Abstract

We demonstrate a high-energy and high-average power Mamyshev oscillator based on a high performance large-mode-area step-index germanosilicate-cladding Yb-doped fiber. The oscillation of higher-order modes is effectively suppressed by employing appropriate intracavity spatial mode filtering, allowing significant scaling of single pulse energy. The laser directly generates a nearly diffraction-limited beam with an average power of 17 W operating at the fundamental repetition rate of 14.01 MHz, corresponding to a pulse energy of 1.2 μJ. The pulses could be externally dechirped to ∼58 fs, leading to a peak power of ∼13 MW. To the best of our knowledge, this is the highest pulse energy with sub-100 fs duration ever obtained directly from a mode-locked fiber oscillator.

High-power all-normal-dispersion femtosecond pulse generation from a Yb-doped large-mode-area microstructure fiber laser

Caroline Lecaplain, Clovis Chédot, Ammar Hideur, Bülend Ortaç, and Jens Limpert
Opt. Lett. 32(18) 2738-2740 (2007)

Mode-locked pulses from a Thulium-doped fiber Mamyshev oscillator

Paul Repgen, Benedikt Schuhbauer, Moritz Hinkelmann, Dieter Wandt, Andreas Wienke, Uwe Morgner, Jörg Neumann, and Dietmar Kracht
Opt. Express 28(9) 13837-13844 (2020)

Femtosecond Mamyshev oscillator with 10-MW-level peak power

Wu Liu, Ruoyu Liao, Jun Zhao, Jiahua Cui, Youjian Song, Chingyue Wang, and Minglie Hu
Optica 6(2) 194-197 (2019)

All-polarization-maintaining NALM mode-locked Er/Yb-doped large-mode-area fiber oscillator

Kuilei Yang, Lei Feng, Kun Wei, Cuiling Liu, Huiye Zhu, Chunyu Guo, Peiguang Yan, Shuangchen Ruan, and Jinzhang Wang
Opt. Lett. 47(19) 4893-4896 (2022)

High-energy femtosecond pulse generation from a hybrid mode-locked large-mode-area Er:ZBLAN fiber laser

Linpeng Yu, Ziya Tang, Jinhui Liang, Qinghui Zeng, Jiachen Wang, Xing Luo, Jinzhang Wang, Peiguang Yan, Fanlong Dong, Xing Liu, Qitao Lue, Chunyu Guo, and Shuangchen Ruan
Opt. Lett. 48(7) 1830-1833 (2023)