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- Optimal control of coherent anti-Stokes Raman scattering image contrast
Optimal control of coherent anti-Stokes Raman scattering image contrast
in: Applied Physics Letters (2012)
Optimal control of CARS image contrast is reported. The setup combines an evolutionary strategy and a closed-loop feedback with a liquid-crystal spatial modulator to control the spectrum of the Stokes pulse within a CARS scheme to optimize the vibrational contrast of CARS images. The CARS excitation spectrum is optimized for image contrast at a pre-determined wavenumber position. The optimization feedback uses an image-contrast parameter generated from the image itself as the experimentally imposed fitness parameter. This strategy allows for enhancing the image contrast by a factor of up to 2.6.
DOI: 10.1063/1.4731205