掺钕双频微片激光器功率均衡实验研究

为了探究掺钕晶体对激光器功率均衡机制的影响 ,实验对不同参数的掺钕晶体双频微片激光器进行了功率均衡实 验研究。在实验中,通过改变抽运功率和调节热沉温度等手段,研究了双频微片激光器功率 在均衡状态时,热沉温度、 抽运功率和双频激光功率积等参数之间的关系。研究结果表明:对于功率均衡的掺钕双频微 片激光器,当抽运功率增加 时,热沉温度随之降低且与之呈负相关,需要降低热沉温度以实现双频激光的功率重新均衡 ；重新均衡后的双频激光波 长与频差不随抽运功率的变化而变化；功率均衡的双频激光功率积随抽运功率的增大而增大 ,且呈正相关。此结果说明 对于不同参数的掺钕晶体双频微片激光器,均可通过改变抽运功率和热沉温度可以实现功率 可调的功率均衡的双频激光 信号输出。这种输出功率可调谐的双频微片激光器在光生毫米波等领域有较大用途。

Experimental study on the power balance mechanism of neodymium-doped dual-frequency microchip lasers

In order to investigate the effect of neodymium doped crystal on the l aser power balance mechanism,experiments were carried out on the power balance experiments of neodymium doped crystal dua l-frequency microchip lasers (DFLs) with different parameters.In the experiments,by changing the pump power and adjusting the hea t sink temperature,the dynamic relationship among the heat sink temperature,pump power and balanced dual-frequency laser p ower product were obtained.The experimental results show that for the neodymium doped DFLs,w hen power balance is achieved,with the increase of the pump power,the heat sink temperature decreases and is negatively correl ated to the pump power.Therefore,the lower of the heat sink temperature is required for the power re-balance.The power produ cts of the dual-frequency lasers increase with the pump power increasing and is positively correlated.However,the center wavelengt hs and the frequency separations remain almost unchanged.All the results indicate that for neodymium doped crystal dual-freq uency microchip lasers with different parameters, the power balanced dual-frequency laser signal output which is power-adjustabl e can be achieved by changing the pump power and controlling the heat sink temperature.Such a power tunable DFL has a great a pplication in the field of optical millimeter-wave generation.