Fibre optic position sensitive detection of photothermal deflection

The use of an optical fibre as a position-sensitive detector in the photothermal deflection technique for thermal characterisation of solids is demonstrated. To validate the sensitivity and accuracy of the set-up, the thermal diffusivity of an n-type indium phosphide wafer is measured and compared w...

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Veröffentlicht in:	Applied physics. B, Lasers and optics Lasers and optics, 2003-08, Vol.77 (1), p.77-80
1. Verfasser:	GEORGE, N. A
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Deflection Detectors Diffusion in solids Exact sciences and technology Fiber optics Fiber-optic instruments Indium phosphides Instruments, apparatus, components and techniques common to several branches of physics and astronomy Lasers Optical fibers Optical instruments, equipment and techniques Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Physics Thermal diffusivity Thermooptical and photothermal effects Transport properties of condensed matter (nonelectronic) Wafers
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Beschreibung
Zusammenfassung:	The use of an optical fibre as a position-sensitive detector in the photothermal deflection technique for thermal characterisation of solids is demonstrated. To validate the sensitivity and accuracy of the set-up, the thermal diffusivity of an n-type indium phosphide wafer is measured and compared with the literature values. The results are very promising.
ISSN:	0946-2171 1432-0649
DOI:	10.1007/s00340-003-1117-7