Abstract

In this paper, we propose nanodiamond (ND) material as a saturable absorber (SA) to generate short pulses from a mode-locked erbium-doped fiber laser (EDFL). The ND-SA is fabricated by the drop-casting method using polyvinyledenedifluoride–trifluoroethylene as a host polymer and methyl ethel ketone as a solvent liquid. The SA, which possesses 20% ND concentration, has a 5.46% modulation depth with ${{2000}}\;{\rm{MW/c}}{{\rm{m}}^2}$ saturation intensity. Sequentially, the performance of the EDFL is investigated after integrating an ND-SA within the laser ring. The results reveal that the presented ND-SAs produce stable ultrashort laser pulses. Moreover, the fabricated ND film is a promising solid film for many photonic schemes. The proposed mode-locked EDFL-based ND-SA starts a mode-locking operation at a pumped power of 116 mW. The generated mode-locked pulses have a pulse duration of 0.84 ps, a repetition rate of 1.93 MHz, and a power of 0.517 mW, at a pumped power of 187 mW. Finally, to the best of our knowledge, this is the first time that the ND-SA has been used as a mode locker within the EDFL as a thin film and with the suggested fabrication method.

© 2022 Optica Publishing Group

Passively mode-locked Er-doped fiber laser based on a ferromagnetic insulator Cr₂Si₂Te₆ as a saturable absorber

Fuhao Yang, Shuo Sun, Si Chen, Yanjuan Wang, Zhiqi Sui, Mingxiao Zhu, Zhifeng Hong, Jianghao Xu, Shouqian Tang, Cheng Lu, Guomei Wang, Shenggui Fu, Xiaohan Chen, Huanian Zhang, and Wenfei Zhang
Appl. Opt. 61(4) 898-903 (2022)

Passively mode-locked fiber laser based on GeTe as a saturable absorber

Qiuyan Sheng, Shouqian Tang, Faming Ye, Yanjuan Wang, Si Chen, Caixun Bai, Cheng Lu, Huanian Zhang, Shenggui Fu, Guomei Wang, and Wenfei Zhang
Appl. Opt. 61(32) 9379-9385 (2022)

Nanosecond soliton pulse generation by mode-locked erbium-doped fiber laser using single-walled carbon-nanotube-based saturable absorber

Mohd Afiq Ismail, Sulaiman Wadi Harun, Nurul Rozullyah Zulkepely, Roslan Md Nor, Fauzan Ahmad, and Harith Ahmad
Appl. Opt. 51(36) 8621-8624 (2012)

Passively Q-switched erbium-doped fiber laser utilizing tungsten oxide as a saturable absorber

A. Nady, M. Salhi, and S. W. Harun
Appl. Opt. 58(36) 9768-9772 (2019)

Third-order harmonic mode-locked and Q-switched Er-doped fiber laser based on a Cr₂Ge₂Te₆ saturable absorber

Xueyao Liu, Nannan Xu, Xinxin Shang, Lin Zhao, Xueyuan Dong, Chao Liu, Huanian Zhang, and Dengwang Li
Appl. Opt. 61(13) 3884-3892 (2022)