1993•Optical EngineeringRequires access

Second-harmonic generation in KNbO3 crystals

Yutian Lu

Abstract

Efficient second-harmonic generation from a pulsed parametric laser to 427 to 470 nm has been obtained in a KNbO3 crystal only 1.5 mm in length by angular tuning at room temperature. The energy conversion efficiency is over 40%. Single pulse blue light output reaches 60 kW in peak power. The angular dependence of a phase matching wavelength, the relation between conversion efficiency and fundamental intensity, and acceptable angular phase mismatch are studied and discussed.

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Key concepts: Energy conversion efficiency, Optics, Materials science, Phase matching, Second-harmonic generation, Wavelength, Quasi-phase-matching, Laser