Related Experiment Video
Updated: Jul 12, 2025
08:39
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
9.8K
Active coherent beam combining and beam steering using a spatial mode multiplexer.
Optics Express
|October 20, 2023
Summary
Researchers achieved high-efficiency coherent beam combination of 12 fibers using a Multi-Plane Light Converter. This method also demonstrated novel beam steering capabilities for high-power fiber lasers.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Single lasers face power limitations.
- Coherent beam combination offers a solution for increasing laser power.
Purpose of the Study:
- To coherently combine 12 fiber lasers at 1.03 µm.
- To achieve high combination efficiency and demonstrate beam steering.
Main Methods:
- Utilized a Multi-Plane Light Converter (MPLC).
- Implemented a phase-locking setup for coherent combination.
- Measured overall loss to determine combination efficiency.
Main Results:
- Achieved a combination efficiency of 70% in the fundamental Hermite-Gaussian mode.
- Successfully demonstrated beam steering capability for the first time.
- Coherently combined 12 fibers at 1.03 µm.
Conclusions:
- The MPLC is effective for high-efficiency coherent beam combination.
- The system offers advanced beam steering functionalities.
- This approach overcomes single laser power limitations.
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