Accession Number:

ADA156706

Title:

Time Resolved Flow Velocity and Concentration Measurements Using a Travelling Thermal Lens.

Descriptive Note:

Technical rept.,

Corporate Author:

IBM RESEARCH LAB SAN JOSE CA

Personal Author(s):

Report Date:

1985-06-25

Pagination or Media Count:

17.0

Abstract:

The travelling thermal lens technique is a new all optical method for probing concentration and velocity patterns in flowing media. A thermal lens created by absorption of a short laser pulse moves with the flow and can be probed by a cw laser beam further downstream as a deflection signal. This technique enables optical measurements of the flow velocity component perpendicular to the probe laser at high spatial resolution. Its application requires no seeding with particulates as needed in most other optical techniques. Keywords Concentrations Thermal lens Laser application Photothermal spectroscopy.

Subject Categories:

  • Fluid Mechanics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE