摘要
通过理论分析和实验讨论了内腔倍频Nd:YAP/KTP单频激光器的强度噪声特性,并通过减小输出耦合镜对1080nm基频光的透射率和优化谐振腔参数等办法,使基频光在环形谐振腔内的损耗降低为0.9%,从而减小了真空起伏引入的强度噪声。在输出耦合镜对1080nm基频光透射率为0.2%时,获得了最高输出功率为420/60mW的540/1080nm双波长输出单频激光器,其强度噪声在1.5MHz之后达到散粒噪声极限。
The intensity noise characteristics of a compact and low-noise intracavity frequency-doubled single- frequency Nd： YAP/KTP laser is analyzed theoretically and experimentally. By reducing the transmission rate at 1080 nm of the output coupling mirror, optimizing the parameters of the resonator, and so on. The intracavity losses decrease to 0.9 %. As a result, the intensity noise of the output beam, which induced from vacuum fluctuations, is reduced to a lower level. When the transmission rate at 1080 nm of the output coupling is 0.2%, an output power of 420/60 mW at 540/1080 nm dual wavelengths single-frequency laser is manufactured, and its intensity noise is reduced to shot noise limit above 1.5 MHz.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2014年第5期7-11,共5页
Chinese Journal of Lasers
基金
国家自然科学基金(61008001
61227015)
国家973计划(2010CB923101)
山西省自然科学基金(2011021003-2)
