Flexible delivery of mid-infrared ultrashort pulses using anti-resonant hollow-core fiber

Yuewen Teng; Jiapeng Huang; Wei Lin; Zeqing Li; Yun Zhao; Weiyi Sun; Liming Chen; Xin Jiang; Meng Pang

doi:10.1117/12.3048748

5 December 2024 Flexible delivery of mid-infrared ultrashort pulses using anti-resonant hollow-core fiber

Yuewen Teng, Jiapeng Huang, Wei Lin, Zeqing Li, Yun Zhao, Weiyi Sun, Liming Chen, Xin Jiang, Meng Pang

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134183M (2024) https://doi.org/10.1117/12.3048748
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

We report a high-power, few-cycle mid-infrared (mid-IR) pulse delivery system via the Anti-Resonant Hollow-Core Fiber (AR-HCF). The fiber has a flat transmission window ranging from 1900 nm to 4100 nm, with loss values of ~62 dB/km at 2.8 μm and ~70 dB/km at 3.5 μm. The hollow-core fiber was tightly sealed at both ends using gas units, and in the experiment the hollow-core area of the fiber was vacuumized to avoid additional loss from water absorption of the ambient air. The transmitted mid-IR light, covering a wavelength span of 2.5-3.2 μm, was generated from a three-stage ultrafast fiber laser system, which can deliver few-cycle (~60 fs) pulse train at a repetition rate of 27.9 MHz and an average power of ~235 mW. The coupling efficiency into the hollow-core fiber was measured to be ~86%, and the output average power after 5-meter-long AR-HCF transmission was measured to be 117 mW, giving rise to a total transmission efficiency of ~47%. The few-cycle mid-IR pulse was stretched to ~497 fs duration within the AR-HCF due to waveguide dispersion.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yuewen Teng, Jiapeng Huang, Wei Lin, Zeqing Li, Yun Zhao, Weiyi Sun, Liming Chen, Xin Jiang, and Meng Pang "Flexible delivery of mid-infrared ultrashort pulses using anti-resonant hollow-core fiber", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134183M (5 December 2024); https://doi.org/10.1117/12.3048748

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