Semiconductor laser insert with uniform illumination for use in photodynamic therapy
Applied Optics, Vol. 44, Issue 24, pp. 5055-5068 (2005)
http://dx.doi.org/10.1364/AO.44.005055
Acrobat PDF (1982 KB)
Abstract
A low-cost semiconductor red laser light delivery system for esophagus cancer treatment is presented. The system is small enough for insertion into the patient's body. Scattering elements with nanoscale particles are used to achieve uniform illumination. The scattering element optimization calculations, with Mie theory, provide scattering and absorption efficiency factors for scattering particles composed of various materials. The possibility of using randomly deformed spheres and composite particles instead of perfect spheres is analyzed using an extension to Mie theory. The measured radiation pattern from a prototype light delivery system fabricated using these design criteria shows reasonable agreement with the theoretically predicted pattern.
© 2005 Optical Society of America
OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(170.5180) Medical optics and biotechnology : Photodynamic therapy
(220.4830) Optical design and fabrication : Systems design
(290.4020) Scattering : Mie theory
(290.5850) Scattering : Scattering, particles
(290.5880) Scattering : Scattering, rough surfaces
Citation
Ivan Charamisinau, Gemunu Happawana, Gary Evans, Arye Rosen, Richard A. Hsi, and David Bour, "Semiconductor laser insert with uniform illumination for use in photodynamic therapy," Appl. Opt. 44, 5055-5068 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-24-5055
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Internal and near-surface electromagnetic fields for an infinite cylinder illuminated by an arbitrary focused beam (JOSAA)
- Exact theory of electromagnetic scattering by a heterogeneous multilayer sphere in the infinite-layer limit: effective-media approach (JOSAA)
- Diffuse radiation intensity propagating through a particulate slab (JOSAA)
- Two-dimensional angular optical scattering for the characterization of airborne microparticles (OL)
- Two-dimensional angular optical scattering patterns as droplets evolve into clusters (OL)
Related Conference Papers
- The Effect of Disorder on Band Gaps in Two-Dimensional Quasi-Periodic Photonic Crystals
- The Effect of Disorder on Band Gaps in Two-Dimensional Quasi-Periodic Photonic Crystals
- Quasiperiodic Photonic Crystals: A Structure between Random and Periodic
- Modeling Advances for Measuring Spheroidal Geometries Using Angle-Resolved Low Coherence Interferometry
- Scattering of a Focused Gaussian Beam by a Dielectric Spheroidal Particle with a Nonconcentric Spherical Core
« Previous Article | Next Article »
OSA is a member of 