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In the work presented the potential of a pyrometric process control during laser beam soldering will be enhanced. Primarily we have developed a processing head with an integrated up-to-date pyrometric sensor conditioned for the temperature range of soft soldering. Using high speed photography we have analysed the detected secondary emissions during laser beam soldering and correlated the acquired pyrometric signals of process emissions with processes sequencing. Finally we named different strategies and control methods to achieve reliable high quality solder joints implementing a pyrometric process control