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Related Experiment Video

Updated: May 17, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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 single frequency microfiber laser.

Wei Fan¹, Jiulin Gan, Zhishen Zhang

¹State Key Laboratory Luminescent Materials and Devices and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510640, China.

|October 18, 2012

Summary

This summary is machine-generated.

A novel microfiber ring laser was developed, achieving a 2 kHz linewidth for single-frequency operation. This compact laser utilizes a specialized microfiber as the gain medium, demonstrating potential for advanced optical applications.

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Area of Science:

Photonics and Optical Engineering
Materials Science

Background:

Developing compact, narrow-linewidth lasers is crucial for various photonic applications.
Erbium (Er3+)/Ytterbium (Yb3+) co-doped phosphate glass fibers offer potential as gain media.

Purpose of the Study:

To demonstrate a compact, single-frequency microfiber ring laser with a narrow linewidth.
To investigate the performance of an Er(3+)/Yb(3+) co-doped microfiber as a gain medium in a ring laser configuration.

Main Methods:

Fabrication of a 1.88 μm diameter microfiber from Er(3+)/Yb(3+) co-doped phosphate glass.
Construction of a double-knot microfiber resonator with a total length of 1.75 mm.
Characterization of the laser's output power, wavelength, linewidth, and side-mode suppression ratio.

Main Results:

A single-frequency microfiber ring laser operating at 1536.1 nm was successfully demonstrated.
The laser achieved a narrow linewidth of 2 kHz and a side-mode-suppression ratio exceeding 38 dB.
An output power greater than 0.95 μW was obtained from the compact microfiber laser.

Conclusions:

A compact, narrow-linewidth single-frequency microfiber ring laser was realized using a doped glass microfiber.
The demonstrated laser performance highlights the potential of microfiber-based resonators for high-performance laser applications.