Modding this laser diode

[DJ DoubleBass]

I'll be getting this 5mw green laser diode with a driver attached in the mail any day now to experiment with:

http://cgi.ebay.com/5mW-Green-laser-...d=p4999.c0.m14

Would there be any problem removing the driver on that diode and using this "Analogue Laser Tester" instead?

http://www.photonlexicon.com/forums/...d.php?p=115439

The only thing is it's looking like this tester is designed to put out 5 Volts. If that's true then how could I mod this Analogue Laser Tester's design to put out only 3 volts?

Thanks to anyone willing to help

[Things]

No, there would not be a problem, however, since these modules are designed and built very cheaply, their stability will not be great at all. It's doable, but don't expect stability or linearity from it ..

[DJ DoubleBass]

Thanks! Very appreciated. Would I have to worry about the "Analogue Laser Tester" putting out 5 Volts when the laser diode with it's driver normally runs at 3 volts? (the tester's output is adjustable using the potentiometer...)

[chad]

Woah hang on..

That tester schematic is intended to supply 0 to 5v at low current for testing a analog input laser diode driver. It is NOT intended to be a laser driver itself. It will not supply the current to run a diode.

tester -----> Laser driver -----> laser diode

NOT

Tester -----> laser diode

So no that would not work.

chad

[DJ DoubleBass]

Well that certainly shines some light on everything....THANK YOU CHAD

So here's another question while on the subject. I've asked similarly on other threads but haven't gotten a straight answer yet.

I'm planning on using Drlava's flexmod drivers for other diode projects, and possibly the little 5mw that's on it's way:

http://hacylon.case.edu/ebay/laser_diode/FlexMod01.php

(I've read the manual and it doesn't answer it exactly either...)

How do I wire the flexmod driver up, especially using the "Analogue Laser Tester?"

Mod+
Mod-
Gnd
V+
+Out
-Out

Etc.

Thanks to everyone's help

Did I mention that this forum rocks?

[CRFultz]

After you have made the correct setup adjustments on the FlexMod you would hook the "tester" to the Mod + and - solder pads.
The voltage supply you will need to provide the Flexmod will be connected to the V+ and GND- pads.
The +Out and -Out will go to the diode pins.
I'm not sure about hooking up a 5mw green. You would have to know what the lasing threshold is in mA, and the max mA draw.
I believe the diode is a 808 nm so you would have to probe the pins and see which pin is positive and which is negative. I'm pretty sure the case of the diode is positive so looking at the pins you should be able to tell by the little black ring around the base of the pin. The black ring in this case should be the negative pin. The positive pin should be case ground. I'm not sure, I have never modded a green so hopefully someone else can help you on this.
Hope this helps

Chuck