Real-time speckle photography using photorefractive Bi12SiO20 crystal

Kiyoshi Nakagawa; Takumi Minemoto

doi:10.1117/12.47104

1 October 1991 Real-time speckle photography using photorefractive Bi12SiO20 crystal

Kiyoshi Nakagawa, Takumi Minemoto

Proceedings Volume 1508, Industrial Applications of Holographic and Speckle Measuring Techniques; (1991) https://doi.org/10.1117/12.47104
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

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

Citation Download Citation

Kiyoshi Nakagawa and Takumi Minemoto "Real-time speckle photography using photorefractive Bi12SiO20 crystal", Proc. SPIE 1508, Industrial Applications of Holographic and Speckle Measuring Techniques, (1 October 1991); https://doi.org/10.1117/12.47104

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