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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 18, Iss. 7 — Jul. 1, 2001
  • pp: 1019–1030

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

Chikako Ishibashi, Ryuji Saneto, and Hiroyuki Sasada  »View Author Affiliations

JOSA B, Vol. 18, Issue 7, pp. 1019-1030 (2001)

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Infrared (ir) radio-frequency (rf) double-resonance spectroscopy was carried out on the vibrational-overtone band of methyl iodide molecules (CH<sub>3</sub>I). An optical Fabry-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, quantum-interference 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.

© 2001 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.3690) Atomic and molecular physics : Line shapes and shifts
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6410) Spectroscopy : Spectroscopy, multiphoton
(300.6460) Spectroscopy : Spectroscopy, saturation

Chikako Ishibashi, Ryuji Saneto, and Hiroyuki Sasada, "Infrared radio-frequency double-resonance spectroscopy of molecular vibrational-overtone bands using a Fabry–Perot cavity-absorption cell," J. Opt. Soc. Am. B 18, 1019-1030 (2001)

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