用于ps脉冲放大的大口径放电泵浦KrF激光器
Large aperture discharge-pumped KrF laser for picosecond amplification
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摘要: 以简单的火花间隙作为放电开关,建立了一种用于ps脉冲激光放大的大口径放电泵浦KrF准分子激光器。该激光器的有效增益口径截面为4cm×3cm,在自由运转情况下最大激光输出能量为1.3J,脉宽20ns。用作ps放大器时,利用光学偏振放大方式获得了激光能量140mJ,脉冲宽度10ps的激光输出。利用XeCl激光泵浦的染料激光作为探针测量了不同放电条件下和不同气分比条件下激光的增益和吸收系数。Abstract: A large aperture discharge-pumped KrF laser module with simple spark gaps was developed. The laser beam cross section of 4cm×3cm and the maximum laser output energy of 1.3J in 20ns were obtained at the charging voltage of 30kV and gas mixtures of [F2]∶[Kr]∶[Ne]= 0.1∶2∶97.9. The gain and absorption coefficients at different gas mixtures were measured with a frequency doubled dye laser pumped by a XeCl laser. Using this laser module as a ps amplifier, the output energy of 140mJ in 10ps was obtained.
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Key words:
- wide aperture /
- discharge-pumped /
- krf laser /
- ps amplifier
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