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 06-20-2010, 08:49 PM #17
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
krazer krazer is offline
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Hi all, I am the owner of the website linked in the first post.

Upon closer inspection of my initial measurements, I did make a computational error and have since corrected it on my website. In the projector the diodes are run at 1.7W for 3.2ms, followed by a brief pulse of 1.4W for 1.3ms, followed by on off period at ~20ma for 3.8ms. I believe the 1.7W pulse corresponds to the period while the projector is making green light using the phosphor wheel, the 1.4W pulse is when the diodes are being used to make blue light directly, and the 3.8ms off period is obviously when the red LED is on.

Furthermore, I have concluded 2A is NOT safe current to run the diode at if you want it to last more than a few hours. So far my test at 2A of current has caused the diode power to drop 15% in the last 20 hours, and now it is back at the same power as running at 1.5A. So if you want your diode to live for more than 10 hours best keep current below 1.5A!

To those who are wondering, the diodes I am testing are from an A140 projector. If someone would like to send me a diode from an A130 projector I would be happy to put it through the same tests to see how different they really are.


krazer is offline   Reply With Quote







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







Old 06-20-2010, 08:54 PM #18
ossumguywill's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
ossumguywill ossumguywill is offline
Class 3R Laser
ossumguywill's Avatar
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
Default Re: Testing at High Currents in Motion

good to know krazer. I wonder why they didn't just use a phosphor wheel to make the red too?
ossumguywill is offline   Reply With Quote
Old 06-20-2010, 09:10 PM #19
Class 1 Laser
 
Join Date: May 2010
Posts: 50
Rep Power: 8
Uberstrobe is on a distinguished road
Uberstrobe Uberstrobe is offline
Class 1 Laser
 
Join Date: May 2010
Posts: 50
Rep Power: 8
Uberstrobe is on a distinguished road
Default Re: Testing at High Currents in Motion

Good to see another member hailing from 4hv.

... has a very good reputation.

I still have that 200mW 808nm diode and the ZVS driver you put into the migratory box. :P
Uberstrobe is offline   Reply With Quote
Old 06-20-2010, 09:32 PM #20
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Krazer, good to hear from you! We all appreciate your willingness to put these things through some harder paces. It sounds like 2A is a good way to degrade the things.

I wonder why it didn't simply go by COD at such a high current?

Have they really improved the facets that much??
Meatball is offline   Reply With Quote
Old 06-20-2010, 10:42 PM #21
jmgallego's Avatar
Class 2 Laser
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
jmgallego jmgallego is offline
Class 2 Laser
jmgallego's Avatar
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Hey krazer,

Welcome!!

I been following your experiment closely, very intersting

Jose
__________________
Building Laser Pointers Using the 445nm Laser Diodes
Diode Lasers:
405nm: 15 and 35mW built, PHR 405nm, 100mW, Dagin's Dorcy built ~200mW
445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
635/650nm: 200mW, and several builds
Gas Lasers:
337nm: Nitrogen (N2) laser, 3mW, 175uJ/pulse, peak @ 30kW and a 6mW, 260uJ/pulse, peak @ 75kW
632nm: Melles Griot HeNe, 0.5, 1. 0 5 0 and 15. 0mW
Dye Laser(s):

380-~1000nm: Different laser dyes, different wavelenghts, different laser powers.

Crystal Laser:
Holmium YAG (Ho:YAG) laser, 2.1 μm, 53W

Assorted laser accessories, including LPM, optics, and a holography table.

Last edited by jmgallego; 06-20-2010 at 10:47 PM. Reason: Removed redundant question :^)
jmgallego is offline   Reply With Quote
Old 06-21-2010, 06:34 AM #22
pullbangdead's Avatar
Class 3R Laser
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
pullbangdead pullbangdead is offline
Class 3R Laser
pullbangdead's Avatar
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Quote:
Originally Posted by Meatball View Post
Krazer, good to hear from you! We all appreciate your willingness to put these things through some harder paces. It sounds like 2A is a good way to degrade the things.

I wonder why it didn't simply go by COD at such a high current?

Have they really improved the facets that much??
COD is about optical power density at the facet...these lasers, being multi-mode like they are, likely have a larger cross-section at the facet, so the larger power may spread over a larger area on the facet, giving a lower power density at any given point. It has been shown that by increasing the size of the mode in the laser, ie lowering the light confinement, you lose some efficiency because the light isn't as "concentrated" in the active region, but you can gain overall output power because you're lowering power density at the facet, increasing the total optical power output at which COD occurs.

That, and yes, facets are improving all the time.

