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Synthesis of a holographic image velocity filter using the nonlinear photorefractive effect

1988; Optica Publishing Group; Volume: 27; Issue: 14 Linguagem: Inglês

10.1364/ao.27.002887

0003-6935

Frederick Vachss, Lambertus Hesselink,

Photonic and Optical Devices

We demonstrate a technique by which components of an image moving with a given speed and direction may be selectively enhanced. By using the strong grating velocity sensitivity of the nonlinear photorefractive response, we show that a BSO crystal used in a schlieren imaging system may be used as a real-time velocity filter. The velocity selectivity, tunability and resolution constraints of this system are discussed in detail.