Abstract
The effects of controlled atmosphere heat treatments on the photosensitivity and UV absorption of GeO2 SiO2 solgel planar waveguides are presented. Photoinduced refractive-index changes in the samples are deduced from photosensitive grating writing experiments and are found to be of the order of those seen in some fiber experiments. A correlation is seen between the sample sensitivity and the strength of the absorption at 242 nm, providing insight into the possible mechanisms governing photosensitive processes in these materials.
Original language | English (US) |
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Pages (from-to) | 25-27 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 18 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics