100 mW broadband tunable mid-infrared frequency comb based on difference frequency generation

Ketai Li; Chuanqing Xia; Yu Wang; Tengfei Wu

doi:10.1117/12.3048467

5 December 2024 100 mW broadband tunable mid-infrared frequency comb based on difference frequency generation

Ketai Li, Chuanqing Xia, Yu Wang, Tengfei Wu

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134181K (2024) https://doi.org/10.1117/12.3048467
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

Difference frequency generation is a common method for generating mid-infrared laser frequency combs. In this study, we demonstrated a simple mid-infrared laser frequency comb system based on difference frequency generation. A tunable mid-infrared frequency comb covering the wavelength range of 3-4.7 μm was generated on a PPLN crystal using a near-infrared laser frequency comb based on NPR mode locking, with a resolution of 113 MHz within a spectral bandwidth of 80 nm. The mid-infrared frequency comb can reach a maximum optical power of 103.1 mW near 3.3μm, and the pump energy conversion efficiency is 4.91%. This result is expected to be used in mid-infrared spectroscopy applications such as trace gas measurement and combustion field measurement.

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

Citation Download Citation

Ketai Li, Chuanqing Xia, Yu Wang, and Tengfei Wu "100 mW broadband tunable mid-infrared frequency comb based on difference frequency generation", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134181K (5 December 2024); https://doi.org/10.1117/12.3048467

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