Patent ID: 6489985
Filing Date: 2002-12-03
Classification: B23K,B41M,G06K,H01S

Abstract:
A marking system comprising:a fiber gain medium consisting of a double clad fiber having a doped core surrounded by an inner pump cladding and providing an optical output beam for marking: a high power modulated laser source for pumping said double clad fiber gain medium, an output from said laser source optically coupled as an input to said inner pump cladding; an optical scanner coupled to receive the output beam from said gain medium to scan said output in multiple dimensions over a surface of an article to be marked; [and] means for modulating said laser pump source to modulate the output of said gain medium with the scanning of the modulated output beam via said scanner to form marks on the article surface; and control means for dampening the ON-time rise of a current signal input for operation of said laser pump source to improve the ON-time quality of said marking output.