Laser Doppler Velocimeter.
Abstract
The patent application relates to the measurement of velocity of a flowing medium, and more particularly to a laser doppler velocimeter measuring fluid velocity in two components. In the invention the laser beam is obtained by diffraction, using the Bragg effect. The Bragg cell invention is a two-dimensional Bragg cell as distinguishing from the common nonself-aligning Bragg cell laser velocimeter. Also, in the present invention only a single detector is required for both velocity components, as the components are separated electronically after signal detection and not optically before detection, as with previous systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 04, 1974
- Accession Number
- AD0164720
Entities
People
- W. M. Farmer
Organizations
- United States Department of the Air Force