Portable optical actuator for photodynamic therapy

Ivan Charamisinau; Gemunu Happawana; Gary Evans; Arye Rosen; Richard A. Hsi

doi:10.1117/12.514836

15 March 2004 Portable optical actuator for photodynamic therapy

Ivan Charamisinau, Gemunu Happawana, Gary Evans, Arye Rosen, Richard A. Hsi

Proceedings Volume 5261, Smart Medical and Biomedical Sensor Technology; (2004) https://doi.org/10.1117/12.514836
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

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.

Citation Download Citation

Ivan Charamisinau, Gemunu Happawana, Gary Evans, Arye Rosen, and Richard A. Hsi "Portable optical actuator for photodynamic therapy", Proc. SPIE 5261, Smart Medical and Biomedical Sensor Technology, (15 March 2004); https://doi.org/10.1117/12.514836

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