Asynchronous Optical Sampling for Laser-Based Combustion Diagnostics in High-Pressure Flames

Abstract

This report describes the progress on the development of a new laser based combustion diagnostic for the quantitative measurement of both major and minor species in high pressure flames. The technique, asynchronous Optical Sampling (ASOPS), is a state of the art improvement in picosecond pump probe spectroscopy. A method is presented for vastly improving the output of the synchronously mode-locked dye laser systems. A pump probe absorption model is used to estimate the detection limit. A new differential detector is described. A modification is made to the basic instrument to achieve shot noise limited detection.

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Document Details

Document Type
Technical Report
Publication Date
Jun 17, 1991
Accession Number
ADA241640

Entities

People

  • Fred E. Lytle
  • Galen B. King
  • Normand M. Laurendeau

Organizations

  • Purdue University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Absorption
  • Amplifiers
  • Chemistry
  • Detection
  • Detectors
  • Dye Lasers
  • Frequency
  • High Pressure
  • Laser Applications
  • Laser Beams
  • Laser Spectroscopy
  • Lasers
  • Liquid Dye Lasers
  • Mechanical Engineering
  • Sampling
  • Shot Noise
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Combustion science or combustion engineering.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers