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August 15, 2026Laser & Photonics Review

10‐W Mid‐Infrared Quantum Cascade Laser Fiber‐Beam‐Combining Source

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Authors

KLKaihang LiXiamen UniversityCYChuanfei YaoBeijing Institute of Optoelectronic TechnologyLRLei RenUniversité Fédérale de Toulouse Midi-Pyrénées

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Implication

Experimental study demonstrates a 10.36-W mid-infrared quantum cascade laser fiber-combining system, indicating a viable pathway for high-power mid-infrared laser generation.

Key Points

  • To develop a high-power mid-infrared quantum cascade laser fiber-combining system that overcomes end-facet Fresnel reflection limits to achieve output exceeding 10 W.
  • Constructed a fiber-based beam combining architecture utilizing a low-loss As2S3 fiber combiner.
  • Integrated a self-developed liquid glass at the fiber facets for refractive index matching to minimize Fresnel reflection losses.
  • Achieved a maximum continuous combined output power of 10.361 W in the mid-infrared regime.
  • Recorded an optical transmission efficiency of 73% while improving overall coupling efficiency and operational stability.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a801a0e75c2e31742c867d3https://doi.org/10.1002/lpor.71638
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