Effects of N2-CO Polarization Beating on Femtosecond coherent Anti-stokes Raman Scattering Spectroscopy of N2 (POSTPRINT)

Abstract

The effects of broadband excitation employing femtosecond laser pulses on the coherent anti-Stokes Raman scattering (CARS) spectroscopy of N2 are investigated. We have previously demonstrated that the dephasing rate of the coherence, established by the impulsive excitation of N2 using femtosecond pump and Stokes beams, can be used for measuring gas-phase temperature in chemically reacting flows. The objective of the current work is to investigate the effects of polarization beating between N2 and CO on the measured gas-phase temperature using time-resolved femtosecond CARS spectroscopy of N2.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2010
Accession Number
ADA520221

Entities

People

  • Daniel Richardson
  • James. R. Gord
  • Paul J. Kinnius
  • Robert P. Lucht
  • Sukesh Roy

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Amplifiers
  • Bandwidth
  • Excitation
  • Femtosecond Lasers
  • Femtosecond Time
  • Frequency
  • Laser Pulses
  • Lasers
  • Measurement
  • Military Research
  • Polarization
  • Raman Scattering
  • Scattering
  • Spectroscopy
  • Turbines

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Plasma Physics / Magnetohydrodynamics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy