100-kHz-rate gas-phase thermometry using 100-ps pulses from a burst-mode laser

Temperature measurements based on gas-phase coherent anti-Stokes Raman scattering (CARS) spectroscopy are demonstrated in reacting flows at a rate of 100 kHz employing a burst-mode laser with a pulse duration of ∼100  ps. The recently developed picosecond-duration, high-energy burst-mode laser is us...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2015-11, Vol.40 (21), p.5125-5128
Main Authors: Roy, Sukesh, Hsu, Paul S, Jiang, Naibo, Slipchenko, Mikhail N, Gord, James R
Format: Article
Language:English
Subjects:
Beams (radiation)
Bursting
Coherent scattering
Laser beams
Lasers
Pumps
Raman scattering
Temperature measurement
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Temperature measurements based on gas-phase coherent anti-Stokes Raman scattering (CARS) spectroscopy are demonstrated in reacting flows at a rate of 100 kHz employing a burst-mode laser with a pulse duration of ∼100  ps. The recently developed picosecond-duration, high-energy burst-mode laser is used to pump an optical parametric generator/optical parametric amplifier that produces broadband light centered at ∼680  nm to provide the Stokes beams for excitation of the rovibrational Raman transitions of H(2). The 532-nm output of the picosecond burst-mode laser is then utilized as a pump beam for the CARS process that generates 100 single-shot spectra at a rate of 100 kHz during the 1-ms duration burst. Coherent spectroscopy-based temperature measurements at 100 kHz will significantly aid the understanding of transient and unsteady flow phenomena related to turbulent combustion, transonic and hypersonic flows, high-enthalpy flows, and the dynamics of energetic materials.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.40.005125