publication . Article . 2012

Matched-filtering generalized phase contrast using LCoS pico-projectors for beam-forming

Andrew Bañas; Darwin Palima; Jesper Glückstad;
Open Access English
  • Published: 13 Apr 2012
  • Country: Denmark
Abstract
We report on a new beam-forming system for generating high intensity programmable optical spikes using so-called matched-filtering Generalized Phase Contrast (mGPC) applying two consumer handheld pico-projectors. Such a system presents a low-cost alternative for optical trapping and manipulation, optical lattices and other beam-shaping applications usually implemented with high-end spatial light modulators. Portable pico-projectors based on liquid crystal on silicon (LCoS) devices are used as binary phase-only spatial light modulators by carefully setting the appropriate polarization of the laser illumination. The devices are subsequently placed into the object ...
Subjects
free text keywords: Atomic and Molecular Physics, and Optics, Point spread function, Optoelectronics, business.industry, business, Optics, Physics, Spatial filter, Optical tweezers, Phase modulation, Fourier optics, Liquid crystal on silicon, Polarization (waves), Filter (signal processing)
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