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Related Experiment Video

Updated: Jul 23, 2025

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

Ultralow-quantum-defect single-frequency fiber laser.

Khawlah AlYahyaei, Xiushan Zhu, Lizhu Li

|July 14, 2023

Summary

This summary is machine-generated.

A novel single-frequency fiber laser was developed, achieving high output power with minimal quantum defect. This research offers a method for high-power fiber laser oscillators, mitigating thermal effects for improved performance.

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Published on: February 25, 2017

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Last Updated: Jul 23, 2025

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

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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Area of Science:

Optics and Photonics
Laser Physics
Materials Science

Background:

Fiber lasers offer advantages in beam quality and robustness.
Achieving high-power, single-frequency operation in fiber lasers remains a challenge.
Thermal effects can degrade laser performance, especially at high power levels.

Purpose of the Study:

To develop a high-power, single-frequency distributed-Bragg-reflector fiber laser.
To investigate the performance of ytterbium-doped phosphate fiber lasers.
To demonstrate an approach for mitigating thermal effects in fiber laser oscillators.

Main Methods:

Utilized a 1.5-cm, 12 wt% ytterbium-doped phosphate fiber.
Employed a 974.5-nm laser diode for pumping.
Characterized laser performance, including output power, polarization extinction ratio (PER), and spectral linewidth.

Main Results:

Achieved a single-frequency fiber laser at 980 nm with a quantum defect < 0.6%.
Obtained linearly polarized, single-longitudinal-mode output with PER ~30 dB and linewidth < 1.8 kHz.
Measured a maximum output power of 275 mW at 620 mW launched pump power.

Conclusions:

Demonstrated a high-power single-frequency fiber laser oscillator.
The developed approach effectively mitigates thermal effects.
This work provides a pathway for advanced fiber laser systems.