High optical-tooptical efficiency 100-W thin-disk regenerative amplifier dataset

Based on Yb:YAG single-sheet laser module, a double-pass regenerative amplification system was designed and built, which achieved a laser output with a repetition rate of 10 kHz, pulse width of 3.4 ns and an average power of 137 W under 500 W continuous pumping, with an optical efficiency of 27.4%, which was more than double the optical efficiency of 13.3% compared with the single-pass thin-disk regenerative amplifier, and the beam quality M2 factors in the horizontal and vertical directions were 1.15 and 1.08, respectively. Without active feedback control, the stability peak-to-valley (PV) and root mean square values (RMS) of the laser output within 3.5 hours of average power are 5.77% and 0.77%, respectively, and the optical conversion efficiency and output power stability of the optimized thin-disk regenerative amplifier are greatly improved.

本研究基于掺镱钇铝石榴石（Yb:YAG）单薄片激光模组，设计并搭建了一套双程再生放大系统。该系统在500W连续泵浦工况下，实现了重复频率10kHz、脉冲宽度3.4ns、平均功率137W的激光输出，光学转换效率达27.4%，相较单程薄盘再生放大器13.3%的光学效率提升了一倍以上；其水平与垂直方向的光束质量因子M²分别为1.15和1.08。在未引入主动反馈控制的前提下，3.5小时内激光输出平均功率的稳定性峰谷值（PV）与均方根值（RMS）分别为5.77%和0.77%，经优化的薄盘再生放大器的光转换效率与输出功率稳定性均得到显著提升。