Mid-infrared quasi-parametric chirped-pulse amplification based on Sm:LGN crystals

We numerically demonstrate highly efficient mid-infrared quasi-parametric chirped-pulse amplification (QPCPA) based on a recently developed Sm 3+ -doped La 3 Ga 5.5 Nb 0.5 O 14 (Sm:LGN) crystal. At pump wavelength around 1 µm, the broadband absorption of Sm 3+ on idler pulses can enable QPCPA for fe...

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Published inOptics express Vol. 31; no. 5; p. 8864
Main Authors Ding, Yufang, Liu, Jinsheng, Gu, Xingbin, Yuan, Peng, Ma, Jingui
Format Journal Article
LanguageEnglish
Published United States 27.02.2023
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Summary:We numerically demonstrate highly efficient mid-infrared quasi-parametric chirped-pulse amplification (QPCPA) based on a recently developed Sm 3+ -doped La 3 Ga 5.5 Nb 0.5 O 14 (Sm:LGN) crystal. At pump wavelength around 1 µm, the broadband absorption of Sm 3+ on idler pulses can enable QPCPA for femtosecond signal pulses centered at 3.5 or 5 µm, with a conversion efficiency approaching the quantum limit. Due to suppression of back conversion, such mid-infrared QPCPA exhibits robustness against phase-mismatch and pump-intensity variation. The Sm:LGN-based QPCPA will provide an efficient approach for converting currently well-developed intense laser pulses at 1 µm to mid-infrared ultrashort pulses.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.484443