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David Notebook: Difference between revisions
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The next step for the experiment will be to try to modulate a broadband signal. I'm looking if there's a cheapish wavemeter or spectrum analyzer option with high sensitivity, since we'd need to be able to look at a broad output rather than a narrow beam.
'''HighFinesse'''--has some spectrum analyzers, but they don't seem sensitive enough.
'''Moglabs'''--has a really cool looking very sensitive (pW) wavemeter, but it only has a bandwidth of about 20 nm when set at a given wavelength. It can measure over a wide range, but must be recalibrated. Maybe this could work though by slowly building up the spectrum? How wide an input are we thinking of? This wouldn't be practical if we'd need to search over hundreds of nm, but we could probably build up a small spectrum without much difficulty.
'''Coherent'''--has a wavemeter, but too narrow bandwidth to be useful
'''Thorlabs'''--has several spectrum analyzers, but none are sensitive down to nW
'''8/12/14'''
Got to a maximum of 3.3 nW chopped power, for a conversion efficiency of <math> 4.1 *10^{-7} </math>. Again, I'm not sure if these powers are scaled properly since I've gotten somewhat different values with every technique, but they do at least seem linear at this point. I'm going to change the gas pressure now.
'''Exfo'''--has a wavemeter but not sensitive enough
'''Bristol Instruments'''--has a multi-wavelength meter, but not sensitive enough or over the right range.
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