Observation of rotational population transfer effect for an HF chemical laser |
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Authors: | M. Obara N. Nishida M. Morimoto T. Fujioka |
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Affiliation: | Department of Electrical Engineering, Faculty of Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi, 223 Japan |
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Abstract: | When a CO2 gas absorption cell was placed within the optical cavity of a low pressure pulsed HF laser, the specific vibration- rotation line of the HF laser disappeared, which influenced both the intensity and pulse duration of the neighbouring lines. This behavior strongly depends upon the rotational population transfer in HF. By measuring the time response of this behavior, it was found that the rate constant for the rotational population transfer was in the range of 107 s-1 torr-1 for the SF6/H2 lasing mixture. |
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