Formation of gold contact pads on superconducting films by laser ablation

Formation of gold contact pads on dielectric substrates by laser ablation is studied. The mechanical and conductive properties of such contact pads provide a reliable electrical contact between superconducting YBa$_2$Cu$_3$O$_{7-x}$ (YBCO) films (and YBCO-based structures) and add-on electronic components. The contact pads are formed on the substrate before superconducting film deposition. A high adhesion of the contact pad is provided owing to the deep penetration of laser plasma particles into the substrate.