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KTP for SHG (Second Harmonic Generation)

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KTP (Potassium Titanyl Phosphate – KTiOPO4is a nonlinear optical material generally used for doubling of solid-state lasers.

KTP material is widely recognized for these features:

  • High optical damage threshold
  • Large optical nonlinearity of second-harmonic generation (SHG)
  • Excellent thermal stability.
  • SHG coefficient is approximately three times higher than KDP

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 1064nm the SHG will become 532nm which is within the green light spectrum