TY - GEN
T1 - Versatile supercontinuum generation by using χ(2) and χ(3) nonlinearities in PPLN crystal for direct multiplex CARS measurement
AU - Wehbi, Sahar
AU - Mansuryan, Tigran
AU - Jauberteau, Raphael
AU - Tonello, Alessandro
AU - Krupa, Katarzyna
AU - Wabnitz, Stefan
AU - Kano, Hideaki
AU - Leproux, Philippe
AU - Vergnole, Sebastien
AU - Couderc, Vincent
N1 - Funding Information:
K. K. acknowledges the Foundation of Polish Science (TEAM-NET project No. POIR.04.04.00-00-16ED/18-00). S.W. was supported by the H2020 European Research Council (740355, 874596); V.C. acknowledge the financial support provided by: the French ANR through the “TRAFIC, project: ANR-18-CE080016-01”; the CILAS Company (ArianeGroup) through the shared X-LAS laboratory; the “Region Nouvelle Aquitaine” through the projects F2MH, the National Research Agency under the Investments for the future program with the reference ANR-10-LABX-0074-01 Sigma-LIM.
Publisher Copyright:
© 2021 SPIE.
PY - 2021
Y1 - 2021
N2 - In this study, we report on experiments of spatio-temporal nonlinear frequency conversion in a periodically poled Lithium Niobate (PPLN) crystal designed for second-harmonic generation (SHG). We demonstrated a novel supercontinuum source based on the mixing of second and third-order nonlinearities. We could adjust the (χ(2), χ(3)) nonlinearities by controlling the input laser polarization orientation, the pulse duration and the PPLN crystal temperature. We obtained an ultra-broadband spectrum, ranging from visible to infrared domains, by pumping a 20-mm-long PPLN crystal with a 3 ps pulse at 1030 nm. This broadband pulse was used to achieve direct multiplex Coherent Anti-Stokes Raman Scattering (M-CARS) imaging, without the need for any optical delay line to temporally synchronize the pump and the Stokes waves. Simultaneous vibrational signatures ranging from -3200 cm-1 to -500 cm-1 were obtained. Several filters were placed on the broadband supercontinuum path, to shape the output spectrum between 1030 nm and 1650 nm, before sending it into the microscope. The output spectral analysis allows for the demonstration of multimodal imaging, by using SHG, M-CARS and multiphoton fluorescence processes.
AB - In this study, we report on experiments of spatio-temporal nonlinear frequency conversion in a periodically poled Lithium Niobate (PPLN) crystal designed for second-harmonic generation (SHG). We demonstrated a novel supercontinuum source based on the mixing of second and third-order nonlinearities. We could adjust the (χ(2), χ(3)) nonlinearities by controlling the input laser polarization orientation, the pulse duration and the PPLN crystal temperature. We obtained an ultra-broadband spectrum, ranging from visible to infrared domains, by pumping a 20-mm-long PPLN crystal with a 3 ps pulse at 1030 nm. This broadband pulse was used to achieve direct multiplex Coherent Anti-Stokes Raman Scattering (M-CARS) imaging, without the need for any optical delay line to temporally synchronize the pump and the Stokes waves. Simultaneous vibrational signatures ranging from -3200 cm-1 to -500 cm-1 were obtained. Several filters were placed on the broadband supercontinuum path, to shape the output spectrum between 1030 nm and 1650 nm, before sending it into the microscope. The output spectral analysis allows for the demonstration of multimodal imaging, by using SHG, M-CARS and multiphoton fluorescence processes.
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U2 - 10.1117/12.2589155
DO - 10.1117/12.2589155
M3 - Conference contribution
AN - SCOPUS:85109219451
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Nonlinear Optics and Applications XII
A2 - Bertolotti, Mario
A2 - Zayats, Anatoly V.
A2 - Zheltikov, Alexei M.
PB - SPIE
T2 - Nonlinear Optics and Applications XII 2021
Y2 - 19 April 2021 through 23 April 2021
ER -