Pengesan Optik, Piezoelektrik-fotoakustik
An optical detector based on piezoelectric detection of the photo acoustic effect in an absorbing metal plate is reported. Such a detector has been used in an experiment for measuring a Gaussian laser beam diameter using the knife-edge method. The responsivity of the detector varied from 4.05J.LV...
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| Main Authors: | , |
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| 格式: | Article |
| 语言: | English Malay |
| 出版: |
Universiti Putra Malaysia Press
1993
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| 在线阅读: | http://psasir.upm.edu.my/id/eprint/3086/1/Pengesan_Optik%2C_Piezoelektrik-fotoakustik.pdf http://psasir.upm.edu.my/id/eprint/3086/ |
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| 总结: | An optical detector based on piezoelectric detection of the photo acoustic effect
in an absorbing metal plate is reported. Such a detector has been used in an
experiment for measuring a Gaussian laser beam diameter using the knife-edge
method. The responsivity of the detector varied from 4.05J.LV/mW at 68Hz to
1.25J.LV/mW at 211Hz. The Gaussian laser beam diameter obtained from the
experimental data is (0.88 ± 0.02)mm and this value is comparable with the
value stated in the laser specification note. |
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