Silver halide fiber optic radiometer for temperature measurements of irradiated tissue

Ophir Eyal; Albert Zur; Ofer Shenfeld M.D.; Mordechai Gilo; Abraham Katzir

doi:10.1117/12.144836

21 May 1993 Silver halide fiber optic radiometer for temperature measurements of irradiated tissue

Ophir Eyal, Albert Zur, Ofer Shenfeld M.D., Mordechai Gilo, Abraham Katzir

Proceedings Volume 1886, Fiber Optic Sensors in Medical Diagnostics; (1993) https://doi.org/10.1117/12.144836
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Ophir Eyal, Albert Zur, Ofer Shenfeld M.D., Mordechai Gilo, and Abraham Katzir "Silver halide fiber optic radiometer for temperature measurements of irradiated tissue", Proc. SPIE 1886, Fiber Optic Sensors in Medical Diagnostics, (21 May 1993); https://doi.org/10.1117/12.144836

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