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Opt Express. 2009 Feb 16;17(4):2984-96.

Optimally chirped multimodal CARS microscopy based on a single Ti:sapphire oscillator.

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  • 1Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6, Canada.


We demonstrate high performance coherent anti-Stokes Raman scattering (CARS) microscopy of live cells and tissues with user-variable spectral resolution and broad Raman tunability (2500 - 4100 cm(-1)), using a femtosecond Ti:Sapphire pump and photonic crystal fiber output for the broadband synchronized Stokes pulse. Spectral chirp of the fs laser pulses was a user-variable parameter for optimization in a spectral focusing implementation of multimodal CARS microscopy. High signal-to-noise, high contrast multimodal imaging of live cells and tissues was achieved with pixel dwell times of 2-8 micros and low laser powers (< 30 mW total).

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