Abstract

We theoretically and experimentally report and evaluate a novel split laser-diode (LD) double-end pumped Yb:KYW ultrafast oscillator aimed at improving the performance of an ultrafast laser. Compared to a conventional unpolarized single-LD end-pumped ultrafast laser system, we improve the laser performance such as absorption efficiency, slope efficiency, cw mode-locking threshold, and output power by this new structure LD-pumped Yb:KYW ultrafast laser. Experiments were carried out with a 1 W output fiber-coupled LD. Experimental results show that the absorption increases from 38.7% to 48.4%, laser slope efficiency increases from 18.3% to 24.2%, cw mode-locking threshold decreases 12.7% from 630 to 550 mW in cw mode-locking threshold, and maximum output-power increases 28.5% from 158.4 to 221.5 mW when we switch the pump scheme from an unpolarized single-end pumping structure to a split LD double-end pumping structure.

© 2016 Optical Society of America

Highly efficient and low threshold diode-pumped Kerr-lens mode-locked Yb:KYW laser

A. A. Lagatsky, C. T. A. Brown, and W. Sibbett
Opt. Express 12(17) 3928-3933 (2004)

Octave-spanning optical frequency comb based on a laser-diode pumped Kerr-lens mode-locked Yb:KYW laser for optical frequency measurement

Masatoshi Mitaki, Kazuhiko Sugiyama, and Masao Kitano
Appl. Opt. 57(18) 5150-5160 (2018)

Direct generation of vortex beams from a double-end polarized pumped Yb:KYW laser

Sha Wang, Shu-Lin Zhang, Hong-chao Qiao, Ping Li, Mei-hui Hao, Huo-Mu Yang, Jian Xie, Guo-Ying Feng, and Shou-huan Zhou
Opt. Express 26(21) 26925-26932 (2018)

Passively mode-locked Yb:KYW laser pumped by a tapered diode laser

P. Klopp, V. Petrov, U. Griebner, and G. Erbert
Opt. Express 10(2) 108-113 (2002)

Efficient 914-nm Nd:YVO₄ laser under double-end polarized pumping

Pengbo Jiang, Xin Ding, Quan Sheng, Bin Li, Xuanyi Yu, Guizhong Zhang, Bing Sun, Liang Wu, Jian Liu, Wei Zhang, Cen Zhao, and Jianquan Yao
Appl. Opt. 55(5) 1072-1075 (2016)