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5 March 2021 Silicon nitride based light sources tailored for coherent Raman scattering
Niklas M. Lüpken, Thomas Würthwein, Jörn P. Epping, Klaus-J. Boller, Carsten Fallnich
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Proceedings Volume 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX; 116700S (2021) https://doi.org/10.1117/12.2578246
Event: SPIE LASE, 2021, Online Only
Abstract
Silicon nitride waveguides offer a high nonlinear refractive index and tight mode confinement, ideal for efficient four-wave mixing (FWM) processes. We present a light source for broadband as well as narrowband coherent anti-Stokes Raman scattering (CARS), with the potential to be set up as an all-integrated device, based on FWM in silicon nitride waveguides. Signal and idler pulses are generated via FWM with only 4 nJ input pulse energy and stimulated using a tunable continuous-wave seed source, such that the idler and residual pump pulses can be used for CARS measurements, enabling chemically-selective label-free imaging across the entire fingerprint region.
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Niklas M. Lüpken, Thomas Würthwein, Jörn P. Epping, Klaus-J. Boller, and Carsten Fallnich "Silicon nitride based light sources tailored for coherent Raman scattering", Proc. SPIE 11670, Nonlinear Frequency Generation and Conversion: Materials and Devices XX, 116700S (5 March 2021); https://doi.org/10.1117/12.2578246
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KEYWORDS
Silicon
Light sources
Raman scattering
Waveguides
Nonlinear dynamics
Photonic crystal fibers
Refractive index
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