BBO for FHG (Fourth Harmonic Generation)
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BBO (Beta Barium Borate) Is a nonlinear crystal that offers several unique and very important characteristics
BBO material is widely recognized for these features:
- Very wide transparency
- Moderately high nonlinear coupling
- High damage threshold
- Good chemical and mechanical properties
Fourth Harmonic Generation (FHG) is a process whereby light is generated at a wavelength which is 1/4 of the pump wavelength, and it occurs through a two stage nonlinear interaction. The first interaction is doubling of the pumping laser, followed by the further SHG of the generated wavelength.
