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So I was playing with my great little 300mw red laser off ebay. Of course then I had to point it in a mirror and try to align the beams. The moment I did the diode went down to a faint glow. Did I kill it?

Ebay is full of Chinese cosmetic laser machines which claim extremely high total laser power for surprisingly cheap. For instance the machine linked below features 44 160mw diodes for a total of over 7 watts of laser power. I happen to know the manufacturer is quite huge and somewhat...

Some medical lasers are being marketed at superpulsed, for instance with a 20 watt peak power but average power of only 20 mw. Duty cycle % is less than %0.1 (1/1000 or less). How in the hell would you ever go about measuring one of these things? Pulse frequency is 30000 Hz.

Having gone through a few cheapo pointers I realize specs mean little in China. Can anyone suggest an inexpensive 808nm pointer with adjustable focus and a bona fide output of 1000mw - 2000mw? thanks

I've been looking on Aliexpress and seeing ridiculously cheap high power laser pointers such as this: Free shipping 660nm 5000MW High power RED Laser Pointer Strike a match-in Laser Pointers from Office & School Supplies on Aliexpress.com Is this a total scam? Even a 1000mw pointer at this...

I purchased a Firedragon 200mw 808nm pointer from thelaserfans.com. I didn't get any payment confirmation or email so I contacted them a few times to see if they received my order. No reply. After a few weeks it arrived. I was very happy to try it out. The batteries that came with it was...