Last edited by pullbangdead; 06-21-2010 at 06:36 AM.
pullbangdead is offline   Reply With Quote
Old 06-21-2010, 07:06 PM #23
ossumguywill's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
ossumguywill ossumguywill is offline
Class 3R Laser
ossumguywill's Avatar
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
Default Re: Testing at High Currents in Motion

Isn't the facet just the partially mirrored surface on the business end of the diode? And how do you increase the size of the mode, I though the mode referred to the reflective patterns generated by the resonance cavity and its respective shapes at different temperatures?
ossumguywill is offline   Reply With Quote
Old 06-21-2010, 11:52 PM #24
pullbangdead's Avatar
Class 3R Laser
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
pullbangdead pullbangdead is offline
Class 3R Laser
pullbangdead's Avatar
 
Join Date: Aug 2007
Posts: 2,045
Rep Power: 238
pullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond reputepullbangdead has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Quote:
Originally Posted by ossumguywill View Post
Isn't the facet just the partially mirrored surface on the business end of the diode? And how do you increase the size of the mode, I though the mode referred to the reflective patterns generated by the resonance cavity and its respective shapes at different temperatures?
Yes, the facet is the partially-mirrored surface at the "end" of the laser diode, one on each end. But it can be engineered. It is pretty much guaranteed that there are dielectric coatings on the facets, for several reasons. 1) protect the facet, it has been shown that lasers with uncoated facets die faster than equivalent lasers with coated facets. 2) to tailor the reflectivities. For some applications, it is advantageous to put high-reflectivity coatings on both facets of the laser. Sometimes it is advantageous to have the facets have equal high reflectivities (say for a built-in photodiode behind the diode), sometimes advantageous to have different reflectivities on each facet. For this application, which is high power, it is most likely that the back facet has a very high reflectivity and the front output facet has an anti-reflective coating on it. This insures as little light as possible goes out the back, and as much as possible comes out the front. But the mirror reflectivities are undoubtedly well-engineered using dielectric thin films.

As far as the mode, think of the volume of light contained in the cavity, the shape where there is light. It has a specific shape, defined by the waveguide that forms the cavity. The 2 ends of the waveguide (longitudinal) are the facets. The top and bottom (transverse) of the waveguide are formed by layers of materials grown epitaxially, such as cladding layers, or an SCH (separate confinement heterostructure). The sides of the waveguide (lateral) are likely to be index-guided, like if you put a different material on the sidewalls of a ridge; or they could be gain/loss-guided, in which case there's no physical guiding element.

So the shape of the mode is determined by the construction of the diode. Possible explanation for these lasers: it looks like these lasers have multiple lateral modes (the "wings" that are in the direction perpendicular to the "fast axis"), it looks as if there may be a wide lateral waveguide, which allows a wider optical mode in that direction, indeed wide enough to allow multiple modes. That change in shape allows more power over a wider area, so it increases overall power at the facet while not increasing power density at the facet (ie power per unit facet area). Since the power is spread over a wider area, there is not a small area with a high power density, which can lead to COD. But I don't know the internals of the diode, and you can't tell everything with one short look at the far-field pattern, which is all I've done, so this part is all a guess.

Last edited by pullbangdead; 06-21-2010 at 11:58 PM.
pullbangdead is offline   Reply With Quote
Old 06-22-2010, 12:30 AM #25
ossumguywill's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
ossumguywill ossumguywill is offline
Class 3R Laser
ossumguywill's Avatar
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
Default Re: Testing at High Currents in Motion

Alright, cool. I guess that makes sense.
ossumguywill is offline   Reply With Quote
Old 06-22-2010, 07:26 AM #26
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
krazer krazer is offline
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
Default Re: Testing at High Currents in Motion

To echo what has been said earlier, the reason these diodes don't just up and explode is that they have a much larger facet (no one has had a chance to measure it directly, but it is at least 10 times the area of the singlemode diodes extracted from cd-rom drives) so the power density is not nearly as high.

I am not sure exactly what the mechanism that is causing the diodes to fail is (as it turns out, failure analysis in laser diodes is tricky, who would have thought ) but the current theory is that at high currents parts of the active region are damaged and stop emitting light. This process is irreversible, but also a slow decay, as soon as you take the excessive current off the diode will never be as efficient, but when the current is reduced back to a safe level it doesn't degrade any faster than it would normally (at least for short term, <100 hour time periods I can test).

