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Opt Lett. 2004 Dec 1;29(23):2701-3.

Simple approach to one-laser, broadband coherent anti-Stokes Raman scattering microscopy.

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  • 1Polymers Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.


Coherent anti-Stokes Raman scattering (CARS) microscopy is emerging as a powerful method for imaging materials and biological systems, partly because of its noninvasiveness and selective chemical sensitivity. However, its full potential for species-selective imaging is limited by a restricted spectral bandwidth. Recent increases in bandwidth are promising but still are not sufficient for the level of robust component discrimination that would be needed in a chemically complex milieu found, for example, in intracellular and extracellular environments. We demonstrate a truly broadband CARS imaging instrument that we use to acquire hyperspectral images with vibrational spectra over a bandwidth of 2500 cm(-1) with a resolution of 13 cm(-1).

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