Generation of variable optical field patterns using amplitude spatial Fourier filtering

Authors

Lourdes Patricia R. Ramirez ⋅ PH National Institute of Physics, University of the Philippines Diliman
George Allan P. Esleta ⋅ PH National Institute of Physics, University of the Philippines Diliman
Loren M. Tusara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Vincent Ricardo Daria ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We demonstrate generation of optical patterns via variable spatial Fourier filtering of two-dimensional phase patterns that are dynamically encoded onto a phase-only spatial light modulator. In this method, the optical pattern is formed at the image plane of a 4-f lens setup that employs a spatial amplitude filter at the Fourier plane. We vary the configurations of the optical patterns into optical lattices and meshes by changing the: (1) fill factor of the phase pattern, (2) aperture size of the spatial filter, and (3) transverse position of the spatial filter with respect to the optical axis. Translation of the spatial filter produces optical meshes akin to the structure of some photonic crystals and can therefore be used as templates for their fabrication. Moreover, a dynamically reconfigurable optical pattern is an essential component in optical fractionation.

Downloads

Issue

2006: Proceedings of the 24th Samahang Pisika ng Pilipinas National Physics Congress

Article ID

SPP-2006-PA-06

Section

Poster Session PA

Published

2006-10-25

How to Cite

[1]

LPR Ramirez, GAP Esleta, LM Tusara, and VR Daria, Generation of variable optical field patterns using amplitude spatial Fourier filtering, Proceedings of the Samahang Pisika ng Pilipinas 24, SPP-2006-PA-06 (2006). URL: https://proceedings.spp-online.org/article/view/SPP-2006-PA-06.