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Old 05-29-2014, 11:07 PM #1
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Default 462nm NDB7675 Handheld

Finally, I got my hands on this rare-ish Blue laser diode. This is the Nichia NDB7675 462nm Laser diode at about 1.5-1.9 watts(not sure, still don't have a lpm)

Once I received the diode in the mail I immediately fired it up at about .15 amps and I already could tell this blue is much brighter and more pure than a 445nm.
M140 on left, NDB7675 on right


Next I had the laser going at 1.8amps which is what x-drive is set as. Time to put it in a host! Since I may never get another diode like this I'm using my best c6 copper heat sink for maximum heat transfer, and don't worry about stainless steel trapping in the heat, I respect the duty cycle that is given.



Here's the fun part


The color difference is much more noticeable in person, I tried using several different cameras to get a decent photo to contrast the dots. The 462nm is on the left this time and the other is of course your typical 445nm.

The color really contrasts when you only look at the beams, but the camera doesn't do much of a job of telling the difference like the human eye.




Conclusion
I really like this diode Its makes a very nice blue at a very high power, This is a keeper for sure. Hopefully Nichia releases some 473nm diode on the market at this power but you may never know, it may happen very soon. Thanks for viewing.


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462nm 1.8w NDB7675
462nm 2.1w ehgemus host
515nm 30mw C6 from Aixiz
520nm 90mw Stainless Steel C6
520nm 200mw+ Polished C6
532nm 50mw Karlsson Robotics Module
532nm 55mw DL Viper (does 77mW)
635nm 500mw Mits Diode in C6 (Driver and diode died, will build a new one later)

Last edited by Nprlaser; 05-30-2014 at 12:00 AM. Reason: Nvm this is the first handheld with 462nm diode lol, its too hard to determine
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Old 05-29-2014, 11:48 PM #2
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Default Re: World's first documented 462nm NDB7675 Handheld?

very nice i want one
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Old 05-29-2014, 11:48 PM #3
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Default Re: World's first documented 462nm NDB7675 Handheld?

I finished my build last night. I can vouch the difference is far greater in person. Amazing color.

Whats your current @?
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Last edited by Down with Umbrella; 05-29-2014 at 11:51 PM.
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Old 05-30-2014, 12:00 AM #4
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Default Re: World's first documented 462nm NDB7675 Handheld?

Quote:
Originally Posted by Down with Umbrella View Post
I finished my build last night. I can vouch the difference is far greater in person. Amazing color.

Whats your current @?
1.8 amps
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462nm 1.8w NDB7675
462nm 2.1w ehgemus host
515nm 30mw C6 from Aixiz
520nm 90mw Stainless Steel C6
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635nm 500mw Mits Diode in C6 (Driver and diode died, will build a new one later)
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Old 05-30-2014, 10:50 PM #5
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Default Re: 462nm NDB7675 Handheld

Today was payday Time to grab one of these, and get started on my DPSS project (unrelated to the 462nm diode)

I am not usually this excited for a diode, but I have wanted this WL for several years now!
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Old 05-30-2014, 11:50 PM #6
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Default Re: 462nm NDB7675 Handheld

I paid for one this morning. It took a lot of gritting my teeth to hit the pay invoice button.
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