Photoacoustic Cell with Digital Differential Detection
نویسندگان
چکیده
منابع مشابه
A differential photoacoustic imaging system
We describe a differential photoacoustic (PA) imaging system in which almost equal intensity beams modulated 180' out of phase illuminate two regions of a sample in a PA cell. For two regions that are both optically and thermally similar and also homogeneous, the resulting signal is almost zero but if one region has a sub-surface defect this will give an increased signal. This differential sign...
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ژورنال
عنوان ژورنال: International Journal of Thermophysics
سال: 2015
ISSN: 0195-928X,1572-9567
DOI: 10.1007/s10765-014-1832-9