Related Experiment Video
Updated: Jun 20, 2026
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
Narrow-linewidth fiber laser operating at 1.55 microm
Optics Letters
|September 10, 2009
Summary
We fabricated a new fiber laser using erbium-doped silica and a distributed fiber grating. This laser operates at 1.55 micrometers with a narrow output bandwidth, showing improved performance.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Fiber lasers offer compact and robust laser sources.
- Erbium-doped silica fibers are crucial for 1.55 micrometer operation.
- Distributed fiber gratings enable novel laser cavity designs.
Purpose of the Study:
- To fabricate and demonstrate an erbium-doped silica single-mode fiber laser.
- To utilize a distributed fiber grating for feedback in a fiber laser.
- To characterize the laser's performance, including output bandwidth, threshold, and slope efficiency.
Main Methods:
- Fabrication of an erbium(3+)-doped silica single-mode fiber.
- Integration of a distributed fiber grating as the feedback element.
- Characterization of laser output parameters: operating wavelength, bandwidth, threshold power, and slope efficiency.
Main Results:
- Successful fabrication and operation of the Er(3+)-doped fiber laser at 1.55 micrometers.
- Achieved a significantly narrow output bandwidth of 0.04 nm.
- Measured a threshold power of 13 mW and a slope efficiency of 5%.
Conclusions:
- The developed fiber laser design with a distributed fiber grating offers a narrow output bandwidth.
- This configuration is a viable alternative to conventional cavity designs for specific applications.
- Further optimization may enhance the laser's efficiency and performance.
