• Chinese Journal of Quantum Electronics
  • Vol. 39, Issue 4, 566 (2022)
Hao YANG1、2、*, Hao TENG2、3, Renchong LYU1、2, Jiangfeng ZHU1, and Zhiyi WEI2、3、4
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    DOI: 10.3969/j.issn.1007-5461. 2022.04.011 Cite this Article
    YANG Hao, TENG Hao, LYU Renchong, ZHU Jiangfeng, WEI Zhiyi. Study on femtosecond chirped-pulse amplification based on concentric stretcher[J]. Chinese Journal of Quantum Electronics, 2022, 39(4): 566 Copy Citation Text show less

    Abstract

    The matching of time domain stretcher and compressor is the key to obtain high contrast femtosecond pulse in chirped-pulse amplification (CPA) laser system. Compared with the conventional Martinez type stretcher and ffner type stretcher, the stretcher based on concentric structure can eliminate the effect of higher-order dispersion induced by aberration due to the fact that the object is completely coincident with the image, and can further realize better pulse compression with double grating compressor. The concentric stretcher, which consists of a transmission grating pair and a concave mirror, has the advantage of compact structure. Replacing the original Martinez stretcher with the concentric stretcher, under the condition of 1 kHz repetition rate and11.4 W pump power, the stretched chirped pulse is amplified by the ring-cavity Ti: Sapphire regenerative amplifier and then compressed by the grating pair compressor. The compression result with pulse duration of 47.5 fs is obtained, which is close to the Fourier transform limit of spectral bandwidth of 22.1 nm. The results show that the concentric stretcher based on transmission grating can achieve better compression result for femtosecond pulse.
    YANG Hao, TENG Hao, LYU Renchong, ZHU Jiangfeng, WEI Zhiyi. Study on femtosecond chirped-pulse amplification based on concentric stretcher[J]. Chinese Journal of Quantum Electronics, 2022, 39(4): 566
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