Infrared radiometry using silver halide fibers and a cooled photonic   detector

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

doi:10.1117/12.153196

1 February 1994 Infrared radiometry using silver halide fibers and a cooled photonic detector

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

Author Affiliations +

Optical Engineering, Vol. 33, Issue 2, (February 1994). https://doi.org/10.1117/12.153196

Abstract

A fiber optic radiometer based on a cooled photonic detector was designed and constructed. The radiometer is capable of measuring in real time the temperature of tissue irradiated with a CO₂ laser. A silver halide IR fiber is used to deliver the CO₂ laser radiation to 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 detector blinding by reflected CO₂ radiation. A theory of operation for this silver halide fiber optic radiometer, based on lock-in amplifier techniques, is presented. A short discussion of the radiometer design and construction is given. This work forms a basis for the subject of measuring, in real time, fast radiometric signals caused by CO₂ laser irradiation. Such a radiometer is very useful when dealing with pulsed photo thermal radiation with 10.6-μm CO₂ laser radiation. This technique is very useful in medicine and industry.

Citation Download Citation

Ophir Eyal, Albert Zur, Ofer Shenfeld M.D., Mordechai Gilo, and Abraham Katzir "Infrared radiometry using silver halide fibers and a cooled photonic detector," Optical Engineering 33(2), (1 February 1994). https://doi.org/10.1117/12.153196

Published: 1 February 1994

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