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Updated: Oct 17, 2025
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
22.0K
>30 W vortex LG01 or HG10 laser using a mode transforming output coupler
Optics Express
|October 7, 2021
Summary
Researchers achieved record 31.3 W vortex laser power using an interferometric output coupler. This breakthrough enables high-power applications in material processing, optical manipulation, and communications.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- High-power vortex light is crucial for advanced applications but has been limited by low power output.
- Existing methods struggle to achieve the necessary power levels for widespread adoption.
Purpose of the Study:
- To demonstrate a record high-power vortex laser output.
- To develop a robust and efficient method for generating vortex beams directly from a laser.
Main Methods:
- Utilized an interferometric mode transforming output coupler to convert a fundamental mode Nd:YVO4 laser into a LG01 vortex output.
- Employed Q-switching at pulse rates up to 600 kHz.
- Investigated varying output coupling transmissions and compared with theoretical models.
Main Results:
- Achieved a record vortex average power of 31.3 W with 95.2% LG01 modal purity.
- Demonstrated >30W laser power in a high-quality HG10 mode.
- Obtained a high slope efficiency of 62.5%.
Conclusions:
- The interferometric output coupler is a suitable method for creating robust, high-power, turn-key vortex lasers.
- The demonstrated technology offers high efficiency, high modal purity, and scalable power and pulse rate.
- This advancement paves the way for enhanced applications in material processing, optical manipulation, and communications.
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