Photostructural changes

Figure 2.17 Schematic representation of photostructural changes in a chalcogenide glass, (a] Photoexcitation of a valence electron leads to a net structural rearrangement in a floppy network, (b] Photoexcitation leaves a rigid network unchanged (after [77]].

Schardt C. R., Lucas R, Doraiswamy A., Jivaganont P, and Simmons J. H., Raman temperature measurement during photostructural changes in Ge Sei.x glass./. Non-Cryst Solids, 351,1653-1657 (2005). 

Hamanaka H., Tanaka K., and lizima S., Reversible photostructural change in melt-quenched AS2S3 glass. Solid State Commun., 23,63-65 (1977). 

Shimakawa K, Yoshida N., Ganjoo A., and Kuzukawa Y, A model for the photostructural changes in amorphous chalcogenides, Philos. Mag. Lett. 77,153-158 (1998). 

Lowe A. J., Elliott S. R., and Greaves G. N., Extended X-ray absorption fine-structure spectroscopy study of photostructural changes in amorphous arsenic chalcogenides, Phiios. Mag. B, 54, 483-490 (1986). 

Chalcogenide glasses respond to irradiation with optical or ultraviolet photons in a unique manner. They exhibit photostructural effects. Photostructural effects, in general, fall into two different categories. The first category is based on changes in scalar properties. 

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