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I am looking to use 2 and 3-watt 808nm C-mounts as pumps for 532nm systems. I need a driver with the following characteristics: 3.7-4.2 V input (single Li-Ion or equivalent) Capable of delivering 2 to 4 A at 2V, fully adjustable Ultimately, maybe a version that could power 5, 8, or even 10W...

You're referring here to the Spectra-Physics Model 125...I've had a couple of these. With a new tube, and RF stabilization, I got a max of 130mW of 6328, 15mW of 6118 orange, and 2-3mW of 5943 yellow. The rear reflector on the 125 is a broadband-coated Littrow prism, to allow for color...

If I might take a moment to grab the wheel and steer this conversation in a more productive direction... Never seemed to me to be a good idea to apply soldering temperatures, however briefly, to something as temperamental as a Li-Ion battery. Yes, I have tried the rare-earth magnets, and they...