Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Albert-Einstein-Strasse 15, 07745 Jena, Germany. alexander.steinmetz@uni‐jena.de
Opt Lett. 2012 Jul 1;37(13):2550-2. doi: 10.1364/OL.37.002550.
We report on high-energy picosecond pulse generation from a passively Q-switched and fiber-amplified microchip laser system. Initially, the utilized microchip lasers produce pulses with durations of around 100 ps at 1064 nm central wavelength. These pulses are amplified to energies exceeding 100 μJ, simultaneously chirped and spectrally broadened by self-phase modulation using a double stage amplifier based on single-mode LMA photonic crystal fibers at repetition rates of up to 1 MHz. Subsequently, the pulse duration of chirped pulses is reduced by means of nonlinear pulse compression to durations of 2.7 ps employing a conventional grating compressor and 4.7 ps using a compact compressor based on a chirped volume Bragg grating.
我们报告了一种基于被动调 Q 和光纤放大的微芯片激光系统的高能皮秒脉冲产生。最初，所使用的微芯片激光器在 1064nm 中心波长下产生持续时间约为 100ps 的脉冲。这些脉冲通过基于单模 LMA 光子晶体光纤的两级放大器进行放大，同时通过自相位调制进行啁啾和光谱展宽，重复率高达 1MHz。随后，通过采用传统的光栅压缩器将啁啾脉冲的脉宽压缩至 2.7ps，采用基于啁啾体布拉格光栅的紧凑型压缩器将脉宽压缩至 4.7ps，从而缩短了啁啾脉冲的脉宽。