This is concluded from my tests, where running the diode at 2A caused the power to drop quite rapidly, but after allowing the diode to run at 2A for 30 hours (which caused the power to drop from 1.7 to 1.0w), the power remains constant (at 1.0W instead of 1.4W when the diode was new) when running at 1.5A. Furthermore, increasing the current past a certain point (about 1.7A for this diode) does not cause the power to rise significantly, which further suggests that the power is going into damaging the device somehow.
krazer is offline   Reply With Quote
Old 06-22-2010, 12:29 PM #27
jmgallego's Avatar
Class 2 Laser
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
jmgallego jmgallego is offline
Class 2 Laser
jmgallego's Avatar
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Krazer,

If I remember correctly, you mentioned that from a 140 projector. Is that correct?
__________________
Building Laser Pointers Using the 445nm Laser Diodes
Diode Lasers:
405nm: 15 and 35mW built, PHR 405nm, 100mW, Dagin's Dorcy built ~200mW
445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
635/650nm: 200mW, and several builds
Gas Lasers:
337nm: Nitrogen (N2) laser, 3mW, 175uJ/pulse, peak @ 30kW and a 6mW, 260uJ/pulse, peak @ 75kW
632nm: Melles Griot HeNe, 0.5, 1. 0 5 0 and 15. 0mW
Dye Laser(s):

380-~1000nm: Different laser dyes, different wavelenghts, different laser powers.

Crystal Laser:
Holmium YAG (Ho:YAG) laser, 2.1 μm, 53W

Assorted laser accessories, including LPM, optics, and a holography table.
jmgallego is offline   Reply With Quote
Old 06-22-2010, 04:17 PM #28
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
krazer krazer is offline
Junior Member
 
Join Date: Jun 2010
Posts: 7
Rep Power: 0
krazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond reputekrazer has a reputation beyond repute
Default Re: Testing at High Currents in Motion

That is correct, this is from an A-140 projector.
krazer is offline   Reply With Quote
Old 06-23-2010, 03:40 AM #29
jmgallego's Avatar
Class 2 Laser
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
jmgallego jmgallego is offline
Class 2 Laser
jmgallego's Avatar
 
Join Date: Apr 2008
Location: San Diego, CA
Posts: 369
Rep Power: 2187
jmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond reputejmgallego has a reputation beyond repute
Default Re: Testing at High Currents in Motion

Thanks...
__________________
Building Laser Pointers Using the 445nm Laser Diodes
Diode Lasers:
405nm: 15 and 35mW built, PHR 405nm, 100mW, Dagin's Dorcy built ~200mW
445nm: Built ~3W and Jayrob Built - 445nm <1W
532nm: 70mW and ~200mW
635/650nm: 200mW, and several builds
Gas Lasers:
337nm: Nitrogen (N2) laser, 3mW, 175uJ/pulse, peak @ 30kW and a 6mW, 260uJ/pulse, peak @ 75kW
632nm: Melles Griot HeNe, 0.5, 1. 0 5 0 and 15. 0mW
Dye Laser(s):

380-~1000nm: Different laser dyes, different wavelenghts, different laser powers.

Crystal Laser:
Holmium YAG (Ho:YAG) laser, 2.1 μm, 53W

Assorted laser accessories, including LPM, optics, and a holography table.
jmgallego is offline   Reply With Quote
Old 06-23-2010, 05:06 AM #30
Seoul_lasers's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,313
Rep Power: 5175
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Seoul_lasers Seoul_lasers is online now
Class 3R Laser
Seoul_lasers's Avatar
 
Join Date: Jul 2008
Location: Victoria, British Columbia
Posts: 2,313
Rep Power: 5175
Seoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond reputeSeoul_lasers has a reputation beyond repute
Send a message via Skype™ to Seoul_lasers
Default Re: Testing at High Currents in Motion

This is all quite interesting. Not only are these laser diodes capable of 1W they can be pushed given proper cooling to +2W. Amazing.
Durable little diode, indeed!
__________________
650nm ~350mW DVD 20x diode RyanSoh3 Class IIIb
650nm ~350mW DVD 22x 3.5mm labby build 2010 Class IIIb
532nm 10mW-15mW DPSS Module IR filtered(S.Korea)RyanSoh3 Class IIIb
450nm CarbonFiber ElectricPlasma build 9mm +6W Class IV
445nm 3.49W pk ~3.15W av. Sinner Cypreus II +DTR 9mm 445nm Class IV
445nm RHD Saber Twins 2.7W ~2.35W pk Class IV
445nm A140 module x2 Maxsink Class IV
405nm Daguin Kryton Groove SO6J 700mW build. Class IV
405nm Olike 560mW-600mW pen sold Scopeguy20
Class IV
337.1nm TEA Nitrogen laser project 2011 Class IIIb
---------------------------------------------------
Die4Drivers 1.3v lab laser/projector driver

Laserbee 3.2W Deluxe LPM
ARGMeter 1.1v
Ophir 20C-A sensor

Peregrine 1.5.0 is working now on MacOSX Yay!!
Seoul_lasers is online now   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/testing-high-currents-motion-51925.html
Posted By For Type Date
Синие диоды 445нм - Страница 15 - Hobbi TV This thread Refback 05-14-2013 04:46 PM
445 - 15 - Hobbi TV This thread Refback 09-14-2011 02:19 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 08:51 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