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Updated: May 17, 2026
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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
976 nm single-frequency distributed Bragg reflector fiber laser.
Xiushan Zhu1, Wei Shi, Jie Zong
1NP Photonics Inc., 9030 S. Rita Road, Tucson, Arizona 85747, USA. xzhu@npphotonics.com
Optics Letters
|October 18, 2012
Summary
A novel single-frequency fiber laser was developed, offering stable, low-noise 976 nm output. This laser serves as a seed for high-power amplifiers, enabling efficient blue-light generation.
Area of Science:
- Fiber laser technology
- Photonics and optical engineering
Background:
- Development of stable, narrow-linewidth lasers is crucial for advanced optical applications.
- High-power fiber lasers are essential for applications like coherent blue-light generation.
Purpose of the Study:
- To develop a single-frequency distributed Bragg reflector (DBR) fiber laser operating at 976 nm.
- To achieve high output power, narrow linewidth, and excellent stability from an all-fiber laser.
Main Methods:
- Utilized a 2 cm highly ytterbium-doped phosphate fiber.
- Incorporated a pair of silica fiber Bragg gratings to form the DBR cavity.
- Characterized output power, linewidth, polarization, relative intensity noise, and wavelength stability.
Main Results:
- Achieved over 100 mW of linearly polarized output power.
- Demonstrated a linewidth narrower than 3 kHz.
- Exhibited ultralow relative intensity noise and high wavelength stability.
Conclusions:
- The developed all-fiber DBR laser provides a high-quality seed source at 976 nm.
- This laser is suitable for pumping high-power narrow-linewidth amplifiers.
- Enables efficient coherent blue-light generation via frequency doubling.
