WOITTENNEK FRANZISKA,WOITTENNEK FRANZISKA,WÖLFEL MATHIAS,WÖLFEL MATHIAS,VOGLER KLAUS,VOGLER KLAUS,KITTELMANN OLAF,KITTELMANN OLAF
申请号：
PL09768494
公开号：
PL2501348T3
申请日:
2009.11.18
申请国别(地区):
PL
年份:
2017
代理人:
摘要：
The invention relates to a laser-supported material processing device, comprising a laser (14) for providing a pulsed laser beam (16), a measuring arrangement (30, 32, 34, 36, 38) in order to obtain measured values of a fundamental wave power of the laser beam and of a power of at least one higher harmonic generated from the laser beam by means of frequency multiplication, and an evaluating unit (22) connected to the measuring arrangement, which is designed to examine the quality of the laser beam (16) according to the measured fundamental wave power, the measured power of the higher harmonic, and a set radiation power of the laser (14). By calculating the quotient of the measured fundamental wave power and of the measured power of the higher harmonic, the present conversion efficiency of the frequency multiplication can be determined. Said present conversion efficiency of the frequency multiplication is a measure of the quality of the wave front and the pulse duration of the laser beam (16).
