A novel diode laser system for photodynamic therapy

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

In this paper a novel diode laser system for photodynamic therapy is demonstrated. The system is based on linear spatial filtering and optical phase conjugate feedback from a photorefractive BaTiO3 crystal. The spatial coherence properties of the diode laser are significantly improved. The system provides an almost diffraction limited output which is efficiently coupled into a 50 mum core diameter fiber. The optical power transmitted through the fiber is increased by a factor of six when the feedback is applied to the diode laser. 85 percent of the power from the freely running laser diode is extracted in a high-quality beam and 80 percent of the output power is extracted through the fiber. The power transmitted through tile fiber scales linearly with the power of the laser diode. which means that a laser diode emitting 1.7 W multi-mode radiation would provide 1 W of optical power through a 50 mum core diameter fiber. The system is compact, portable, stable, and easy to operate.

Details

Authors
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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Title of host publicationLASER-TISSUE INTERACTIONS, THERAPEUTIC APPLICATIONS, AND PHOTODYNAMIC THERAPY
EditorsR Birngruber, H van den Bergh
PublisherSPIE
Pages134-139
Volume4433
ISBN (Print)0-8194-4147-3
Publication statusPublished - 2001
Publication categoryResearch
Peer-reviewedYes
EventConference on Laser-Tissue Interactions, Therapeutic Applications, and Photodynamic Therapy, 2001 - Munich, Germany
Duration: 2001 Jun 182001 Jun 21

Publication series

Name
Number33
Volume4433
ISSN (Print)1996-756X
ISSN (Electronic)0277-786X

Conference

ConferenceConference on Laser-Tissue Interactions, Therapeutic Applications, and Photodynamic Therapy, 2001
CountryGermany
CityMunich
Period2001/06/182001/06/21

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