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Proceedings Paper

Portable optical actuator for photodynamic therapy
Author(s): Ivan Charamisinau; Gemunu Happawana; Gary Evans; Arye Rosen; Richard A. Hsi
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Paper Abstract

This paper presents a low cost semiconductor red laser light delivery system for esophagus cancer treatment. The system is small enough to slide inside the patient’s body and it produces up to 4 Watts of optical power from several semiconductor lasers. Specifically, the paper presents optimized high power 635 nm semiconductor laser array design with testing results. The laser array is more powerful than conventional ridge waveguide and more reliable than the broad area lasers at this wavelength. The design optimization is based on i) thermal analysis using finite element analysis as well as analytical calculations for minimizing laser array temperature, and ii) specially designed scattering elements with nanoparticles, to achieve uniform illumination.

Paper Details

Date Published: 15 March 2004
PDF: 12 pages
Proc. SPIE 5261, Smart Medical and Biomedical Sensor Technology, (15 March 2004); doi: 10.1117/12.514836
Show Author Affiliations
Ivan Charamisinau, Southern Methodist Univ. (United States)
Gemunu Happawana, Southern Methodist Univ. (United States)
Gary Evans, Southern Methodist Univ. (United States)
Arye Rosen, Drexel Univ. (United States)
Richard A. Hsi, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 5261:
Smart Medical and Biomedical Sensor Technology
Brian M. Cullum, Editor(s)

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