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Opt Express. 2010 Oct 25;18(22):22693-701. doi: 10.1364/OE.18.022693.

Single-beam coherent Raman spectroscopy and microscopy via spectral notch shaping.

Author information

  • 1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel. ori.katz@weizmann.ac.il

Abstract

We present a simple and easily implementable scheme for multiplexed Coherent Anti-Stokes Raman Scattering (CARS) spectroscopy and microscopy using a single femtosecond pulse, shaped with a narrow spectral notch. We show that a tunable spectral notch, shaped by a resonant photonic crystal slab, can serve as a narrowband, optimally time-delayed probe, resolving a broad vibrational spectrum with high spectral resolution in a single-shot measurement. Our single-source, single-beam scheme allows the simple transformation of any multiphoton microscope with adequate bandwidth into a nearly alignment-free CARS microscope.

PMID:
21164608
[PubMed]
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