论文部分内容阅读
基于激光二极管抽运棒状放大器和板条放大器相结合的方式,研制了一台应用于汤姆孙散射诊断的高重复频率、高光束质量焦耳级的Nd:YAG纳秒激光器.激光器采用主振荡功率放大的结构,主要包括单纵模种子、预放大单元和能量提取单元三部分.为了获得高光束质量的激光输出,采用相位共轭技术对激光光束畸变进行补偿.在重复频率200 Hz,单纵模种子注入单脉冲能量8.23μJ的条件下,获得了1.85)的能量输出.输出激光的脉冲宽度为5.36 ns,远场光斑为1.72倍衍射极限,能量稳定性(RMS)为1.3%.
A Nd: YAG nanosecond laser with high repetition rate and high beam quality, which is used in the diagnosis of Thomson scattering, was developed based on the combination of a laser diode pumping rod amplifier and a slat amplifier. The laser uses the main oscillator power amplification Structure, including single-longitudinal mode seed, pre-amplification unit and energy extraction unit.In order to obtain laser beam with high beam quality, the phase conjugation technique is used to compensate the laser beam distortion.When the repetition frequency is 200 Hz, The energy output of 1.85) was obtained with a single pulse energy of 8.23μJ, the pulse width of the output laser was 5.36 ns, the far-field spot was 1.72 times the diffraction limit and the energy stability (RMS) was 1.3%.