Novel vortex-transform for high frequency modulated patterns

DANIEL SIERRA SOSA; LUCIANO ÁNGEL TORO; NéSTOR BOLOGNINI; MYRIAM TEBALDI

OPTICS EXPRESS

OPTICAL SOC AMER

Lugar: Washington; Año: 2013 vol. 21 p. 23706 - 23711

1094-4087

A novel vortex-transform is proposed. This transform allows for generating complex-valued functions from modulated intensity patterns, including high frequency components from modulation, without the generation of unstable phase singularities. From these complex-valued functions it is possible to obtain intensity and pseudo-phase maps to analyze the intensity recordings without the necessity of phase retrieval techniques. The intensity and pseudo-phase maps obtained by using this transform preserve the modulation structure onto the intensity and phase modulo 2 ð maps, including stable phase singularities.