Accession Number : ADA189299
Title : Optical Properties of Compressible Inhomogeneous Shear Layers Relevant to High Power Lasers.
Descriptive Note : Final technical rept. 1 Feb 83-31 May 87,
Corporate Author : WASHINGTON UNIV SEATTLE
Personal Author(s) : Christiansen, Walter H
PDF Url : ADA189299
Report Date : 30 Sep 1987
Pagination or Media Count : 51
Abstract : Shear layers and wakes are a major source of optical degradation in flow lasers. The structure of these flows has been studied experimentally with special attention given to their optical properties. Gases with different refractive indices were investigated and the effects of density ratio and mach number were measured. The time averaged optical properties of inhomogenious shear layers is reported here wherein the principle far field measurement was the strehl ratio. Modification of the apparatus of the shear is discussed. Keywords: Shear layers, Laser optical degradation, Refractive indices.
Descriptors : *LASERS, *OPTICAL PROPERTIES, *REFRACTIVE INDEX, FAR FIELD, FLOW, GASES, HIGH POWER, LAYERS, MACH NUMBER, MEASUREMENT, RATIOS, SHEAR PROPERTIES, WAKE
Subject Categories : Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE