Abstract

In this work, we fabricate a saturable absorber based on GeTe with saturation intensity and modulation depth of ${12.6}\;{{\rm MW/cm}^2}$ and 7%, respectively. We obtain stable conventional soliton and stretched soliton mode-locking operation. For the conventional soliton state, the average output power increased from 0.93 to 8.70 mW with the increase of pump power, and the fundamental repetition rate was 7.8351 MHz. Its central wavelength and 3 dB bandwidth were 1564.72 and 4.78 nm, respectively. For the stretched soliton state, when the pump power was increased from 87.4 to 420.3 mW, the average output power increased from 2.05 to 10.46 mW. When the maximum average output power reached 10.46 mW, the maximum average single-pulse energy was 0.86 nJ. The experimental results show that GeTe nanosheets will have broad application potential in the field of ultrafast photonics.

© 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)

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)

Passively mode-locked erbium-doped fiber laser based on a nanodiamond saturable absorber

Aseel A. Shakaty, Jassim K. Hmood, Bushra R. Mahdi, and Sulaiman W. Harun
Appl. Opt. 61(14) 4047-4054 (2022)

Soliton phenomena in normal and anomalous dispersion regions in Er-doped mode-locked fiber lasers based on Cr₂Si₂Te₆ saturable absorbers

Nannan Xu, Shuo Sun, Xinxin Shang, Huanian Zhang, and Dengwang Li
Appl. Opt. 61(31) 9168-9177 (2022)

Germanene saturable absorber for mode-locked operation in an all-fiber laser with multiple dispersion environments

Yunao Han, Weiyu Fan, Xiaoyu Zhao, Lezheng Wang, Yutian He, Yunqi Tang, Huanian Zhang, Guomei Wang, Wenfei Zhang, Caixun Bai, Cheng Lu, and Shenggui Fu
Appl. Opt. 63(3) 865-873 (2024)