Patent ID: 6738396
Filing Date: 2004-05-18
Classification: B23K,H01S

Abstract:
A method for pulsed laser micromachining of target material comprising:providing a control signal based on position information of target material relative to a pulsed laser beam position; generating, based on the control signal, a pulsed laser output beam using a solid state gain section, the gain section having an optically pumped gain medium and further having a non-cylindrical guiding region over which a beam is amplified and guided in at least one direction, the pulsed laser output beam having; a pre-determined wavelength, a pulse width in the range of 10 femtoseconds to about 30 nanoseconds, pulse energy of about 20 microjoules or greater, and a repetition rate of about 5 kilohertz or higher; forming a pulsed laser processing beam; and delivering at least a portion of the pulsed laser processing beam to the target material to modify a physical property of the target material.