Abstract

A wavelength-tunable Q-switched erbium-doped fiber laser based on a digital micromirror device (DMD) is experimentally demonstrated. The Q-switched pulses are generated by incorporating a saturable absorption device made of graphene oxide. Stable Q-switched pulses at 1.5 µm band are obtained at a low threshold of 20 mW, corresponding to the pulse width of  7.1 µs and the repetition rate of 43.3 kHz. The maximum output power and the maximum pulse energy of the Q-switched pulses are 260.1 µW and 3.97 nJ, respectively. By controlling the DMD, the center wavelength of the Q-switched pulses can be tuned from 1528.2 to 1559.3 nm, with a tuning range of about 31 nm. The fine tunable accuracy can reach 0.08 nm by precisely controlling the DMD. Combining the filtering characteristics of the DMD with the saturable absorption characteristics of nanomaterials, the Q-switched laser with tunable wavelength is realized, which, we believe, is reported for the first time and has broad application prospects.

© 2021 Optical Society of America

Tunable mode-locked erbium-doped fiber laser based on a digital micro-mirror device

Whenhao Wang, Meng Tian, Yan Yang, Yanhua Huang, Cong Li, Guoliang Chen, and Min Lv
Appl. Opt. 59(11) 3440-3446 (2020)

Tunable graphene Q-switched erbium-doped fiber laser with suppressed self-mode locking effect

Da-Peng Zhou, Li Wei, and Wing-Ki Liu
Appl. Opt. 51(14) 2554-2558 (2012)

Tunable noise-like pulse and Q-switched erbium-doped fiber laser

Jing Li, Chuncan Wang, and Peng Wang
Opt. Express 30(4) 4768-4781 (2022)

Nanotube Q-switched low-threshold linear cavity tunable erbium-doped fiber laser

Bo Dong, Chin-Yi Liaw, Jianzhong Hao, and Junhao Hu
Appl. Opt. 49(31) 5989-5992 (2010)

L-band compact Q-switched fiber laser based on a thulium-doped fiber saturable absorber

Chaoyu Xu, Tianye Huang, Zhichao Wu, Lei Han, Jing Zhang, and Dianhong Wang
Appl. Opt. 60(23) 6843-6848 (2021)