Detection of optical second harmonic generation from high Tc YBa2Cu3O7 epitaxial thin films
Abstract
We have attempted to measure the second harmonic generation (SHG) of YBa2Cu3O(7-delta) (YBCO) epitaxial films grown on (001) MgO substrates by laser ablation. Since the structure of the film has inversion symmetry, the possibly SHG susceptibility can only be attributed to the antiferromagnetic dipoles and electric quadrupoles. The delicate and meticulous experiment shows that the angular dependence of the second harmonic susceptibility of the superconducting films can be fitted successfully by the time-dependent density functional approach.
- Publication:
-
IEEE Photonics Technology Letters
- Pub Date:
- November 1994
- DOI:
- 10.1109/68.334840
- Bibcode:
- 1994IPTL....6.1362L
- Keywords:
-
- Harmonic Generations;
- Nonlinear Optics;
- Superconducting Films;
- Thin Films;
- Ybco Superconductors;
- Antiferromagnetism;
- Magnetic Dipoles;
- Quadrupoles;
- Communications and Radar