Accession Number : ADP000237

Title :   Shock Tube Simulation of Pulsed Flow Aerodynamic Windows,

Corporate Author : TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Kulkarny,V. A. ; Shwartz,J. ; Briones,R. A.

Report Date : JUL 1981

Pagination or Media Count : 8

Abstract : Aerodynamic windows provide pressure and gas species isolation interfaces which are transparent to laser radiation. The feasibility of using a shock tube flow field as a single-shot window for short, high-energy laser pulses was investigated. A primary laser driven inertial confinement fusion test facility currently planned by DoE. Experiments were performed to determine the phase aberrations and beam-quality degradations produced by a pulsed-flow window. Holographic interferograms, when interpreted with a densitometer, typically showed an RMS phase aberration of 0.13, rad in tests using He and 1.25 in tests using air, all at the 0.694 micron Ruby wavelength.

Descriptors :   *Shock tubes, *Windows, *Lasers, *Pulses, *Flow fields, Holography, Continuous wave lasers, Pulsed lasers

Distribution Statement : APPROVED FOR PUBLIC RELEASE