Search results for "laser marking"
showing 2 items of 2 documents
Multilevel pattern generation by GaN laser lithography: an application to beam shaper fabrication
2006
The new GaN lasers represent a unique combination of compactness, reliability, energy efficiency, and short wavelength. With respect to the previous state of the art in direct laser write lithography, based on gas lasers, this is resulting in a breakthrough, and is opening the way to real desktop micropatterning. The field of diffractive optics can immediately benefit by the availability of a new breed of pattern generators, based on such sources, mainly for fast turnaround device development. This paper presents the technical advantages involved in the use of 405 nm GaN lasers for one-step multilevel patterning. Beam modulation, exposure control and overall process strategy are discussed. …
High Reliability Laser Tracking System
2004
A simple and long-life laser beam steering device has been developed. Continuous operation for low angle steering is achieved through the use of a damped resonant scanner. The system exhibits a flat bandwidth up to 100 Hz and is suited for tracking vibrating objects or in random motion around a fixed point. Applications in the field of laser tracking and beam stabilization are proposed and discussed.