Laser processing apparatus and laser processing method

Abstract

A laser processing apparatus includes a control device controlling laser processing in accordance with processing condition; a detection unit observing processing state on a time-series basis during laser processing and outputting a signal corresponding to observation result as a time-series signal; a parameter estimation unit estimating and outputting, based on first time-series signal data including the time-series signal and/or a first feature computed from the time-series signal and preset corresponding parameter information indicating relationship between the first time-series signal data and at least one parameter value included in the processing condition, a parameter estimate corresponding to the first time-series signal data; a condition change amount determination unit comparing a target parameter value and the parameter estimate and determining a change amount for the processing condition based on comparison result; and a parameter update unit updating the processing condition based on the change amount and the processing condition.