Patent ID: 9156238
Filing Date: 2015-10-13
Classification: B23K,B29C,B32B,C03B,C03C

Abstract:
1. An apparatus for sealing and welding optically transparent substrates comprising: an ultra-short pulse laser to produce a beam of ultra-short laser pulses, wherein the beam comprises a pulse duration, a wavelength, a repetition rate, and a pulse energy; an acoustic-optic-modulator at the output of the ultra-short pulse laser to control the repetition rate of the beam; an attenuator to control the pulse energy of the beam after passing through the acoustic modulator; a focusing lens to focus the beam between a top substrate and a bottom substrate, wherein the top substrate and the bottom substrate are substantially in contact; and a three-axis stage to control the position of the top substrate and the bottom substrate relative to the beam; wherein the top substrate and the bottom substrate are held together in a fixture comprising a top plate atop the top substrate, a bottom plate below the bottom substrate, and a protrusion between the bottom substrate and the bottom plate; wherein the top plate and the bottom plate are mechanically coupled together to press the top substrate and the bottom substrate together; and wherein the protrusion comprises segments of a cylinder or a torus.