Binary phase shaping for selective single‐beam CARS spectroscopy and imaging of gas‐phase molecules
- 21 March 2011
- journal article
- research article
- Published by Wiley in Journal of Raman Spectroscopy
- Vol. 42 (3) , 393-398
Abstract
We report on mode‐selective single‐beam coherent anti‐Stokes Raman scattering spectroscopy of gas‐phase molecules. Binary phase shaping (BPS) is used to produce single‐mode excitation of O2, N2, and CO2 vibrational modes in ambient air and gas‐phase mixtures, with high‐contrast rejection of off‐resonant Raman modes and efficient nonresonant‐background suppression. In particular, we demonstrate independent excitation of CO2 Fermi dyads at ∼1280 and ∼1380 cm−1 and apply BPS for high‐contrast imaging of CO2 jet in ambient air. Copyright © 2010 John Wiley & Sons, Ltd.Keywords
Funding Information
- Air Force Research Laboratory under Phase II SBIR
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