New multiple aperture arrangements for speckle photography

MYRIAN TEBALDI; LUCIANO ANGEL TORO; MARCELO TRIVI; NESTOR BOLOGNINI

OPTICS COMMUNICATIONS

Elsevier Science

Lugar: Amsterdam (The Netherlands); Año: 2000 vol. 182 p. 95 - 105

0030-4018

We propose a multiple exposure specklegram by using an optical system whose multiple aperture pupil changes between exposures. In particular, we analyze experimentally two arrangements and we show that it is possible to store the required information by employing a minimum number of registers if an adequate selection of the pupil is done. We study the effect of the decorrelationamong the stored speckle pattern.introduced by changing the multiple aperture pupil arrangements between exposures. The fundamentals and the relative benefits of the new scheme proposed are discussed on the basis of a fringe visibility analysisamong the stored speckle pattern.introduced by changing the multiple aperture pupil arrangements between exposures. The fundamentals and the relative benefits of the new scheme proposed are discussed on the basis of a fringe visibility analysis