Another Blu-Ray power, I-V measurement set

[cdanjo]

Hi all,
 I just did this characterization on my Nichia Blu-Ray diode from a KES-400A that I got from Daedal.  The power measurement was done with a Scientech laser calorimeter that I confirmed by calibration procedure.  Wow, this violet LD puts out up to 30mW!  I was scared to push it to 50mA because it worked well enough at 45mA for me.  I'm happy with >20mW out.  I didn't know how hard to push the red LD, by the efficiency flattened out, so I figured it was time to stop.
I hope to have my circuit constructed and tested for a very cool touch-switch violet/red laser pointer by next weekend. I will share all the info with the kind folks here once I get it all together.

-colin

 

[Switch]

What kind of red LD is that?

 

[Gazoo]

The bluray diode also contains a red and infrared diode. They are stacked. More info. can be found here:

http://www.fineartradiography.com/hobbies/lasers/blu-ray/diode.html

 

[Jayls5]

I hope to have my circuit constructed and tested for a very cool touch-switch violet/red laser pointer by next weekend. I will share all the info with the kind folks here once I get it all together.

-colin

My friend and I already built one ;D

Works great.

 

[Switch]

[quote author=cdanjo link=1199823665/0#0 date=1199823648]
 I hope to have my circuit constructed and tested for a very cool touch-switch violet/red laser pointer by next weekend.  I will share all the info with the kind folks here once I get it all together.

-colin

My friend and I already built one  ;D

Works great.[/quote]

Wanna share that with us? ;D

 

[Jayls5]

Well I'm fresh out of blu-ray diodes right now. I'm using one of the ones that turned into a LED for the time being. It's weird to see it switch between a working red laser and then a smaller violet LED dot, but at least we know it works