Accession Number : ADA267823


Title :   Study of High Speed Interference Photography with Two-Dimensional Acousto-Optical Lattice Deflection


Corporate Author : FOREIGN AEROSPACE SCIENCE AND TECHNOLOGY CENTER WRIGHT-PATTERSON AFB OH


Personal Author(s) : He, Anzhi ; Yan, Dapeng ; Ni, Xiaowu


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267823.pdf


Report Date : 20 Jul 1993


Pagination or Media Count : 15


Abstract : This paper presents the principle and method of high speed interference photography by using the technique of two dimensional acousto- optical lattice deflection. The light beam carrying the interferogram is deflected into a lattice of 10x10 light spots in a time series; the interferogram is recorded on a photographic negative. The CW laser is the light source; the exposure time can be adjusted between 10(exp -5) to approximately 3x10(exp -6) s; the framing frequency was about 10(exp 5) frames/s. This method was used to record interferograms of transient-state temperature fields in an experimental study of the principle.


Descriptors :   *INTERFEROGRAMS , *ACOUSTOOPTICS , TWO DIMENSIONAL , CHINESE LANGUAGE , HIGH SPEED PHOTOGRAPHY , TRANSLATIONS , CHINA


Subject Categories : Acoustics
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE