Article
Incident Beam Polarization for Laser Doppler Velocimetry Employing a Sapphire Cylindrical Window
Applied Optics
Document Type
Article
Publication Date
7-1-1985
Disciplines
Abstract
For laser Doppler velocimetry studies employing sapphire windows as optical access ports, the birefringency of sapphire produces an extra beam intersection volume which serves to effectively smear the acquired velocity flow field data. It is shown that for a cylindrical window geometry, the extra beam intersection volume may be eliminated with minimal decrease in the fringe visibility of the remaining intersection volume by suitably orienting the polarizations of the initial laser beams. For horizontally incident beams, these polarizations were measured at three intersection locations within the cylinder. It was found that the measured polarization angles agreed with the theoretical predictions.
DOI
10.1364/AO.24.001987
Version
Publisher's PDF
Publisher's Statement
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-24-13-1987. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Citation Information
Lock, James A. and Harold J. Schock. "Incident Beam Polarization for Laser Doppler Velocimetry Employing a Sapphire Cylindrical Window." Applied Optics 24 (1985): 1987-1995.