title: Proof of concept of fiber dispersed Raman spectroscopy using superconducting nanowire single-photon detectors.
abstract: Due to its high molecular specificity, Raman spectroscopy is a well-established analytical tool. Usually the inelastically scattered Raman light is spectrally dispersed by a spectrometer. Here, we present an alternative method, using an optical fiber as dispersive element. As the group velocity within the fiber is wavelength-dependent, different Raman bands arrive at different times at the detector. In combination with time-correlated single-photon counting, Raman spectra can be measured in the time domain. As detector we implemented a Superconducting Nanowire Single-Photon Detector (SNSPD), which possesses a timing accuracy of about 20 ps. Within this contribution we show first results of Raman spectra measured in the time domain using gradient index fibers of varying length.
authors.forename: Julia
authors.initials: J
authors.lastname: Toussaint
authors.forename: Sebastian
authors.initials: S
authors.lastname: Dochow
authors.forename: Ines
authors.initials: I
authors.lastname: Latka
authors.forename: Aleksandar
authors.initials: A
authors.lastname: Lukic
authors.forename: Torsten
authors.initials: T
authors.lastname: May
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Meyer
authors.forename: Konstantin
authors.initials: K
authors.lastname: Il'in
authors.forename: Michael
authors.initials: M
authors.lastname: Siegel
authors.forename: Jürgen
authors.initials: J
authors.lastname: Popp