| Issue |
J. Phys. IV France
Volume 04, Number C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique |
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|---|---|---|
| Page(s) | C7-79 - C7-82 | |
| DOI | https://doi.org/10.1051/jp4:1994720 | |
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-79-C7-82
DOI: 10.1051/jp4:1994720
1 Department of Electrical Engineering and Electronics, Faculty of Engineering, Osaka Sangyo University, Daito, Osaka, Japan
© EDP Sciences 1994
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-79-C7-82
DOI: 10.1051/jp4:1994720
A new beam deflection angle amplification technique for mirage detection
A. Yarai1, Y. Fukunaga1, K. Sakamoto1 and T. Nakanishi11 Department of Electrical Engineering and Electronics, Faculty of Engineering, Osaka Sangyo University, Daito, Osaka, Japan
Abstract
A new technique has been developed for amplification of the photothermal beam deflection angle for mirage detection. This technique, based on a very simple operating principle, uses a cylindrical reflection mirror. The use of a new amplifier provided a signal-to-noise ratio approximately 10 times that obtained without the amplifier for equipment of the same size. By using the new amplifier, a mirage signal was obtained when a transistor array processed on a silicon wafer was measured.
© EDP Sciences 1994