Generation of high-energy picosecond pulses in an Yb-doped fiber oscillator with enhanced grating compressors.

作者：Chenran Sha, Chunlei Li, Fang Chen, Luming Zhao, Zhi Zhao · 发表于：Optics Letters · 年份：2025 · DOI：10.1364/ol.561650 · 研究领域：Medicine

We report on the generation of high-energy picosecond pulses in an Yb-doped single-mode fiber oscillator with enhanced grating compressors. Inserting two lenses in a pair of gratings, the spectral chirp of the optical pulses could be enlarged up to 5.5 times, compared to the conventional Treacy grating compressors, demonstrating the enhanced grating compressor technique [Ivanov, Opt. Express30, 35338 (2022)10.1364/OE.468814]. By using Treacy grating compressors and enhanced grating compressors, the anomalous dispersion in the cavity can be varied by 2300 times, from -0.67 ps2 to -1565 ps2, and the fiber oscillator delivers optical pulses with duration from 1.0 ps to 302.0 ps and energy from 0.6 nJ to 102.7 nJ. The pulse energy of 102.7 nJ is the largest, to the best of our knowledge, from a classical soliton laser.