TY - JOUR
T1 - A1-A2 splitting of CH3D
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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U2 - 10.1016/j.jms.2015.04.003
DO - 10.1016/j.jms.2015.04.003
M3 - Article
AN - SCOPUS:84928379841
SN - 0022-2852
VL - 312
SP - 90
EP - 96
JO - Journal of Molecular Spectroscopy
JF - Journal of Molecular Spectroscopy
ER -