Affiliation:
1. Shandong Yunhai Guochuang Cloud Computing Equipment Industry Innovation Co. Ltd.
2. Shangdong AccurDx Diagnosis of Biotech Co. Ltd.
3. Shandong Normal University
4. Shandong University of Technology
Abstract
In this study, germanene-nanosheets (NSs) were synthesized by liquid-phase exfoliation, followed by an experimental investigation into the nonlinear saturable absorption characteristics and morphological structure of germanene. The germanene-NSs were employed as saturable absorbers, exhibiting saturation intensity and modulation depth values of 22.64MW/cm2 and 4.48%, respectively. This demonstrated the feasibility of utilizing germanene-NSs passively mode-locked in an erbium-doped fiber laser (EDFL). By optimizing the cavity length, improvements in the output of EDFL characteristics were achieved, resulting in 883 fs pulses with a maximum average output power of 19.74 mW. The aforementioned experimental outcomes underscore the significant potential of germanene in the realms of ultrafast photonics and nonlinear optics.
Funder
National Natural Science Foundation of China
Shandong Province Science and Technology Small and Medium-Sized Enterprises Innovation Capacity Improvement Project
Shandong Province Major Technological Innovation Project
Natural Science Foundation of Shandong Province
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering