分子の非線形分光

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  • 霜田 光一
    東京大学理学部物理学教室 理化学研究所マイクロ波物理研究室

書誌事項

タイトル別名
  • Nonlinear Spectroscopy of Molecules
  • ブンシ ノ ヒセンケイ ブンコウ

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説明

The saturation or nonlinear absorption of laser radiation by a molecular transition burns a hole in the molecular velocity distribution. Examples of hole-burning spectroscopy are described. The interaction of molecules with a standing-wave field is calculated to exhibit the inverted Lamb dip. Experimental results on I2, CH4, SF6, NH2D, and H2COare reviewed.<br> Double resonance spectroscopy of molecules has recently been performed with laser radiations. Well-resolved signals of infrared-microwave double resonance have been observed in 14NH3 and in 15NH3 under resonant pumping with an N2O laser. A Zeeman-tuned He-Xe laser has been used to observe infrared-microwave double resonance in H2CO. Pressure dependence of double resonance in H2CO showing higher-order effects due to strong infrared and strong microwave radiations is observed and explained. Double resonance effects on the inverted Lamb dip of H2CO under microwave perturbation are also shown.<br> Other types of nonlinear spectroscopy and their applications are briefly discussed.

収録刊行物

  • 応用物理

    応用物理 41 (5), 438-450, 1972

    公益社団法人 応用物理学会

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