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Issue J. Phys. IV France
Volume 04, Number C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
Page(s) C7-11 - C7-14
DOI http://dx.doi.org/10.1051/jp4:1994703

8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-11-C7-14
DOI: 10.1051/jp4:1994703

Description of an interferometric photothermal microscope and its application to the study of semiconductor samples

K. Haupt1, A. Glazov1, H.G. Walther1 and E. Döpel2

1  Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
2  Fraunhofer-Institut für Angewandte Optik und Feinmchanik, Schillerstrasse 1, 07745 Jena, Germany


Abstract
A computerized scanning microscope is described which is equipped with a photothermal sensor. Two types of sensors have been developed both being based on probing the thermal lens above the heating spot by a Mach-Zehnder interferometer. One interferometer was built up from separate optical components while the other one was designed as a microoptical block connected by a gradient index lens and optical fibres with a laser diode and a photodiode. Measurements from structured semiconductors are presented demonstrating the performance of the photothermal microscope.



© EDP Sciences 1994


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