Open AccessA 4 mJ femtosecond Ti：sapphire regenerative amplifier at 1 kHz repetition rate
Author(s) -
ZW Shen,
Wang Zh,
HT Fan,
Shuang Qin,
Hao Teng,
Huimin Pang,
ZY Wei
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.104211
Subject(s) - femtosecond , materials science , sapphire , laser , amplifier , optics , regenerative amplification , ti:sapphire laser , chirped pulse amplification , wavelength , optoelectronics , dispersion (optics) , pulse (music) , physics , cmos , detector
To meet the application requirements for high energy kHz repetition rate femtosecond laser, a high-efficiency femtosecond Ti:sapphire linear regenerative amplifier is designed. By optimizing the parameters of the cavity, 5.8 mJ chirped pulses at 800 nm are obtained, under pump energy of 20 mJ with wavelength of 527 nm at 1 kHz repetition rate, corresponding to a slope efficiency of 30.7%. By compensating for the dispersion, 4 mJ laser pulses at 800 nm with pulse duration of 45.7 fs are achieved. The energy fluctuation is 0.18% (RMS) in 5 h.