S.G.Grechin, V.G.Dmitriev, V.A.D'yakov, V.I.Pryalkin
"Temperature-independent phase matching for second harmonic generation in a KTP crystal"
Quantum Electronics (Rus.), 1999, v.26, N1, p.77-81

      Theoretical and experimental investigations were made of temperature-independent ("uncritical") phase matching for second harmonic generation. It was found experimentally that the bandwidth of the temperature phase-matching tuning curve for a potassium titanyl phosphate (KTP) crystal 7,7 mm long was 210oC at the fundamental radiation wavelength of 1064,2 nm.

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