掺钛蓝宝石再生放大器的光谱整形  

Spectrum Shaping in a Ti∶Sapphire Regenrative Amplifier

作　　者：冷雨欣[1] 林礼煌[1] 徐至展[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《光学学报》2002年第2期170-173,共4页Acta Optica Sinica

基　　金：国家 973项目资助课题

摘　　要：采用腔内和腔外两种方法对激光脉冲进行光谱整形。在掺钛蓝宝石再生放大器中插入一定厚度的石英双折射晶体片 ,通过调节晶体光轴的空间取向 ,对再生放大器输出的脉冲光谱进行腔内整形 ,使再生放大器输出脉冲的谱宽从 2 0nm左右增加到 35nm左右 ,接近进入再生放大器的激光种子脉冲的谱宽。另外用镀反射膜的平板滤光片进行了腔外光谱整形的实验 ,使再生放大器输出脉冲谱宽展宽到 2 8nm左右。Two methods were used to shape the spectrum of laser pulse. The birefringent filter of quartz crystal with the certain thickness was inserted into the Ti∶sapphire regenerative amplifier cavity for the regenerative amplifier intre-cavity spectrum shoping by adjusting the optic axis orientation of the crystal. Through the spectrum shaping, the bandwidth of the regeneratively amplified pulse was increased from approximately 20 nm to approximately 35 nm, which is near the bandwidth of the seed pulse. As a comparison, by using a coated filter outside the regenerative amplifier cavity, the bandwidth of the regeneratively amplified pulse was stretched to approximately 28 nm.

关 键 词：掺钛蓝宝石再生放大器 光谱整形 双折射晶体片 激光脉冲 

分 类 号：TN722.3[电子电信—电路与系统] TN248.1