Possible two-photon absorption in the near-infrared region observed by cavity ring-down spectroscopy | Zendy

Lei Yang | Zendy; Hong Lin | Zendy; M. D. Plimmer | Zendy; X. J. Feng | Zendy; Hongwei Chu | Zendy; Yongjian Ma | Zendy; Jingting Luo | Zendy; Huibin Sun | Zendy; Jintao Zhang | Zendy

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Possible two-photon absorption in the near-infrared region observed by cavity ring-down spectroscopy

Author(s) -

Lei Yang,

Hong Lin,

M. D. Plimmer,

X. J. Feng,

Hongwei Chu,

Yongjian Ma,

Jingting Luo,

Huibin Sun,

Jintao Zhang

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.409421

Subject(s) - spectroscopy , cavity ring down spectroscopy , absorption (acoustics) , absorption spectroscopy , materials science , infrared spectroscopy , two photon absorption , photon , optics , infrared , resonance (particle physics) , attenuation coefficient , time resolved spectroscopy , atomic physics , physics , laser , quantum mechanics

Two-photon absorption spectra are difficult to observe using direct absorption spectroscopy especially in the near-infrared region. Cavity ring-down spectroscopy is a promising absorption spectroscopy technique which has been widely applied to linear and saturated single-photon absorption spectra. In the present study, we report the observation of a possible two-photon absorption in the near-infrared using cavity ring-down spectroscopy, namely a two-photon resonance of methane. Using an optical frequency comb, the single-photon wavenumber of the double-quantum transition has been determined to be 182 207 682.645 MHz with a standard deviation of 75 kHz.

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