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All spliced 36.7 W four wave mixing fiber source near 770 nm
Optics Express
|June 14, 2025
Summary
This study demonstrates a high-brightness visible laser source using four-wave mixing (FWM) in photonic crystal fiber (PCF). The all-fiber system achieves 36.7 W average power, offering efficient wavelength generation for various applications.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- High brightness laser sources are crucial for numerous scientific and industrial applications.
- Generating visible and infrared (IR) wavelengths efficiently remains a key challenge.
- Four-wave mixing (FWM) in nonlinear optical fibers offers a promising route for wavelength generation.
Purpose of the Study:
- To develop a high-power, all-fiber laser source in the visible spectral band.
- To utilize four-wave mixing (FWM) in photonic crystal fiber (PCF) for efficient wavelength conversion.
- To achieve high average power and excellent beam quality in the generated visible light.
Main Methods:
- Employed a custom-designed photonic crystal fiber (PCF).
- Utilized a mode-locked Yb-based fiber laser as the pump source.
- Implemented an all-fiber spliced configuration for the four-wave mixing (FWM) process.
Main Results:
- Achieved an average output power of 36.7 W in the 750-850 nm spectral band.
- Demonstrated a high optical-to-optical conversion efficiency of 45%.
- Obtained excellent beam quality with a beam quality factor M² < 1.3.
Conclusions:
- The demonstrated all-fiber FWM source provides a robust and efficient method for generating high-brightness visible laser light.
- The results highlight the potential of PCF-based FWM for applications requiring high-power visible lasers.
- This technology enables efficient wavelength generation into the visible spectrum with a corresponding infrared idler.
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