Patent ID: 9576836
Date: 2017-02-21
CPC Classifications: B23K,B32B,C09J,H01L,Y10T

Claim:
1. A method comprising: providing a first substrate bonded to a second substrate by a material, said first substrate being transparent to at least some wavelengths of electromagnetic radiation; irradiating said first substrate with said electromagnetic radiation to which said first substrate is transparent, such that said electromagnetic radiation impinges on said material causing a decomposition thereof at a location at an interface between said first substrate and said material; said decomposition resulting in, at said location, an interface of said first substrate and an atmosphere of said decomposition, said atmosphere of said decomposition having an optical property, wherein irradiating said first substrate is carried out such that said electromagnetic radiation impinges on said interface at an incident angle such that said optical property causes said electromagnetic radiation to substantially totally reflect at said interface, thereby ceasing said decomposition of said material.