In line digital holographic movie based on a double sideband filtering

C. RAMIREZ; A. LIZANA; C. IEMMI; J. CAMPOS

OPTICS LETTERS

OPTICAL SOC AMER

Lugar: Washington; Año: 2015 vol. 40

0146-9592

This Letter proposes a new optical architecture based ona double-sideband filter, simultaneously applied at theFourier plane, for inline digital holography. The proposedarchitecture not only allows removal of the conjugate imagesin the reconstruction process but also reduces the distortionsthat usually appear when using a single-sidebandfilter. We first introduce the mathematical model that explainsthe method and then describe the optical setup usedfor the implementation. The optical system includes a parallelaligned liquid crystal display placed at the Fourierplane that simultaneously filters positive and negativefrequencies, when properly combined with linear polarizers.This feature makes the device useful to registerdynamic processes. Finally, we tested the setup by registeringa holographic movie of microscopic moving objectsplaced at different planes