In-situ measurement of reversible photodarkening in ion-conducting chalcohalide glass.
We report the kinetics of below band-gap light induced photodarkening in (80-x)GeS(2)-20Ga(2)S(3)-xAgI (x = 0 and 20 mol %) bulk chalcogenide glasses by measuring the time evolution of transmission spectra at every 10 milliseconds. The results prove clearly the enhancement of photosensivity upon doping of AgI compound in glasses. It is interesting to find that PD observed in AgI-doped glass totally disappears two hours later after the laser exposing even at room temperature. In significant contrast to 80GeS(2)-20Ga(2)S(3) glass that the metastable part of PD remains for a long time. We expect such a fast auto-recovery property in AgI-doped glass can be utilized for optical signal processing.
University Pardubice, Faculty of Chemical Technology, Department of General and Inorganic Chemistry, Research Centre, Legion's sq. 565, 53210 Pardubice, Czech Republic. jing.ren@upce.cz
Jing
J
Ren
Tomas
T
Wagner
Jiri
J
Orava
Tomas
T
Kohoutek
Bozena
B
Frumarova
Miloslav
M
Frumar
Guang
G
Yang
Guorong
G
Chen
Donghui
D
Zhao
Ashtosh
A
Ganjoo
Himanshu
H
Jain
D018011:Chalcogens / Q000737:chemistry*; D003198:Computer Simulation; D005898:Glass / Q000737:chemistry*; D006219:Halogens / Q000737:chemistry*; D007477:Ions; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D010777:Photochemistry / Q000379:methods*; D012542:Scattering, Radiation
D018011:Chalcogens; D006219:Halogens; D007477:Ions