High-efficiency bismuth borate-based optical parametric chirped pulse amplifier with approximately 2.1 mJ,38 fs output pulses at approximately 2150 nm  

作　　者：Augustinas Petrulenas Paulius Mackonis Aleksej M.Rodin 

机构地区：[1]Solid State Laser Laboratory,Center for Physical Sciences and Technology,Vilnius,Lithuania

出　　处：《High Power Laser Science and Engineering》2023年第2期94-102,共9页高功率激光科学与工程（英文版）

基　　金：This research was sponsored by the Research Council of Lithuania under contract S-MIP-21-30.Two of the authors are grateful for NATO SPS G5734 fellowships.

摘　　要：We present a compact and cost-effective mJ-level femtosecond laser system operating at a center wavelength of approximately 2.15μm.An affordable two-stage ytterbium-doped yttrium aluminum garnet(Yb:YAG)chirped pulse amplifier provides more than 10 mJ,approximately 1.2 ps pulses at 1030 nm to pump a three-stage optical parametric chirped pulse amplifier(OPCPA)based on bismuth borate crystals and to drive the supercontinuum seed in the YAG crystal.The energy of the amplified pulses in the wavelength range of 1.95–2.4μm reached 2.25 mJ with a pump-tosignal conversion efficiency of approximately 25%in the last OPCPA stage.These pulses were compressed to 38 fs in a pair of Suprasil 300 glass prisms.

关 键 词：MID-INFRARED optical parametric chirped pulse amplifier short infrared SUPERCONTINUUM ytterbium-doped yttrium aluminum garnet 

分 类 号：TN248[电子电信—物理电子学] TN722