Photo-acoustic spectrometer apparatus
A photo acoustic detection cell is located within the optical cavity of a cavity enhanced absorption spectroscopy apparatus. When a sample in the cell absorbs radiation from a pulsed radiation beam coupled into the cavity pressure waves are generated that are detected by a microphone. A detected sig...
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| Sprache: | eng |
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| Zusammenfassung: | A photo acoustic detection cell is located within the optical cavity of a cavity enhanced absorption spectroscopy apparatus. When a sample in the cell absorbs radiation from a pulsed radiation beam coupled into the cavity pressure waves are generated that are detected by a microphone. A detected signal output by the microphone may be processed to determine a value for the concentration of an absorber in the sample. |
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