Infrared-Microwave Double Resonance Spectroscopy of Tetrahedral Molecules Using a Tunable Diode Laser

  • M. Takami
Part of the Springer Series in Optical Sciences book series (SSOS, volume 30)


A tetrahedral molecule has a vibrationally induced dipole moment in its triply degenerate vibrational state [1,2]. This dipole moment allows a pure rotational transition among the rotational manifold of the triply degenerate vibration. Such transitions have been observed in CH4[3], SiH4[4] and GeH4[5] by infrared-microwave double resonance. Because the lasers used in these previous works could not be tuned over a wide frequency range, however, the experiments had to rely upon accidental coincidences of the molecular absorption lines and laser frequencies.


Infrared Absorption Double Resonance Tunable Diode Laser Induce Dipole Moment Accidental Coincidence 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  • M. Takami
    • 1
  1. 1.The Institute of Physical and Chemical Research WakoSaitama 351Japan

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