Abstract
Large second-harmonic generation (SHG) in a germanosilicate glass, induced by electrical poling with ultraviolet (UV)-irradiation at 193 nm, is reported. A large SHD coefficient, d, exceeding d22 of LiNbO3 was induced. An anisotropic refractive index is observed, which is a direct evidence of inversion-symmetry breaking. The `UV-excited poling' is one of the promising ways to obtain a novel photonics glass with an appreciable second-order nonlinearity, comparable to that in crystals. Quantitative measurements are still necessary to understand the basic mechanisms of induced nonlinearity.
| Original language | English |
|---|---|
| Pages (from-to) | 119-122 |
| Number of pages | 4 |
| Journal | IEE Conference Publication |
| Issue number | 448 /2 |
| Publication status | Published - 1997 |
| Event | Proceedings of the 1997 11th International Conference on Integrated Optics and Optical Fibre Communications and 23rd European Conference on Optical Communications, IOOC-ECOC'97. Part 2 (of 5) - Duration: 1997 Sept 22 → 1997 Sept 25 |