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Efficient single-mode 976 nm amplifier based on a 45 micron outer diameter Yb-doped fiber
Optics Letters
|August 1, 2020
Summary
Researchers developed a new Ytterbium-doped fiber for high-power fiber amplifiers. This novel fiber achieved 13 W output power, demonstrating its potential for efficient laser applications.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Development of high-power fiber lasers is crucial for various applications.
- Yb-doped fibers are key components in many fiber laser systems.
Purpose of the Study:
- To introduce a novel single-mode Yb-doped fiber with specific core and cladding dimensions.
- To demonstrate the performance of an all-fiber high-power amplifier based on this new fiber.
Main Methods:
- Fabrication of a novel single-mode Yb-doped fiber (14 µm core/45 µm cladding).
- Construction of a 976 nm all-fiber high-power amplifier using the fabricated fiber.
- Utilized a 10-mm fiber taper for pump light launch with a glass-air interface for high NA pump guidance.
Main Results:
- Achieved 13 W of output power, limited by available pump power.
- Demonstrated a 31% slope efficiency for the amplifier.
Conclusions:
- The novel Yb-doped fiber enables efficient high-power amplification.
- The developed amplifier design shows promise for future high-power laser systems.
