$Optical diffraction element$

Optical diffraction element

An optical diffraction element ( 1 ) comprises a diffraction layer ( 4 ) which is divided into diffraction strips ( 6 ) alternating with intermediate strips ( 8 ). The diffraction strips comprise nano-elements ( 10 ) which are aligned in one direction and absorb radiation (b) which is linearly polar...

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Bibliographische Detailangaben
1. Verfasser:	KURT RALPH,T. HOOFT GERT W,LIEDENBAUM COEN,HENDRIKS ROBERT F. M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INORGANIC CHEMISTRY MANUFACTURE OR TREATMENT THEREOF METALLURGY NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS NANOTECHNOLOGY NON-METALLIC ELEMENTS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS TRANSPORTING
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Beschreibung
Zusammenfassung:	An optical diffraction element ( 1 ) comprises a diffraction layer ( 4 ) which is divided into diffraction strips ( 6 ) alternating with intermediate strips ( 8 ). The diffraction strips comprise nano-elements ( 10 ) which are aligned in one direction and absorb radiation (b) which is linearly polarized in this direction. The diffraction element may be a linear or two-dimensional grating ( 1 ) or a Fresnel lens ( 160 ). The polarization-sensitive grating can be used in optical systems in which only radiation with a specific polarization direction should be diffracted, or in an optical record carrier to allow reading of an information structure with high spatial frequencies.