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BBO for SHG (Second Harmonic Generation)

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BBO (Beta Barium Borate, β-barium borate or β-BaB2O4)

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

Second Harmonic Generation (SHG) is a nonlinear optical process whereby the pumping wavelength generates a new wavelength that is half of the input wavelength or double frequency. When using Nd:YAG wavelength 1064 nm the SHG will become 532 nm which is within the green light spectrum