摘要
鉴于目前561nm激光器噪声较大,影响其实用性,提出一种高稳定性低噪声的561nm黄光激光器。利用NdYAG晶体得到1 123nm基频光,通过LBO晶体腔内倍频得到561nm输出。理论分析了1 112nm、1 116nm与1 123nm波长的阈值泵浦功率,提出1 123nm的单波长振荡条件,确定谐振腔镀膜要求。根据理论计算,设计了合理的谐振腔膜系,通过抑制1 112nm与1 116nm谱线在谐振腔内的振荡实现1 123nm谱线的单波长振荡。在泵浦功率为5W时,实现了561nm激光单波长输出,输出功率达到107mW,功率不稳定性达到0.7%,噪声为1.2%。
In view of current high noise of domestic 561 nm laser, affecting its practicality, 561 nm yellow laser with high stability and low noise is proposed. Nd ： YAG crystal is used to ob- tain 1 123 nm fundamental frequency light, and output of LBO crystal is 561 nm. Threshold pump power of 1 112 nm, 1 116 nm and 1 123 nm wavelength is analyzed theoretically, and a single wavelength oscillation condition of 1 123 nm is proposed to determine requirements of res- onant cavity coating. According to theoretical calculation, a reasonable resonant cavity system is designed, and single-wavelength oscillation of 1 123 nm line is realized by suppressing oscillation of 1 112 nm and 1 116 nm lines in the resonator. At a pump power of 5 W, 561 nm laser single wavelength output is achieved with an output power of 107 roW, power instability of 0.7% and noise of 1.2 %.
出处
《应用光学》
CAS
CSCD
北大核心
2017年第3期499-505,共7页
Journal of Applied Optics
基金
国家自然科学基金(61405236)
国家高技术研究发展计划(2015AA021106)
