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The photodissociation cage effect in van der Waals complexes: Fluorescence spectra of I2 B(3Pi0+u) from the hindered photodissociation of I2Ar at 488 nm
The BX fluorescence from I2 produced in the hindered photodissociation of I2Ar at 488 nm has been resolved. The spectra show several vibrational progressions with low rotational energy, the most promi...
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Selective vibrational excitation of formaldehyde X-tilde 1A1 by stimulated emission pumping

J. Chem. Phys. 77, 573 (1982); doi:10.1063/1.443596

Issue Date: 1 July 1982

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D. E. Reisner, P. H. Vaccaro, C. Kittrell, R. W. Field, J. L. Kinsey, and H.-L. Dai
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Stimulated emission pumping (SEP), an optical–optical double resonance scheme whereby highly excited rotation-vibration levels of the electronic ground state may be selecetively populated, is applied to formaldehyde. This method is free of important limitations of other schemes such as IR multiphoton, high overtone, and stimuated Raman pumping. We report fully resolved, assigned, and sub-Doppler (laser linewidth limited to 0.04 cm−1) SEP spectra in the H2CO Ã 1A[prime][prime]–X-tilde 1A1 4<sub>4</sub><sup>1</sup> and 2<sub>3</sub><sup>0</sup>4<sub>0</sub><sup>1</sup> bands. More than 0.02% of the total thermal population in the irradiation volume was excited into a single rotation-vibration level at least 4600 cm−1 above the vibrationless level in the electronic ground state. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
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KEYWORDS and PACS

Keywords
PACS
  • 33.40.-e
    Molecular spectra and interactions of molecules with photons Double resonances and other multiple resonances
  • 35.20.Pa
    Experimentally derived information on atoms and molecules; instrumentation and techniques Molecules Rotation, vibration, and vibration-rotation constants
  • 33.20.Lg
    Molecular spectra and interactions of molecules with photons Molecular spectra, grouped by wavelength ranges Ultraviolet spectra
  • 35.80.+s
    Experimentally derived information on atoms and molecules; instrumentation and techniques Atomic and molecular measurement and techniques
  • YEAR: 1982

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
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REFERENCES (18)
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  1. Photoselective Chemistry, Advances in Chemical Physics, edited by J. Jortner, R. D. Levine, and S. A. Rice (Wiley, New York, 1981), Vol. XLVII.
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    8. (b) D. A. Ramsay and S. M. Till, Can. J. Phys. 57, 1224 (1979).
  8. Rotational assignments were guided by tables of rotational lines provided by D. A. Ramsay.
  9. K. Shibuya, R. A. Harger, and E. K. C. Lee, J. Chem. Phys. 69, 751 (1978).
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  12. J. Cariou and P. Luc, Atlas du Spectre de Absorpllon de la Molecule de Tellure (Editions du C.N.R.S., Paris, 1980).
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  16. H.-L. Dai and P. H. Vaccaro (unpublished).
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  18. C. Kittrell and D. E. Reisner (unpublished).

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