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Updated: Sep 23, 2025

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
Masaki Yumoto1,2, Yasushi Kawata3, Satoshi Wada3
1Photonics Control Technology Team, RIKEN Center for Advanced Photonics, RIKEN 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan. myumoto@riken.jp.
This study introduces mid-infrared wavelength-scanning cavity ring-down spectroscopy (WS-CRDS) using an electronically tuned Cr:ZnSe laser for trace gas detection. The method achieved sensitive detection of the refrigerant CH2F2 and water vapor in the mid-IR region.
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