Soft tissue ablation by picosecond synchronously-pumped CdSiP2-based optical parametric oscillator tuned to 6.45 μm

Nordine Hendaoui, Alaa Addin Mani, Ernest Kakudji, André Peremans, Christophe Silien, Vincent Bruyninckx, Adolfo Esteban, Majid Ebrahim-Zadeh, Stefan Been, Rudolf M. Verdaasdonk, Peter G. Schunemann, Kevin T. Zawilski, Valentin Petrov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Optical parametric oscillators (OPOs) are attractive tools for research on tissue ablation upon infrared irradiation. Here, we report on the performance of several mid-infrared nonlinear crystals, namely type I and type II AgGaS2 (AGS) and type I CdSiP2 (CSP), used in synchronously-pumped OPOs tuned to a wavelength of 6.45 μm, coinciding with the amide II absorption band of proteins. CSP-based OPOs clearly exhibit better performance in comparison to AGS: First, the oscillation threshold with CSP is three (five) times lower than type II (type I) AGS. Second, the idler conversion efficiency is more favourable for CSP and allows reaching 27.5 mW of idler average power, while 13 and 6 mW are obtained with type II and type I AGS, respectively. Such performance makes CSP suitable for high power 6.45 μm surgical applications. Preliminary ablation experiments on liver tissues with our CSP-based OPO highlight the promising future of CSP in medical applications.

Original languageEnglish
Title of host publicationEuropean Conference on Biomedical Optics, ECBO 2011
PublisherOptical Society of America (OSA)
ISBN (Print)9780819486837
DOIs
Publication statusPublished - 2011
EventEuropean Conference on Biomedical Optics, ECBO 2011 - Munich, Germany
Duration: 22 May 201126 May 2011

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701

Conference

ConferenceEuropean Conference on Biomedical Optics, ECBO 2011
Country/TerritoryGermany
CityMunich
Period22/05/1126/05/11

Keywords

  • AgGaS2
  • CdSiP2
  • Synchronously-pumped optical parametric oscillators
  • Tissue ablation

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