Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7128957 | Optics & Laser Technology | 2018 | 5 Pages |
Abstract
Gain redshift in high peak power Ti:sapphire laser systems can result in narrowband spectral output and hence lengthen the compressed pulse duration. In order to realize broadband spectral output in 10â¯PW-class Ti:sapphire lasers, the influence on gain redshift induced by spectral pre-shaping, gain distribution of cascaded amplifiers and Extraction During Pumping (EDP) technique have been investigated. The theoretical and experimental results show that the redshift of output spectrum is sensitive to the spectral pre-shaping and the gain distribution of cascaded amplifiers, while insensitive to the pumping scheme with or without EDP. Moreover, the output spectrum from our future 10â¯PW Ti:sapphire laser is theoretically analyzed based on the investigations above, which indicates that a Fourier-transform limited (FTL) pulse duration of 21â¯fs can be achieved just by optimizing the spectral pre-shaping and gain distribution in 10â¯PW-class Ti:sapphire lasers.
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Authors
Fenxiang Wu, Linpeng Yu, Zongxin Zhang, Wenkai Li, Xiaojun Yang, Yuanfeng Wu, Shuai Li, Cheng Wang, Yanqi Liu, Xiaoming Lu, Yi Xu, Yuxin Leng,