Asynchronous Optical Sampling for Laser-Based Combustion Diagnostics in High Pressure Flames.
Abstract
This report describes progress on the development of a new laser based combustion diagnostic method 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 laser spectroscopy. The ASOPS signal has been observed using a solution of rhodamine B in methanol as the sample. The response of the instrument was shown to be proportional to pump power, probe power, and sample absorptance. Different frequency synthesizers and different modes of triggering were used to study their effect on signal stability. Cavity dumpers and frequency doublers have been added to the instrument to prepare for the measurement of the hydroxyl radical in atmosphere laminar flames.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1986
- Accession Number
- ADA177506
Entities
People
- Fred E. Lytle
- Galen B. King
- Normand M. Laurendeau
Organizations
- Purdue University