Patent ID: 6600602
Filing Date: 2003-07-29
Classification: G02B,G03H

Abstract:
A method of use for a diffraction grating with a multiplicity of parallel diffraction structures succeeding one another periodically, which are arranged on a support and each incorporate a slat extending from a base area of the support,characterized in that the (3; 103; 203; 303) slat exhibits a substantially rectangular cross-section, wherein the width w of the slat (3; 103; 203; 303), measured normal to the center plane (7; 307) of the slat (3; 103; 203; 303) and parallel with the base area (4; 104; 204; 304), comes to less than 100 nm, wherein the method includes the steps of: matching a wavelength of an incident light source to an angle of incidence of the light source relative to the diffraction grating; and using the diffraction grating as a reflection grating in a Littrow configuration.