5TW/40fs级台式钛宝石激光系统研究  

Studies on 5 TW/40 fs Table-Top Ti∶Sapphire Laser System

作　　者：梁敏[1] 李文雪[1] 胡婉约[1] 王二玉[1] 丁良恩[1] 

机构地区：[1]华东师范大学光谱学与波谱学教育部重点实验室

出　　处：《光学学报》2006年第1期81-85,共5页Acta Optica Sinica

摘　　要：在TSA-25系统输出35 mJ,800 nm啁啾脉冲的基础上,建立了以钛宝石作为增益介质的二级啁啾脉冲放大(CPA)系统。使用0.6 J和1.6 J,532 nm,10 Hz Nd∶YAG激光抽运,输出脉冲能量达到500 mJ,经压缩脉冲宽度为41 fs,压缩器的能量转换效率为63%,峰值功率可达7.6 TW。通过对放大器系统的钛宝石晶体、抽运密度以及多通结构通道数的选择等实验,有效地提高了能量放大器的萃取效率。其主放大器能量萃取效率达到32%,整个系统占用尺寸不到10 m2。A table-top Ti： sapphire laser system with two-stage amplifier was built based on TSA-25 regeneration amplifier. Pumped by 0, 6 J and 1,6 J, 532 nm, 10 Hz of Nd： YAG lasers, the output energy reached 500 mJ and a pulse with duration of less than 41 fs was generated by using a single grating compressor, the energy convevsion efficiency of the compressor was 63% and the peak power reached 7, 6 TW, By the experiments on the different absorption of crystals for 532 nm, pump-to-IR efficiency with pump fluence and passes of amplification, the system was optimized with an extraction efficiency of power amplifier ～32 %, compacted less than 10 m^2.

关 键 词：超快光学 超短脉冲激光 啁啾脉冲放大 萃取效率 钛宝石 

分 类 号：TN245[电子电信—物理电子学]