Date: Jan 2014
Location: New Jersey, USA
Posts: 1,689
Rep Power: 225899
Sta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond repute
Sta Sta is online now
Class 3R Laser
Sta's Avatar
 
Join Date: Jan 2014
Location: New Jersey, USA
Posts: 1,689
Rep Power: 225899
Sta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond reputeSta has a reputation beyond repute
Default Re: General Knowledge Check and Questions Before I Buy/DIY my First Laser

Quote:
Originally Posted by stockanalyze424 View Post
Thanks 7h3l4s7. Great guide.
<not sure if spammer or misguided>
You should not have bumped a thread as old as this one... necroposting is frowned upon.
</not sure if spammer or misguided>
__________________

403nm BTB LP405-5
405nm "5mW" eBay pen, 50mW 'bottle' pointer, 450mW pen
445nm 7W NUBM44 lightsaber build
450nm 2W SF501B, 10mW pointer, 50mW lmlaser
453nm 100mW LaserBTB HL
455nm 1.6W Arcane
457.9nm Argon
470nm 07E S4X build
473nm 100mW PL-E Pro, Aquarius-2
476.5nm Argon
478nm Stainless Steel build
488nm Argon
495nm Lifetime17 copper build
496.5nm Argon
501.7nm Argon
513nm 50mW Thor
514.5nm Argon
515nm 200mW 501B
522nm 1.4W S4X build
532nm 500mW XPL, gearbest, 9-line 301, 35mW pen, Anser-5
537nm
542nm
543.5nm Gammex HeNe
547nm
561nm 50mW PGL-III-C
583.8nm Spartan primary cold line
586.2nm
589nm 120mW PGL-III-C, DL Spartan (7+ lines) 177mW pk!
591nm
593.5nm Rigel-6, badboybilly 593.5nm 25mW
594.1nm LHOR-0150M HeNe
604nm HeNe
609nm HeNe
612nm HeNe
632.8nm 10mW JDSU HeNe, 10mW Lasos HeNe
635nm 90mW DL Spartan, LG Libra
638nm 600mW XPL-310
655nm BTB LP650-5
660nm 200mW (3x), "5mW" eBay pen
690nm 15mW module





YouTube - Starmute VII!
Sta is online now   Reply With Quote
Reply

Tags
diy, green 532nm laser, learning, noob, sci fi lasers





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: https://laserpointerforums.com/f44/general-knowledge-check-questions-before-i-buy-diy-my-first-laser-94430.html
Posted By For Type Date
Buying high(er)-power lasers : lasers This thread Refback 08-08-2015 05:01 PM
























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 11:17 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC