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Triple product acousto-optical processor for the astrophysical applications
Acceso Abierto
Data processing
Triple product processor
Space-and-time integrating
Schematic arrangement
Astrophysical instrumentation
Both a high level of developing the spatially spot-like and one-dimensional input devices and the flexibility of a design inherent in two-dimensional optical systems with similar modulating components make it possible to realize various opto-electronic processing systems with an improved productivity. This is why a one-dimension acousto-optic technique can be successfully involved into developing an extremely high-bit-rate data processor based on the algorithm of triple product correlations. Practically, triple product correlations originate within an optical scheme including the modulated light source, representing the first input port, and two wide-aperture acousto-optical cells forming two other input ports. Due to specifically constructed lens system, initially modulated light beam is crossing sequentially the apertures of acousto-optical cells oriented at right angle to each other. Finally, a CCD-matrix integrates the received optical signal with respect to time and registers the resulting triple product correlations. In a view of arranging similar acousto-optical processor for modeling triple product correlations, potential performances of the progressed design for similar processor are estimated as well. This triple product acousto-optical processor is oriented to studies in the extra-galactic astronomy as well as to searching the extra-solar planets, so that algorithm of the space-and-time integrating is desirable for a wideband spectrum analysis with an improved resolution. It includes 1D-acousto-optic cells as the input devices for a 2D -optical data processing. The importance of this algorithm is based on exploiting the chirp Z-transform technique providing a 2D-Fourier transform of the input signals. The system produces the folded spectrum, accumulating advantages of both space and time integrating. Its frequency bandwidth is practically equal to the bandwidth of transducers inherent in acousto-optical cells. Then, similar processor is able to provide really high frequency resolution, which is practically equal to the reciprocal of the CCD-matrix photo-detector integration time. Here, the current state of designing the triple product acousto-optical processor in frames of the astrophysical instrumentation is presented.
Instituto Nacional de Astrofísica, Óptica y Electrónica
Público en general
Versión aceptada
acceptedVersion - Versión aceptada
Aparece en las colecciones: Reportes Técnicos de Óptica

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