| Autor: |
Kumar RR; Indian Institute of Science Education & Research, Bhopal, India., Barik AR, Vinod EM, Bapna M, Sangunni KS, Adarsh KV |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2013 May 15; Vol. 38 (10), pp. 1682-4. |
| DOI: |
10.1364/OL.38.001682 |
| Abstrakt: |
In this Letter, we present the interesting results of photodarkening (PD), transition toward photostability, and a slow crossover from PD to photobleaching when composition of the chalcogenide glassy thin film changes from Ge-deficient to rich. A subsequent Raman analysis on these as-prepared and irradiated samples provide the direct evidence of photoinduced structural rearrangement, i.e., photocrystallization of Se and the removal of edge-sharing GeSe4 tetrahedra. Further, our experimental results clearly demonstrate that light-induced effects can be effectively controlled by choosing the right composition and provide valuable information on synthesizing photostable/sensitive glasses. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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