Narrow Lamb Dip of 3.4 μm Band Transition of Methane with Difference Frequency Generation and Enhancement Cavity
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概要
- 論文の詳細を見る
We have developed a sub-Doppler-resolution spectrometer tunable in the 3.4 μm region on the basis of difference frequency generation and an enhancement cavity cell. The spectrometer has allowed us to record the Lamb dips of the $\nu_{3}$ fundamental band of methane even with an IR power level of 3.9 μW, and the linewidth of the Lamb dips can be as narrow as 0.33 MHz. The spectrometer is also so sensitive that a Lamb dip of a less abundant isotopomer, 13CH4, has been successfully observed.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-04-15
著者
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Yoshida Naohiro
Departement Of Cardiology Kanazawa Cardiovascular Hospital
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Gao Xiaoming
Department Of Physics Faculty Of Science And Technology Keio University
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Anzai Kenji
Department Of Physics Faculty Of Science And Technology Keio University
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Sasada Hiroyuki
Department Of Physics Faculty Of Science And Technology Keio University
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Yoshida Naohiro
Department of Environmental Science and Technology, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8502, Japan
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Gao Xiaoming
Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Sasada Hiroyuki
Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Anzai Kenji
Department of Chemical Engineering, Shizuoka University
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