Multiplex coherent anti-Stokes Raman microspectroscopy with tailored Stokes spectrum |
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Authors: | Rehbinder Jean Pohling Christoph Buckup Tiago Motzkus Marcus |
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Institution: | Physikalisch-Chemisches Institut, Heidelberg Universit?t, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany. |
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Abstract: | We combined the ultrabroadband supercontinuum of a photonic crystal fiber with a pulse shaper, resulting in a highly flexible light source for multiplex coherent anti-Stokes Raman microscopy. Implemented as the Stokes pulse, it provides tailored selection of the relevant Raman transitions, resulting in a reduced photon load and partial suppression of the nonresonant background. This experiment exploits the advantages of multiplex excitation with the increased acquisition speed of single-channel detection. The molecule-specific Stokes pulses are demonstrated for chemical mapping of a polymer blend. |
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