TY - GEN
T1 - Soft tissue ablation by picosecond synchronously-pumped CdSiP2-based optical parametric oscillator tuned to 6.45 μm
AU - Hendaoui, Nordine
AU - Mani, Alaa Addin
AU - Kakudji, Ernest
AU - Peremans, André
AU - Silien, Christophe
AU - Bruyninckx, Vincent
AU - Esteban, Adolfo
AU - Ebrahim-Zadeh, Majid
AU - Been, Stefan
AU - Verdaasdonk, Rudolf M.
AU - Schunemann, Peter G.
AU - Zawilski, Kevin T.
AU - Petrov, Valentin
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - AgGaS2
KW - CdSiP2
KW - Synchronously-pumped optical parametric oscillators
KW - Tissue ablation
UR - http://www.scopus.com/inward/record.url?scp=84893599665&partnerID=8YFLogxK
U2 - 10.1364/ecbo.2011.80921r
DO - 10.1364/ecbo.2011.80921r
M3 - Conference contribution
AN - SCOPUS:84893599665
SN - 9780819486837
T3 - Optics InfoBase Conference Papers
BT - European Conference on Biomedical Optics, ECBO 2011
PB - Optical Society of America (OSA)
T2 - European Conference on Biomedical Optics, ECBO 2011
Y2 - 22 May 2011 through 26 May 2011
ER -