Related Experiment Video
Updated: May 7, 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
7.0K
20 W continuous-wave cladding-pumped Nd-doped fiber laser at 910 nm
Optics Letters
|October 10, 2013
Summary
Researchers achieved a record 20 W output from a 910 nm double-clad fiber laser. This high power was enabled by a specific fiber design and pump source, leading to efficient laser conversion.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Double-clad fiber lasers are crucial for high-power applications.
- Achieving efficient laser emission at 910 nm presents challenges due to competing wavelengths and three-level laser schemes.
Purpose of the Study:
- To demonstrate a high-power double-clad fiber laser operating at 910 nm.
- To investigate methods for enhancing laser conversion efficiency and preventing parasitic lasing.
Main Methods:
- Utilized a double-clad fiber with a small inner cladding-to-core diameter ratio.
- Employed a high-brightness 808 nm pump source.
- Incorporated resonant fiber Bragg gratings (FBGs) at 910 nm to suppress 1060 nm lasing.
- Configured a master oscillator power-amplifier (MOPA) system.
Main Results:
- Achieved a record continuous-wave (CW) output power of 20 W at 910 nm.
- Attained a laser conversion efficiency of 44%.
- Successfully suppressed lasing at the competing 1060 nm wavelength using FBGs.
- Demonstrated a MOPA system delivering 14.8 W amplified power at 914 nm.
Conclusions:
- The combination of optimized fiber design, high-brightness pumping, and resonant FBGs enables efficient 910 nm fiber laser operation.
- Record power levels and high conversion efficiencies are achievable for 910 nm fiber lasers.
- The developed MOPA configuration shows promise for further power scaling in this wavelength range.
