Translator Disclaimer
Paper
20 September 2005 A real time phase reversal read-out system with BaTiO3 crystal as a recording medium for speckle fringe analysis
Author Affiliations +
Abstract
A real-time phase reversal speckle photography system using BaTiO3 crystal as a recording medium is developed for phase step calibration. A pi-phase shift on the random speckle pattern is accomplished by varying pressure within an air-filled quartz cell inserted in the pump beam in a two-beam coupling arrangement It is shown that phase reversal can be achieved when a pi-shifted speckle pattern overlaps on an un-shifted speckle pattern at the observation plane in real-time, results in, destructive interference between the two speckle patterns. This phenomenon is exploited for calibration of the phase shifter. A four frame phase shifting technique is used, and the experimental whole field speckle fringe analysis carried out on a diffuse surface subjected to rotation in its own plane is presented.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nandigana Krishna Mohan "A real time phase reversal read-out system with BaTiO3 crystal as a recording medium for speckle fringe analysis", Proc. SPIE 5912, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 59120C (20 September 2005); https://doi.org/10.1117/12.614406
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
Back to Top