VERFAHREN UND VORRICHTUNG ZUR ANALYSE UND ÜBERWACHUNG DER LICHTINTENSITÄTSVERTEILUNG ÜBER DEN QUERSCHNITT EINES LASERSTRAHLS

摘要

For analysis and/or monitoring the light intensity distribution over the cross-section of a laser beam ( 1 ), the laser beam ( 1 ) is reflected with a laser mirror ( 2 ), and local thermal expansions of the laser mirror ( 2 ) caused by different light intensities incident on the laser mirror ( 2 ) are detected.