Rotermund Fabian, Yoon Chang, Petrov Valentin, Noack Frank, Kurimura Sunao, Yu Nan-Ei, Kitamura Kenji
Opt Express. 2004 Dec 27;12(26):6421-7. doi: 10.1364/opex.12.006421.
We demonstrate optical parametric chirped pulse amplification (OPCPA) at 1-kHz repetition rate in periodically poled stoichiometric LiTaO3 (PPSLT) with 1 mol % MgO doping. Diode pumping was used both for the fiber laser generating the femtosecond seed pulses and the nanosecond laser/amplifier employed as a pump source. The high gain ( approximately 63 dB) and large bandwidth (20 nm) obtained for single-stage nondegenerate OPCPA operation provide a compact and efficient solution for amplification of ultrashort pulses near 1.57 microm. Stretched femtosecond pulses could be amplified up to 39.5 microJ in a 7-mm long, 2-mm thick sample of PPSLT. The pulse duration of the amplified signal pulses (FWHM) after recompression amounted to 315 fs.
我们展示了在掺有1摩尔%氧化镁的周期性极化化学计量比钽酸锂（PPSLT）中以1千赫兹重复频率进行的光学参量啁啾脉冲放大（OPCPA）。二极管泵浦既用于产生飞秒种子脉冲的光纤激光器，也用于作为泵浦源的纳秒激光器/放大器。单级非简并OPCPA操作获得的高增益（约63分贝）和大带宽（20纳米）为1.57微米附近超短脉冲的放大提供了一种紧凑且高效的解决方案。在7毫米长、2毫米厚的PPSLT样品中，展宽的飞秒脉冲可被放大至39.5微焦。再压缩后放大信号脉冲的脉冲持续时间（半高宽）达315飞秒。
