Patent ID: 6952296
Filing Date: 2005-10-04
Classification: G02F,H01S

Abstract:
1. A method for forming the intensity profile of a laser beam, comprising: providing the laser beam so that the laser beam strikes an optically addressable spatial light modulator, the optically addressable spatial light modulator having at least one of a local transmission property and a reflection property depending nonlinearly on a local illumination intensity; inserting an optical imaging system into an optical path of rays for beam widening, the optically addressable spatial light modulator being located in the optical path of rays; wherein the at least one of the local transmission property and the reflection property of the optically addressable spatial light modulator has a saturation range, and wherein at least one of a locally transmitted intensity and a reflected intensity of the laser beam in the saturation range is substantially independent of a locally incident intensity of the laser beam outside the saturation range; wherein the intensity of the laser beam to be formed is adapted to the saturation range of the optically addressable spatial light modulator by at least one of a widening of the laser beam and an optical filter; wherein the optical imaging system includes a first telescope imaging system and a second telescope imaging system designed as an at least one of a mechanically adjustable zoom system, an electrically adjustable zoom system, a mechanically controllable zoom system, and an electrically controllable zoom system, the widening of the laser beam being an at least one of variable and adaptable to an intensity change.