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Wavelength doubling laser?

by sparkle_pony
Tags: doubling, laser, wavelength
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May2-14, 04:52 PM
P: 23
I've heard of frequency doubling but is wavelength doubling a thing? If so, how efficient?
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May2-14, 05:07 PM
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PF Gold
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P: 1,908
Frequency doubling divides the wavelength in half:

The inverse process also works, and is usually called parametric down conversion:

Your green laser pointer is an example of frequency doubling/second harmonic generation:
See the schematic diagram on the right hand side - enlarge, and follow the red beam into the crystal which generates the green beam.

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