Grundlagenuntersuchungen zur Strahlkontrolle bei Hochleistungsfestkoerperlasern Abschlussbericht

Abstract

For separation of diagnosis beams from the main beam of high-performance solid state lasers a diffractive beam separator has been developed consisting of a quartz block. Into one face of the quartz block a grid of defined structure has been etched and the second face was coated with an antireflective layer. On the side front of the quartz block a focussing hologram is positioned regenerating the original sectional area of the main beam and enabling thus a real-time control of the spatial beam profil. The separation ratio (0.2%-1.1%) are independent on the power of the incident beam. The quality of the diagnosis beam is equal to that of the main beam. The grids are beam-resistant up to 2 kW. By application of such grid separators an improved performance control of the solid state laser system is achieved. (WEN)SIGLEAvailable from TIB Hannover: F97B845+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman