Patent ID: 8778121

Claim:
A method for laser-assisted bonding of substrates, in which two substrates are connected together by being brought in direct contact and strengthening of the connection between the substrates is effected subsequently by activation in regions which is induced with laser irradiation at an interface between the substrates, the melting or transformation temperature of the substrates not being reached during the activation, wherein a chemical excitation of the molecules and/or atoms of at least one substrate is effected in the region of the interface by means of the laser irradiation, wherein the two substrates are essentially transparent for a radiated laser irradiation with a wavelength λ a , and are irradiated with laser irradiation of a longwave, non-linearly absorbing wavelength, and multiphoton processes are initiated by precise focusing with correspondingly high intensity of the laser irradiation and an activation energy and hence a degree of strengthening of the connection is adjusted via focusing, wavelength, pulse duration, pulse energy, pulse repetition rate and a number of pulses of the laser irradiation.