Patent ID: 8739574

Claim:
A method for sealing and welding optically transparent substrates, the method comprising: generating a beam of ultra-short pulses from an ultra-short pulsed laser, wherein the beam comprises a pulse duration, a wavelength, a repetition rate, and a pulse energy; directing the beam to an acoustic-optic modulator to control the repetition rate of the beam; directing the beam to an attenuator after passing through the acoustic-optic modulator to control the energy of the beam; directing the beam to a focusing lens after passing through the attenuator to focus the beam between a top substrate and a bottom substrate in order to weld the top substrate to the bottom substrate, wherein the top substrate and the bottom substrate are substantially in contact; and controlling the position of the top substrate and the bottom substrate relative to the beam using a three-axis stage in order to weld the top substrate to the bottom substrate.