Sapphire-based graphene saturable absorber for long-time working femtosecond lasers

Abstract

We report a long-time working femtosecond laser using metal-free sapphire-based graphene as a saturable absorber (SA). The sapphire-based graphene yielded excellent nonlinear saturable absorption properties and was demonstrated to be suitable as an SA for an ultrafast solid-state laser. Stable mode-locked pulses of 325 fs were obtained at a central wavelength of 1032 nm with a repetition rate of 66.3 MHz. At pump power of 8.23 W the average output power was 1.78 W and the highest pulse energy reached 26.8 nJ with a peak power of 72.6 kW. Our work opens up a facile route for making reliable graphene SA in the mode-locking technique and also displays an exciting prospect in making low-cost and ultrafast lasers.

© 2014 Optical Society of America

Carbon nanostructure-based saturable absorber mirror for a diode-pumped 500-MHz femtosecond Yb:KLu(WO₄)₂ laser

Sun Young Choi, Jun Wan Kim, Mi Hye Kim, Dong-Il Yeom, Byung Hee Hong, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Valentin Petrov, Uwe Griebner, and Fabian Rotermund
Opt. Express 22(13) 15626-15631 (2014)

Large energy laser pulses with high repetition rate by graphene Q-switched solid-state laser

Xian-lei Li, Jin-long Xu, Yong-zhong Wu, Jing-liang He, and Xiao-peng Hao
Opt. Express 19(10) 9950-9955 (2011)

Graphene saturable absorber mirror for ultra-fast-pulse solid-state laser

Jin-Long Xu, Xian-Lei Li, Yong-Zhong Wu, Xiao-Peng Hao, Jing-Liang He, and Ke-Jian Yang
Opt. Lett. 36(10) 1948-1950 (2011)

Sub-100-fs Cr:YAG laser mode-locked by monolayer graphene saturable absorber

Samuele Davide Di Dio Cafiso, Elena Ugolotti, Andreas Schmidt, Valentin Petrov, Uwe Griebner, Antonio Agnesi, Won Bae Cho, Bo Hee Jung, Fabian Rotermund, Sukang Bae, Byung Hee Hong, Giancarlo Reali, and Federico Pirzio
Opt. Lett. 38(10) 1745-1747 (2013)

Few-layer Ti₃C₂T_x (T = O, OH, or F) saturable absorber for a femtosecond bulk laser

Xiaoli Sun, Baitao Zhang, Bingzheng Yan, Guoru Li, Hongkun Nie, Kejian Yang, Chengqian Zhang, and Jingliang He
Opt. Lett. 43(16) 3862-3865 (2018)