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Old 08-11-2013, 12:44 AM #1
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Default graphing crystal efficiency as a function of wavelength and power?

From my understanding of nonlinear optics, laser crystals are only effective at certain wavelengths, but they become more efficient as the input power is increased. This may explain the existence of "freak" units with absurdly high powers.

This got me thinking: it would be cool if there were graphs that showed the efficiency of a laser crystal as a function of input power and wavelength. Because there are three variables involved, such a plot would have to be in 3D unless color gradients were used.

It would be impossible to get a perfectly accurate data set because every DPSS laser crystal is different, but I think even a rough illustration would be very useful to our members that want to learn more. Such a graph could be created for the most common crystals. Anyone up for the task?

Edit: below is an extremely rough idea of what such a graph could look like:



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Old 08-11-2013, 01:43 AM #2
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Default Re: graphing crystal efficiency as a function of wavelength and power?

Very interesting idea I probably couldn't help much, but this is a brilliant idea
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Old 08-11-2013, 01:47 AM #3
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Default Re: graphing crystal efficiency as a function of wavelength and power?

I'd do it for you, but I'm fresh out of high-power tunable IR lasers.
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Old 08-11-2013, 03:41 AM #4
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Default Re: graphing crystal efficiency as a function of wavelength and power?

Sorry for the derail but this thread gave me a cool idea. It would be really cool if maybe 5-10 of us all got together and bought 5-10 (depending on how many people want to) of the same IR diodes, crystal sets and optics and all made DPSS greens. Then share our results!
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Old 08-11-2013, 03:50 AM #5
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Default Re: graphing crystal efficiency as a function of wavelength and power?

I doubt we need to collect our own data as I'm sure some academic paper out there already has the figures. On the other hand, finding those papers probably isn't going to be easy.
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Old 08-15-2013, 12:08 AM #6
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Default Re: graphing crystal efficiency as a function of wavelength and power?

Quote:
Originally Posted by Cyparagon View Post
I'd do it for you, but I'm fresh out of high-power tunable IR lasers.
What?!

Just whip out your femtosecond pumps and warm up the TECs!

Such a pessimist...
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