论文信息 - Research on quasi-phase-matched mid-infrared optical parametric oscillator

Research on quasi-phase-matched mid-infrared optical parametric oscillator

The theoretical analysis and experimental research of the optical parametric oscillator (OPO) based on periodically poled LiNbO3 (PPLN) crystal are presented. The wavelength tuning curves of PPLN-OPO are calculated through the coupling equations of the three-wave mixing. An optical parametric oscillator with the output signal at 1.49μm and idler at 3.8μm, which is pumped by a Nd:YAG laser at 1.064μm, is obtained based on PPLN of length 20mm and thickness 0.5mm. When the pump power of the Nd:YAG laser is 5.2W with a repetition rate of 5kHz, the output of the idler at 3.8μm reaches 307mW.

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