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/2142/111265 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

2021-06-23

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 half-width at half maximum of 0.43 MHz using another 88.5 THz DFG source. The transition frequencies are determined with an uncertainty of 10 kHz using the OFC.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111265

DOI

10.15278/isms.2021.WI12

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