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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
Efficient, high-power, and radially polarized fiber laser.
Di Lin1, Kegui Xia, Jianlang Li
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
Optics Letters
|July 3, 2010
Summary
Researchers developed an ytterbium-doped fiber laser producing high-power radially polarized light. Using a photonic crystal grating (PCG), they achieved 2.42 W output power with high efficiency and polarization purity.
Area of Science:
- Laser Physics
- Photonics
- Materials Science
Background:
- Radially polarized light offers unique advantages in various scientific and industrial applications.
- Efficient generation of high-power radially polarized light remains a challenge in laser technology.
Purpose of the Study:
- To demonstrate an efficient method for generating high-power radially polarized light using an ytterbium-doped fiber laser.
- To investigate the performance of a photonic crystal grating (PCG) as a polarization-selective output coupler.
Main Methods:
- An ytterbium-doped fiber laser cavity was designed and constructed.
- A photonic crystal grating (PCG) was integrated as the output coupler to select radial polarization.
- Laser output power, slope efficiency, and polarization purity were measured.
Main Results:
- The fiber laser successfully emitted high-power radially polarized light.
- An output power of 2.42 W was achieved.
- A high slope efficiency of 45.9% and polarization purity of 96% were recorded.
Conclusions:
- The integration of a PCG mirror is a promising approach for efficient high-power radially polarized light generation.
- This method offers significant potential for applications requiring radially polarized beams.
