摘要
采用2400l/mm的平面光栅搭建Littrow外腔压窄半导体激光器输出激光线宽,获得中心波长可调的线宽0.16nm的半导体激光作为铷蒸气激光的泵浦源。实验中,使用斩波器将泵浦光变为脉宽1ms,重复频率100Hz的重复脉冲形式,聚焦进长度为8mm的铷蒸气泡,泡内充入79kPa甲烷作为缓冲气体。进入铷蒸气泡的泵浦光峰值功率为1.84W时,控制铷泡温度在125℃,获得了峰值功率17.5mW的基模线偏振铷激光输出。
A Littrow external cavity was built to narrow the spectral linewidth of a diode laser to 0.16 nm by using a 2400 line/mm plane grating, with the center wavelength of the laser tunable. The laser was used as the pump source of the rubidium vapor laser. A chopper was employed to change the continuous laser to pulsed laser with the pulse width of 1 ms and the repeti- tion rate of 100 Hz, then the laser was focused to a Rb vapor cell with the length of 8 mm which was filled with Methane at the pressure of 79 kPa. With the maximum peak power of the pulsed laser injected into the Rb cell is 1.84 W and the temperature of the cell is controlled at about 125 ℃, the linearly polarized fundamental mode Rb laser with the peak power of 17.5 mW is ob- tained.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2012年第10期2269-2270,共2页
High Power Laser and Particle Beams
