Patent ID: 9279727
Filing Date: 2016-03-08
CPC Classification: G01J,H01L

Claim Text:
1. A method of determining a shape of an irradiance pulse to which a workpiece is to be exposed during a thermal cycle, the method comprising: a) receiving, with a processor circuit, thermal cycle parameters specifying requirements of the thermal cycle; b) determining, with the processor circuit, a shape of a heating portion of the irradiance pulse, wherein determining comprises optimizing at least one parameter of a flux profile model of the heating portion of the irradiance pulse to satisfy the requirements while minimizing frequency-domain energy spectral densities of the flux profile model at resonant frequencies of the workpiece, to minimize vibration of the workpiece at the resonant frequencies when the workpiece is exposed to the irradiance pulse; and c) generating the irradiance pulse, incident on the workpiece.