Optical FM in Nd:YVO/sub 4//KTP microchip lasers

Abstract

Potassium titanyl phosphate KTP (KTiOPO/sub 4/) is a material that is being widely used for second-harmonic generation of Nd/sup 3+/- based lasers. The nonlinear crystal is also very good electrooptical modulator. The heterodyne setup based on two microchip Nd:YVO/sub 4//KTP 532nm lasers was build. We demonstrate quite effective frequency control and modulation on the green light.