title: Multiplex coherent anti-Stokes Raman microspectroscopy with tailored Stokes spectrum.
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.
authors.affiliation: Physikalisch-Chemisches Institut, Heidelberg Universität, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany.
authors.forename: Jean
authors.initials: J
authors.lastname: Rehbinder
authors.forename: Christoph
authors.initials: C
authors.lastname: Pohling
authors.forename: Tiago
authors.initials: T
authors.lastname: Buckup
authors.forename: Marcus
authors.initials: M
authors.lastname: Motzkus
mesh_terms: D008027:Light; D008853:Microscopy / Q000379:methods*; D055095:Optics and Photonics; D017785:Photons; D020959:Polyethylene / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D011108:Polymers; D020959:Polyethylene; D019904:Polymethyl Methacrylate