Precise frequency measurements of the 2ν3 a1 - ν3 band transitions of methane with comb-referenced infrared-infrared double-resonance

Sasada, Hiroyuki

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https://hdl.handle.net/2142/107699 Copy

Description

Title

Precise frequency measurements of the 2ν3 a1 - ν3 band transitions of methane with comb-referenced infrared-infrared double-resonance

Author(s)

Sasada, Hiroyuki

Contributor(s)

• Okuda, Shoko
• Inaba, Hajime
• Okubo, Sho

Issue Date

2020-06-22

Keyword(s)

Mini-symposium: Precision Spectroscopy for Fundamental Physics

Abstract

We have carried out infrared-infrared double-resonance spectroscopy of the 2\nub{3} A$_{1}$ - \nub{3} band of methane. The \nub{3} band transitions are pumped using a 90.5-THz difference-frequency-generation (DFG) source frequency-controlled with an optical frequency comb (OFC), and ten tetrahedral components of the Q(1) to Q(4) transitions from the pumped levels are observed with a linewidth of 0.8 MHz using another 88.4-THz DFG source. The transition frequencies are determined with an uncertainty of a few tens kilohertz using the OFC.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/107699

Copyright and License Information

Copyright 2020 is held by the Author(s)

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