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While do some tests with an M140 I'm configuring for a laser cutter CNC rig, I think I might have fried the diode. I'm using constant current ttl driver like this one: http://1.bp.blogspot.com/-1CXU52VYHtY/VNFO4rgDjwI/AAAAAAAABFY/tmR5MUjyMSk/s1600/575720011537.png As I ramp up the signal on...

I'm machining a custom host this week for an M140 diode and will be powering it off of two 18650s and a BlitzBuck 1.8A adjustable driver. I received my protected 18650s (panasonic) today, and realized they don't have raised positive terminals. What is the typical means by which to achieve + to -...

I have a project that requires the use of a green laser for aligning some equipment. The laser I am using is, I believe, this one, but was purchased off Amazon at the time: Aliexpress.com : Buy Free Shipping Green Beam Laser Pointer Pen High Power Bright 500 10000M +Free Battery+Free Charger...

I'll be fabricating a 100% custom host for a 445nm M140 diode out of a 1.5" diameter, 12" long aluminum cylinder. I may end up using the full length, and most likely the full diameter (I feel like the heftyness of such a laser will carry with it the implication that it's a dangerous device)...

Perks of being a grad student: sometimes faculty retire, go theoretical, or relocate, leaving behind a lab that is free for plundering (legally). One of the goodies from such a recent event was a working 1mW HeNe laser. Though not really useful to me in any practical way, I think they're a...