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BBO for FHG (Fourth Harmonic Generation)

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BBO for FHG

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.