COHERENT LASERSYSTEMS GMBH & CO. KG Patent applications |
Patent application number | Title | Published |
20150247808 | MONITORING METHOD AND APPARATUS FOR CONTROL OF EXCIMER LASER ANNEALING - A method is disclosed evaluating a silicon layer crystallized by irradiation with pulses form an excimer-laser. The crystallization produces periodic features on the crystalized layer dependent on the number of and energy density ED in the pulses to which the layer has been exposed. An area of the layer is illuminated with light. A microscope image of the illuminated area is made from light diffracted from the illuminated are by the periodic features. The microscope image includes corresponding periodic features. The ED is determined from a measure of the contrast of the periodic features in the microscope image. | 09-03-2015 |
20150198823 | FARADAY ROTATOR FOR AN OPTICAL ISOLATOR - A Faraday rotator includes two magnet sub-assemblies assemblies spaced apart and aligned with each other with a gap therebetween. Each magnet sub-assembly includes a central magnet magnetized in direction parallel to the gap. The central magnet is sandwiched between two end magnets magnetized in a direction perpendicular to the gap. A magneto-optic crystal is located in the gap between the central magnets. | 07-16-2015 |
20140301422 | MICROCRYSTAL LASER FOR GENERATING LASER PULSES - A microcrystal laser for generating laser pulses has a laser resonator which has a laser medium arranged between two mirrors; and an arrangement for stabilizing the optical path length is provided. The laser resonator has a saturable absorber medium for pulse generation. | 10-09-2014 |