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Proceedings Paper

Silver halide fiber optic radiometer for temperature measurements of irradiated tissue
Author(s): Ophir Eyal; Albert Zur; Ofer Shenfeld M.D.; Mordechai Gilo; Abraham Katzir
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Paper Abstract

A fiber optic radiometer based on a cooled photonic detector was designed and constructed. The radiometer was capable of measuring in real time the temperature of a tissue irradiated with CO2 laser. A silver halide I.R. fiber was used to deliver the CO2 laser radiation needed to irradiate the target, and also to deliver the thermal radiation emitted from the target back to the detector. Two methods of measurements were examined, both of which solve the problem of the reflected CO2 radiation which blinds the detector. A theory for silver halide fiber optic radiometer based on lock in amplifier techniques is presented. Discussion of the radiometer design and construction is given. This work can be a good basis for the subject of measuring, in real time, radiometric signals caused by CO2 laser irradiation. Such a radiometer is of great use, when dealing with Photo Thermal Radiation, P.T.R., with 10.6 micrometers , CO2 laser wave length, which is very useful in medicine and industry.

Paper Details

Date Published: 21 May 1993
PDF: 13 pages
Proc. SPIE 1886, Fiber Optic Sensors in Medical Diagnostics, (21 May 1993); doi: 10.1117/12.144836
Show Author Affiliations
Ophir Eyal, Tel Aviv Univ. (Israel)
Albert Zur, Tel Aviv Univ. (Israel)
Ofer Shenfeld M.D., Tel Aviv Univ. (Israel)
Mordechai Gilo, Tel Aviv Univ. (Israel)
Abraham Katzir, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 1886:
Fiber Optic Sensors in Medical Diagnostics
Fred P. Milanovich, Editor(s)

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