Holographically recorded photopolymer diffractive optical element for holographic and electronic speckle-pattern interferometry
نویسندگان
چکیده
منابع مشابه
Extended-range temporal electronic speckle pattern interferometry.
In recent years the availability of high-speed digital video cameras has motivated the study of electronic speckle pattern interferometry (ESPI) in the time domain. To this end a properly sampled temporal sequence of N-fringe patterns is used to analyze the temporal experiment. Samples of temporal speckle images must fulfill the Nyquist criteria over the time axis. When the transient phenomena ...
متن کاملElectronic speckle-pattern interferometer using holographic optical elements for vibration measurements.
We report a simple, compact electronic speckle-pattern interferometer (ESPI) incorporating holographic optical elements (HOEs) for the study of out-of-plane vibration. Reflection and transmission HOEs provide reference and object beams in the interferometer. The alignment difficulties with conventional ESPI systems are minimized using HOEs. The time-average ESPI subtraction method is used to ge...
متن کاملOblique incidence and observation electronic speckle-pattern interferometry.
In this paper we discuss an oblique incidence and observation electronic speckle-pattern interferometer, in which we use an anamorphic prism in front of the object. A collimated beam traveling through the prism is partly reflected at the base of the prism. The reflected light is the reference beam and the transmitted light illuminates the diffuse object, thereby generating the object beam. In t...
متن کاملPhotopolymer-based stratified volume holographic optical elements.
We report the implementation of stratified volume holographic optical elements (SVHOE's) using DuPont's Omnidex holographic photopolymer material and an in situ exposure technique for simultaneous multilayer grating recording. Experimental measurement of the +1-order angular sensitivity of a seven-layer SVHOE structure shows remarkable agreement with both theory and numerical simulation for inc...
متن کاملPhase Unwrapping of Electronic Speckle Pattern Interferometry Maps
This paper aims to provide an effective and distortion-free approach for the phase unwrapping of digital speckle pattern interferometry (ESPI) maps. ESPI is a very powerful measurement tool among industrial users. However, high percentages of noise are present in the experimental data obtained from the method and, therefore, most phase unwrapping algorithms fail to restore the correct phase fil...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Optics
سال: 2002
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.41.007475