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Optical Third Harmonic Generation in Methane |
WANG Peng-qian;XIE Xiao-bo;SUN Tao-heng |
Department of Physics, Peking University, Beijing 100871 |
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Cite this article: |
WANG Peng-qian, XIE Xiao-bo, SUN Tao-heng 1997 Chin. Phys. Lett. 14 740-743 |
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Abstract Methane has been used as a nonlinear optical medium to produce tunable coherent vacuum ultraviolet and extreme ultraviolet radiation. A vibrational structure with a vibrational frequency of 820cm-1 was observed in a highly resolved third harmonic spectrum. This proved that third harmonic generation is an effective method to probe the higher excited states of molecular gases.
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Keywords:
42.65.Ky
33.20.Ni
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Published: 01 October 1997
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PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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33.20.Ni
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(Vacuum ultraviolet spectra)
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