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High peak power picosecond DPSS laser beam at 1064 nm causes Second Harmonics Generation in crystal quartz (video).

High peak power picosecond DPSS laser beam at 1064 nm causes Second Harmonics Generation in crystal quartz (video).

By In Uncategorized On October 7, 2016


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In the video below you can see how a high power laser beam (around 50MW), emitted by Passat’s picosecond DPSS laser at 1064 nm, caused rather strong excitation of green light in a quartz crystal.
A similar phenomenon of frequency doubling in crystal quartz was discovered for the first time in 1961 using a ruby laser. For 1064 nm, the second harmonic generation requires a high power laser beam to produce a bright green spot. But, as far as we know, nobody used crystal quartz for 1064 nm doubling.

 

On the video you can see the excitation and how easily it can be attenuated by rotating the quartz crystal.


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