Frequency measurements of the 2ν3A1-ν3 band transitions of methane in comb-referenced infrared-infrared double-resonance spectroscopy

被引：3

作者：

Okubo, Sho ^{[1
]}

Inaba, Hajime ^{[1
]}

Okuda, Shoko ^{[2
]}

Sasada, Hiroyuki ^{[1
,2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan NMIJ, Tsukuba, Ibaraki 3058563, Japan

[2] Keio Univ, Fac Sci & Technol, Dept Phys, Yokohama, Kanagawa 2238522, Japan

来源：

PHYSICAL REVIEW A | 2021年 / 103卷 / 02期

基金：

日本科学技术振兴机构;

关键词：

42;

D O I：

10.1103/PhysRevA.103.022809

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We carry out infrared-infrared double-resonance spectroscopy of the 2 nu(3)A(1)-nu(3) band of methane. Ten transitions of Q(1) to Q(4) are observed with an 88.5-THz difference-frequency-generation (DFG) source, while the lower levels are pumped through the nu(3) band transition by another 90.5-THz DFG source phase-locked to an optical frequency comb (OFC). The transition frequencies are determined using the OFC with an uncertainty of 10 kHz, which is an improvement of 4 orders of magnitude compared with the previous studies.

引用

页数：7

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