Doppler-free Saturated Absorption Spectroscopy Of Ch₄ In The Mid-infrared Region Using A Continuous-wave Optical Parametric Oscillator

Riyadh, S M Shah

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https://hdl.handle.net/2142/111567 Copy

Description

Title

Doppler-free Saturated Absorption Spectroscopy Of Ch₄ In The Mid-infrared Region Using A Continuous-wave Optical Parametric Oscillator

Author(s)

Riyadh, S M Shah

Contributor(s)

• Cheng, Cunfeng
• Liu, Jinjun
• Haase, Brianna Paige
• Haase, Meagan Nicole
• Telfah, Hamzeh

Issue Date

2021-06-25

Keyword(s)

Atmospheric science

Abstract

The fundamentals of XH stretching modes typically lie in the 2,500 – 3,700 cm$^{-1}$ (2.7 - 4.0 $\mu$m) range. Continuous-wave optical parametric oscillators (CW OPOs) enable high-resolution spectroscopy in this region. A Doppler-free saturated absorption spectroscopy apparatus with a high-power, widely tunable CW OPO as the light source has been built in our lab for high-resolution, high-precision spectroscopy of gas-phase molecules. We have obtained the Doppler-free spectrum of the Q branch of the $\nu_3$ band of CH$_4$ in a proof-of-principle experiment. Preliminary results from the experiment will be reported in this talk. A cavity-enhanced two-photon spectroscopy setup using the same CW OPO is under construction.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111567

DOI

10.15278/isms.2021.FE10

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