A1-A2 splitting of CH3D

Masashi Abe; Hideyuki Sera; Hiroyuki Sasada

doi:10.1016/j.jms.2015.04.003

A₁-A₂ splitting of CH₃D

Masashi Abe, Hideyuki Sera, Hiroyuki Sasada

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Sub-Doppler resolution spectroscopy of CH₃D has been carried out from 88.6 to 93.1 THz. Thirty transitions of the ν₁ and ν₄ bands from the low-J and K = 3 levels are observed, and the A₁-A₂ splitting is resolved for twenty-three of the thirty transitions. The absolute frequencies are determined with a typical uncertainty of 4 kHz. The effective A₁-A₂ splitting constant of the K = 3 levels is 2h_3,_v₌₀ = (1.5641 ± 0.0026) Hz for the ground vibrational state, and those of the K = 3 levels for the v₁ = 1 state and of the (K = 2, l = -1) and (K = 4, l = +1) levels for the v₄ = 1 state are also determined.

Original language	English
Pages (from-to)	90-96
Number of pages	7
Journal	Journal of Molecular Spectroscopy
Volume	312
DOIs	https://doi.org/10.1016/j.jms.2015.04.003
Publication status	Published - 2015 Jun 1

Keywords

A-A splitting
Difference frequency generation
Isotope methane
Mid-infrared
Optical frequency comb
Sub-Doppler resolution

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.jms.2015.04.003

Cite this

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title = "A1-A2 splitting of CH3D",

abstract = "Sub-Doppler resolution spectroscopy of CH3D has been carried out from 88.6 to 93.1 THz. Thirty transitions of the ν1 and ν4 bands from the low-J and K = 3 levels are observed, and the A1-A2 splitting is resolved for twenty-three of the thirty transitions. The absolute frequencies are determined with a typical uncertainty of 4 kHz. The effective A1-A2 splitting constant of the K = 3 levels is 2h3,v=0 = (1.5641 ± 0.0026) Hz for the ground vibrational state, and those of the K = 3 levels for the v1 = 1 state and of the (K = 2, l = -1) and (K = 4, l = +1) levels for the v4 = 1 state are also determined.",

keywords = "A-A splitting, Difference frequency generation, Isotope methane, Mid-infrared, Optical frequency comb, Sub-Doppler resolution",

author = "Masashi Abe and Hideyuki Sera and Hiroyuki Sasada",

note = "Funding Information: One of the authors (H. Sera) thanks Dr. Kana Iwakuni of Keio University and Drs Sho Okubo and Hajime Inaba of Advanced Institute of Standard and Technology for their help in the construction of a novel optical frequency comb. We are grateful for a Grand-in-Aid for Scientific Research (A) and the Photon Frontier Network Program of the Ministry of Education, Culture, Sports, Science and Technology, Japan . This research is partially supported by Exploratory Research for Advanced Technology Intelligent Optical Synthesizer program of the Japan Science and Technology Agency, JST . Publisher Copyright: {\textcopyright} 2015 Elsevier Inc. All rights reserved.",

year = "2015",

month = jun,

day = "1",

doi = "10.1016/j.jms.2015.04.003",

language = "English",

volume = "312",

pages = "90--96",

journal = "Journal of Molecular Spectroscopy",

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AU - Abe, Masashi

AU - Sera, Hideyuki

AU - Sasada, Hiroyuki

N1 - Funding Information: One of the authors (H. Sera) thanks Dr. Kana Iwakuni of Keio University and Drs Sho Okubo and Hajime Inaba of Advanced Institute of Standard and Technology for their help in the construction of a novel optical frequency comb. We are grateful for a Grand-in-Aid for Scientific Research (A) and the Photon Frontier Network Program of the Ministry of Education, Culture, Sports, Science and Technology, Japan . This research is partially supported by Exploratory Research for Advanced Technology Intelligent Optical Synthesizer program of the Japan Science and Technology Agency, JST . Publisher Copyright: © 2015 Elsevier Inc. All rights reserved.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Sub-Doppler resolution spectroscopy of CH3D has been carried out from 88.6 to 93.1 THz. Thirty transitions of the ν1 and ν4 bands from the low-J and K = 3 levels are observed, and the A1-A2 splitting is resolved for twenty-three of the thirty transitions. The absolute frequencies are determined with a typical uncertainty of 4 kHz. The effective A1-A2 splitting constant of the K = 3 levels is 2h3,v=0 = (1.5641 ± 0.0026) Hz for the ground vibrational state, and those of the K = 3 levels for the v1 = 1 state and of the (K = 2, l = -1) and (K = 4, l = +1) levels for the v4 = 1 state are also determined.

AB - Sub-Doppler resolution spectroscopy of CH3D has been carried out from 88.6 to 93.1 THz. Thirty transitions of the ν1 and ν4 bands from the low-J and K = 3 levels are observed, and the A1-A2 splitting is resolved for twenty-three of the thirty transitions. The absolute frequencies are determined with a typical uncertainty of 4 kHz. The effective A1-A2 splitting constant of the K = 3 levels is 2h3,v=0 = (1.5641 ± 0.0026) Hz for the ground vibrational state, and those of the K = 3 levels for the v1 = 1 state and of the (K = 2, l = -1) and (K = 4, l = +1) levels for the v4 = 1 state are also determined.

KW - A-A splitting

KW - Difference frequency generation

KW - Isotope methane

KW - Mid-infrared

KW - Optical frequency comb

KW - Sub-Doppler resolution

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