Infrared radio-frequency double-resonance spectroscopy of molecular vibrational-overtone bands using a Fabry-Perot cavity-absorption cell

Chikako Ishibashi, Ryuji Saneto, Hiroyuki Sasada

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Infrared (ir) radio-frequency (rf) double-resonance spectroscopy was carried out on the vibrational-overtone band of methyl iodide molecules (CH 3I). An optical Pabry-Perot cavity was employed as an absorption cell to record saturated ir spectral lines even by a small-power extended-cavity diode laser with a high sensitivity and a wide tunability in the presence of a rf field. These features allowed investigation of molecules strongly coupled with monochromatic and bichromatic rf fields, or dressed molecules, at various rf power levels and detuning frequencies for a variety of ir and rf transitions. At appropriate energy-level schemes, quantuminterference effects were observed. All resultant spectra showed good agreement with dressed-state theoretical calculations, indicating that the present spectrometer is valid for precise investigation of dressed molecules.

Original languageEnglish
Pages (from-to)1019-1030
Number of pages12
JournalJournal of the Optical Society of America B: Optical Physics
Volume18
Issue number7
DOIs
Publication statusPublished - 2001 Jul

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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