新型大频差可调谐双频激光器

A Novel Tunable Dual-frequency Laser with Large Frequency Difference

提出了一种新型大频差可调谐双频激光器。利用 L D端面泵浦 Nd:YAG微片 ,将液体压强通过传递膜片加到晶体径向上。由于应力双折射效应 ,此微片激光器纵模发生分裂产生频差。理论分析和实验表明 ,此频差与施加的压强成正比关系 ,通过改变压强即可实现频差调谐。实验中获得了良好的频差与所加压强的线性调谐关系 ,并得到了约 3.4

This paper proposed a novel tunable dual frequency laser with large frequency difference,which uses LD to pump the Nd:YAG microchip in the end surface and put the liquid pressure on the radius direction of the crystal by a pressure transporting thin film.As a result of the stress birefringence there is a mode splitting phenomenon of the microchip lasers longitudinal mode with frequency difference.Both the theoretical analysis and the experiments indicate that there is a direct relation between the frequency difference and the pressure,so the tunable frequency difference can be obtained when the pressure is changed.A large frequency difference can be obtained when the pressure is changed.A large frequency difference which is about 3.4 GHz with good linear tunable relation was achieved in the experiment.