Laser Diagnostics for Reacting Flows

Abstract

Research was conducted to develop advanced laser-based diagnostics for non-intrusive measurements relevant to air-breathing combustion. The program emphasized the use of spectrally-resolved absorption with cw tunable diode lasers (TDL) and the use of planar laser-induced fluorescence (PLIF) with pulsed IR and UV laser sources. Progress during the past year was highlighted by results in five areas including: progress on understanding the photophysics of toluene to enable its use as a PLlF indicator of fuel-air ratio; development and demonstration of new schemes for quantitative LIF of NO at high pressure; observation of the first UV PLIF images of carbon dioxide; fundamental measurements of IR PLIF for species with inaccessible electronic transitions; investigation of 2f wavelength-modulation techniques for temperature measurement in high-pressure and/or high-temperature gas flows, and temperature measurements via optical absorption in the UV and NIR: spectral regions targeting CO2 and H20, respectively.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 2005
Accession Number
ADA437294

Entities

People

  • Ronald Kenneth Hanson

Organizations

  • Stanford University

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Breathing
  • Air Force Research Laboratories
  • Carbon Dioxide
  • Chemical Reactions
  • Combustion
  • Combustion Products
  • Detectors
  • Fluorescence
  • High Pressure
  • High Temperature
  • Laser Diagnostics
  • Laser Diodes
  • Laser Induced Fluorescence
  • Lasers
  • Mechanical Engineering
  • Propulsion Systems
  • Ultraviolet Lasers

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics