Demonstration of joule-level chirped pulse amplification based on tiled Ti:sapphire amplifier

Keyang Liu; Yanqi Liu; Yunhai Tang; Junchi Chen; Cheng Wang; Xingyan Liu; Xiaobin Wang; Yingbin Long; Yi Xu; Yujie Peng; Xiaoming Lu; Zhengzheng Liu; Yuxin Leng

doi:10.3788/COL202119.011401

Journals >Chinese Optics Letters >Volume 19 >Issue 1 >Page 011401 > Article

Chinese Optics Letters
Vol. 19, Issue 1, 011401 (2021)

Demonstration of joule-level chirped pulse amplification based on tiled Ti:sapphire amplifier

Keyang Liu^1、2、3, Yanqi Liu^1、*, Yunhai Tang¹, Junchi Chen¹, Cheng Wang¹, Xingyan Liu^1、2、3, Xiaobin Wang¹, Yingbin Long¹, Yi Xu¹, Yujie Peng¹, Xiaoming Lu¹, Zhengzheng Liu¹, and Yuxin Leng^{1、2、4、**}

Author Affiliations

¹State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, China

³University of Chinese Academy of Sciences, Beijing 100049, China

⁴CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China

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DOI: 10.3788/COL202119.011401 Cite this Article Set citation alerts

Keyang Liu, Yanqi Liu, Yunhai Tang, Junchi Chen, Cheng Wang, Xingyan Liu, Xiaobin Wang, Yingbin Long, Yi Xu, Yujie Peng, Xiaoming Lu, Zhengzheng Liu, Yuxin Leng. Demonstration of joule-level chirped pulse amplification based on tiled Ti:sapphire amplifier[J]. Chinese Optics Letters, 2021, 19(1): 011401 Copy Citation Text

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Abstract

A novel tiled Ti:sapphire (Ti:S) amplifier was experimentally demonstrated with >1 J amplified chirped pulse output. Two Ti:S crystals having dimensions of 14 mm× 14 mm× 25 mm were tiled as the gain medium in a four-pass amplifier. Maximum output energy of 1.18 J was obtained with 2.75 J pump energy. The energy conversion efficiency of the tiled Ti:S amplifier was comparable with a single Ti:S amplifier. The laser pulse having the maximum peak power of 28 TW was obtained after the compressor. Moreover, the influence of the beam gap on the far field was discussed. This novel tiled Ti:S amplifier technique can provide a potential way for 100 PW or EW lasers in the future.

Keywords

chirped pulse Ti:sapphire crystal tiled Ti:sapphire amplifier