Improvement of Output Stability of CO2 Laser Pumped FIR Lasers by Using an Optical Isolator
Improvement of Output Stability of CO2 Laser Pumped FIR Lasers by Using an Optical Isolator
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使用光隔离器提高 CO2 激光器泵浦 FIR 激光器的输出稳定性
DOI：
10.1109/irmmw-thz.2016.7758948
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Kawahata
中科院分区：
文献类型：
--
作者：
K. Nakayama;S. Okajima;T. Akiyama;K. Tanaka;K. Kawahata
研制了用于聚变等离子体诊断的9 R（8）CO_2激光泵浦的48 μm和57 μ mCH_3 OD激光器。光泵远红外（FIR）激光器谐振腔的背反射不仅影响FIR激光器的稳定性，而且影响泵浦CO2激光器的稳定性。利用四分之一波片和吸收薄膜反射镜构成的光隔离器，减小了背反射。在48 μm和57 μm激光器上分别获得了± 1.4%/h和± 1.3%/h的稳定输出。
Simultaneously oscillated 48-μm and 57-μm CH3OD lasers pumped by a 9R(8) CO2laser have been developed for fusion plasma diagnostics. A back reflection from an optically pumped far-infrared (FIR) laser cavity affects not only the FIR laser stability but also the pump CO2laser stability. The back reflection has been reduced by an optical isolator using a quarter-wave plate and an absorbing thin-film reflector. As a result, we have achieved output stabilities of ±1.4 %/h at the 48-μm laser and ±1.3 %/h at the 57-μm laser.