Soft tissue ablation by picosecond synchronously-pumped CdSiP 2-based optical parametric oscillator tuned to 6.45 μm

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

*Corresponding author for this work

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

4 Citations (Scopus)
3 Downloads (Pure)

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 AgGaS 2 (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 publicationMedical Laser Applications and Laser-Tissue Interactions V
DOIs
Publication statusPublished - 1 Aug 2011
Externally publishedYes
EventMedical Laser Applications and Laser-Tissue Interactions V 2011 - Munich, Germany
Duration: 24 May 201126 May 2011
Conference number: 5

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8092
ISSN (Print)1605-7422

Conference

ConferenceMedical Laser Applications and Laser-Tissue Interactions V 2011
CountryGermany
CityMunich
Period24/05/1126/05/11

Keywords

  • AgGaS
  • CdSiP
  • synchronously-pumped optical parametric oscillators
  • tissue ablation

Fingerprint Dive into the research topics of 'Soft tissue ablation by picosecond synchronously-pumped CdSiP <sub>2</sub>-based optical parametric oscillator tuned to 6.45 μm'. Together they form a unique fingerprint.

Cite this