Real-time holography using SeGe films
Abstract
Results are presented on real-time holography in as-deposited amorphous SeGe thin films, in which holographic recordings were realized by means of laser-induced crystallization. The principal mechanisms involved in the process are discussed, with special consideration given to the laser-induced temperature profile, the kinetics of Se crystallization, and the laser-induced crystallization and the diffraction efficiency of thin mixed gratings. It was found that the deposition conditions of the SeGe is a very critical parameter and that the use of Ge to increase the stability of the amorphous phase of Se thin films has the effect of lowering the maximum value of the diffraction efficiency.
- Publication:
-
Lasers 1988; Proceedings of the International Conference
- Pub Date:
- 1989
- Bibcode:
- 1989lase.conf..635L
- Keywords:
-
- Germanides;
- Holography;
- Laser Outputs;
- Real Time Operation;
- Selenium Compounds;
- Thin Films;
- Crystallization;
- Phase Transformations;
- Pulsed Lasers;
- Optics