Patent ID: 7759020
Filing Date: 2010-07-20
Classification: G03H

Abstract:
1. A system for providing holographic optical traps with the traps having different selected ones of a plurality of different wavelengths of light, comprising: a source of laser light; a diffractive optical element for providing a computer generated hologram for operating on the laser light to produce a plurality of separate patterns of optical traps; and the diffractive optical element interacting with the laser light to simultaneously produce separate sets of a plurality of optical traps, each one of the optical traps being of a different one of a plurality of colors of a selected different light wavelength with each of the selected different light wavelengths having an associated different focal plane location along the optical axis and the different colors being displayed simultaneously wherein any central spot from the laser light and any ghost images are not superimposed with any of the optical traps.