基于Herriott型多通结构的块材料展宽与棱栅对色散补偿的啁啾脉冲放大  

Herriott multi-pass block material stretcher and grism compressor in chirped-pulse amplification

作　　者：张鹏[1,2] 滕浩 杨浩[1,2] 吕仁冲 王柯俭[1,2] 朱江峰[1] 魏志义 Zhang Peng;Teng Hao;Yang Hao;LüRen-Chong;Wang Ke-Jian;Zhu Jiang-Feng;Wei Zhi-Yi(School of Optoelectronic Engineering,Xidian University,Xi’an 710071,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy Sciences,Beijing 100049,China;Songshan Lake Material Laboratory,Dongguan 523808,China)

机构地区：[1]西安电子科技大学光电工程学院,西安710071 [2]中国科学院物理研究所,北京凝聚态物理国家实验室,北京100190 [3]中国科学院大学物理学院,北京100049 [4]松山湖材料实验室,东莞523808

出　　处：《物理学报》2022年第11期171-177,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:12034020,11774277);综合极端条件实验装置资助的课题。

摘　　要：本文报道了基于块材料展宽与棱栅对压缩的飞秒啁啾脉冲放大(chirped-pulse amplification,CPA)系统.展宽器采用基于Herriott型多通结构的块材料作为色散元件,压缩器采用透射光栅与色散棱镜组合的棱栅对,由于它可以同时提供负的二阶和三阶色散,通过优化光栅刻线与棱镜顶角,可以实现对放大器中材料的三阶色散完全补偿,获得更窄的压缩脉冲.实验中,将展宽后的脉冲注入到环形再生腔中进行放大,放大后的脉冲由棱栅对压缩到39.6 fs,非常接近傅里叶变换极限的35.2 fs.由于采用块材料展宽器和棱栅对压缩器,整个放大系统非常紧凑,可作为后续放大以及超快现象研究的可靠光源.We report a femtosecond chirped-pulse amplification(CPA)system based on block material stretcher and grism compression.An optical material block is employed in Herriott multi-reflection configuration as a pulse stretcher,and a transmission grating is combined with dispersion prism to form grism as a compressor which can provide the negative second and third-order dispersion.By optimizing the prism vertex angle and grating line density,the grism can completely compensate for the third-order material dispersion.We obtain shorter compressed pulses.In the experiment,the stretched pulses are amplified by regenerative amplifier,which amplifies the 800 nm seed pulse to 2.30 W under the 11.4 W,527 nm,1 kHz pumping conditions,and the spectral width of the amplified pulse is 26.7 nm.The amplified pulses are compressed to 39.6 fs,which is close to the Fourier transform limit of 35.2 fs.The design of the system simplifies the structure of the conventional chirped pulse amplification system,reduces the space size of the optical path,and improves the operational stability of the laser system.With the block material stretcher and grism compressor,the whole CPA laser system is very compact and can be used as a reliable light source for subsequent amplification as well as ultrafast phenomenon studies.

关 键 词：啁啾脉冲放大 脉冲展宽器 棱栅对压缩 色散补偿 

分 类 号：TN24[电子电信—物理电子学]