1 October 1991 Real-time speckle photography using photorefractive Bi12SiO20 crystal
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Real time speckle photography using B112S1O20 (BSO) crystal for the recording media of specklegram has been investigated for measuring deformation of a object in a real time. First, it is shown that the ratio of a periodic distance of the generated Young fringes to the average diameter of speckles forming the fringes must be kept larger than 1.1 in order to obtain the fully developed Young fringes with a high contrast. Next, it is shown that the BSO used In photorefractlve type has enough potential to be recording media for the double exposure specklegram. Finally, displacements due to deformation on a surface of rectangular pole of a rubber have been measured by real time speckle photography
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kiyoshi Nakagawa, Kiyoshi Nakagawa, Takumi Minemoto, Takumi Minemoto, } "Real-time speckle photography using photorefractive Bi12SiO20 crystal", Proc. SPIE 1508, Industrial Applications of Holographic and Speckle Measuring Techniques, (1 October 1991); doi: 10.1117/12.47104; https://doi.org/10.1117/12.47104

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