Related Experiment Video
Updated: Aug 5, 2025
08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
7.6K
Low-Threshold, Multiple High-Order Harmonics Fiber Laser Employing Cr2Si2Te6 Saturable Absorber
Nannan Xu1,2, Xinxin Shang1,2, Shuo Sun3
1Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
Nanomaterials (Basel, Switzerland)
|March 29, 2023
Summary
Researchers developed a low-threshold mode-locked fiber laser using chromium silicide telluride (Cr2Si2Te6) saturable absorbers. This economical method enhances fiber laser performance and explores harmonic mode locking.
Area of Science:
- Nonlinear optics
- Materials science
- Laser physics
Background:
- Two-dimensional (2D) materials show promise for nonlinear optics in fiber lasers.
- Challenges include reducing the start-up threshold and improving the damage threshold of 2D material-based fiber lasers.
Purpose of the Study:
- To demonstrate a low-threshold mode-locked fiber laser using a novel saturable absorber.
- To investigate the potential of Cr2Si2Te6 as an optical modulator for advanced laser operations.
Main Methods:
- Liquid-phase exfoliation method used to prepare Cr2Si2Te6 saturable absorbers (SAs).
- Fabrication and characterization of a fiber laser incorporating the Cr2Si2Te6 SA.
- Experimental recording of mode-locked operations, including high-order harmonics.
Main Results:
- A fiber laser with a low threshold of 15.1 mW was successfully demonstrated.
- Cr2Si2Te6 SAs exhibited low insertion loss and low saturation intensity.
- Multiple high-order harmonic mode-locked operations were achieved, up to the 49th order (617.6 MHz).
Conclusions:
- Cr2Si2Te6 is a cost-effective material for producing high-performance SAs.
- The demonstrated fiber laser showcases excellent potential for soliton dynamics and harmonic mode locking.
- This work offers a viable approach for advancing 2D material applications in fiber lasers.
