双KTP晶体倍频过程的实验研究(二)——光学参量振荡腔内串接倍频

Experimental investigation of frequency doubling in two KTP crystals (2)——frequency doubling in OPO

按第一部分指出的串接方位,将串接的双KTP晶体置于光学参量振荡腔中,并采用控温方式补偿程差,实现双模共振,使倍频效率较内腔单模起振提高近30倍,理论分析与实验结果基本符合。

Two-mode reonance has been observed in an optical parametric oscillator (OPO) with two KTP crystals. The difference of optical path between two modes was compensated by temperature control for the crystals. The frequency doubling efficiency for two-mode resonance was about 30 times higher than single mode resonance. The experimental results are essentially in agreement with the theoretical analyses.