发明名称 |
Photo-acoustic spectrometer apparatus |
摘要 |
A photo acoustic detection cell (6) is located within the optical cavity (3) of a cavity enhanced absorption spectroscopy apparatus (3,4,5). When a sample in the cell (6) absorbs radiation from a pulsed radiation beam coupled into the cavity (3) pressure waves are generated that are detected by a microphone (9). A detected signal (10) output by the microphone (9) may be processed to determine a value for the concentration of an absorber in the sample.
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申请公布号 |
US7921693(B2) |
申请公布日期 |
2011.04.12 |
申请号 |
US20060994451 |
申请日期 |
2006.06.30 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN HERPEN MAARTEN MARINUS JOHANNES WILHELM |
分类号 |
G01N21/17 |
主分类号 |
G01N21/17 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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