Thermal grating effects in infrared dege
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A. Dreizler; T. Dreier; J. Wolfrum
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Article
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1995
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Elsevier Science
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English
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Degenerate four-wave mixing (DFWM) in the infrared region using a single mode CO 2 laser has been used for the detection of ethylene, sulfur hexafluoride and mixtures of these gases with nitrogen and argon in the pressure range up to one atmosphere. The investigations showed that for the low pressur