Binary Phase Shaping for Selective Single-Beam CARS Spectroscopy and Imaging of Gas-Phase Molecules (Postprint)

Abstract

We report on mode-selective single-beam coherent anti-Stokes Raman spectroscopy (CARS) 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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2012
Accession Number
ADA562142

Entities

People

  • Bingwei Xu
  • Dmitry Pestov
  • James. R. Gord
  • Marcos Dantus
  • Paul J. Wrzesinski
  • Sukesh Roy
  • Vadim V. Lozovoy

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Bandwidth
  • Contrast
  • Detection
  • Electronic Mail
  • Excitation
  • Frequency
  • Lasers
  • Measurement
  • Military Research
  • Modulation
  • Molecules
  • Phase Modulation
  • Raman Scattering
  • Spectroscopy
  • Turbines

Fields of Study

  • Physics

Readers

  • Molecular Photonics/Laser Physics
  • Optical Physics and Photonics.
  • Speech Processing/Speech Recognition.