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    Change grating in Ocean Optics HR2000

    Hello. I have an Ocean Optics HR2000 which appears to have been adjusted or have a grating which is giving me ~470-780nm of spectral range. I have some things which I'd like to do which fall outside those limits. Anybody have experience with swapping gratings in these things? Thanks.
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    n00b question about driver voltage

    Hello, folks. I have some TO-5 1W 808nm diodes I want to do some bench experimenting with. I also have a BDR-209 405nm diode coming. Eventually I'd like to be able to run more powerful diodes as well. I'm looking at getting a SDL / IDL-820 type driver to support this work. The 808 and 405...


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