Method for observing Doppler-free hot-band transitions |
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| Authors: | F. Matsushima N. Morita Y. Honguh T. Shimizu |
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| Affiliation: | (1) Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, 113 Tokyo, Japan |
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| Abstract: | A novel spectroscopic method for highly sensitive detection of hot-band transitions based on infrared-infrared double resonance in a molecular beam was successfully demonstrated. The intensity of the infrared transitions from a vibrationally excited state is enhanced by two orders of magnitude by resonant laser pumping. The hot-band transitions are identified in connection with the assigned transitions in the fundamental band. Doppler-free spectral lines are observed. The experiment was carried out on the 2v 3←v 3 transitions of CH3F with CO2 laser pumping and probing. |
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| Keywords: | 33.40 34.50 35.20 |
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