Competition between photorelaxation and photoexcitation in chalcogenide glasses and the effect of aging
Source abstract
Abstract
Abstract Measurements of transient photodarkening and permanent Bragg reflector formation were performed on fragile As 18 S 65 Se 17 glass and indicate that photodarkening and photorefraction can only be induced in previously aged glasses while they are prevented in freshly annealed glasses. These phenomena are associated with the photorelaxation process that is revealed to be prominent in fresh glasses and is shown to effectively anneal out the defects produced during photoexcitation thereby resulting in no net permanent changes in the structure. On the other end, aged glasses do not undergo any photorelaxation and exhibit large transient and permanent changes associated with an increase in structural enthalpy as confirmed by Differential Scanning Calorimetry. These results demonstrate that photorelaxation can be a significant problem in fragile glass compositions as it cancels out the effect of photoexcitation and impedes the photodarkening and photorefractive process.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Phase-change materials and chalcogenides · Glass properties and applications · Liquid Crystal Research Advancements
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References (43)
Show source-provided references
1. Reversible photoinduced change in intermolecular distance in amorphous As2S3 network10.1063/1.88136 ↗
2. Photoinduced effects and metastability in amorphous semiconductors and insulators10.1080/00018739500101576 ↗
3. In situ measurement of reversible photodarkening in ion-conducting chalcohalide glass10.1364/OE.16.001466 ↗
4. Photoinduced phenomena in amorphous chalcogenides: from phenomenology to nanoscale
5. Photoinduced self-developing relief gratings in thin film chalcogenide As2S3 glasses10.1109/50.618337 ↗
6. Photoenhanced dissolution and lateral diffusion of silver in amorphous arsenic-sulfur layers10.1016/0022-3093(91)90514-7 ↗
7. Single-mode low-loss chalcogenide glass waveguides for the mid-infrared10.1364/OL.31.001860 ↗
8. Self-developing aspherical chalcogenide microlenses for semiconductor lasers10.1063/1.1598650 ↗
9. Waveguide writing in chalcogenide glasses by a train of femtosecond laser pulses10.1016/S0925-3467(01)00062-3 ↗
10. Model of holographic recording in amorphous chalcogenide films using sub-band-gap light at room temperature10.1103/PhysRevB.55.14236 ↗
11. Fabrication and testing of microlens arrays for the IR based on chalcogenide glassy resist10.1016/0022-3093(96)00118-4 ↗
12. Linear holographic recording at 514nm in amorhpous As2S310.1063/1.125588 ↗
13. Valence-alternation model for localized gap states in lone-pair semiconductors10.1103/PhysRevLett.37.1504 ↗
14. The origin of reversible and irreversible photostructural changes in chalcogenide glasses10.1080/13642819308217935 ↗
15. Configuration-coordinate model for photodarkening in amorphous As2S310.1016/0022-3093(81)90004-1 ↗
16. Mechanism of photoinduced changes in the structure and optical properties of amorphous As2S310.1103/PhysRevLett.85.3305 ↗
17. Direct calculation of light-induced structural change in diffusive motion in glassy As2S310.1103/PhysRevLett.85.2785 ↗
18. Light-induced matrix softening of Ge–As–Se network glasses10.1103/PhysRevLett.101.177402 ↗
19. Competitive photostructural effects in Ge–Se glass10.1103/PhysRevB.71.104207 ↗
20. Photostructural relaxation in As–Se–S glasses: effect of network fragility10.1016/j.jnoncrysol.2006.03.004 ↗
21. Reversible giant photocontraction in chalcogenide glass10.1364/OE.17.018581 ↗
22. Photoinduced structural relaxation in chalcogenide glasses10.1016/j.jnoncrysol.2003.09.008 ↗
23. Topology of covalent non-crystalline solids I. Short range order in chalcogenide alloys10.1016/0022-3093(79)90033-4 ↗
24. Continuous deformations in random networks10.1016/0022-3093(83)90424-6 ↗
25. Constraint theory, vector percolation and glass formation10.1016/0038-1098(85)90381-3 ↗
26. A thermodynamic connection to the fragility of glass-forming liquids10.1038/35070517 ↗
27. Energy landscape and photoinduced structural changes in chalcogenide glasses
28. Physical ageing in glassy As–Se induced by above-bandgap photoexposure10.1016/j.ssc.2007.12.030 ↗
29. Calorimetric characterization of photo-induced relaxation in GeSe9 glass10.1063/1.2215352 ↗
30. Optical microfabrication of chalcogenide glasses10.1126/science.270.5238.974 ↗
31. Photoinduced fluidity in chalcogenide glasses10.1016/S1631-0748(02)01441-8 ↗
32. Nonexponential relaxations in strong and fragile glass formers10.1063/1.466117 ↗
33. Composition dependence and reversibility of photoinduced refractive index changes in chalcogenide glass10.1088/0022-3727/43/44/445401 ↗
34. Photinduced Bragg reflector in As2S3 glass10.1063/1.111803 ↗
35. Origin of photo-induced transmitting oscillations in chalcogenide glasses10.1364/OE.17.018165 ↗
36. Dependence of the fictive temperature of glass on cooling rate10.1111/j.1151-2916.1976.tb09376.x ↗
37. Estimation of activation energies for structural relaxation and viscous flow from DTA and DSC experiments10.1016/0040-6031(95)02781-5 ↗
38. Optically induced localized paramagnetic states in chalcogenide glasses10.1103/PhysRevLett.34.1346 ↗
39. Photoinduced defects in chalcogenide glasses10.1103/PhysRevLett.44.803 ↗
40. Photodarkening in Ge3Se17 glass10.1016/S0022-3093(00)00200-3 ↗
41. Measurement of optical properties of solids
42. Structural relaxation in vitreous materials10.1111/j.1749-6632.1976.tb39688.x ↗
43. Nonmonotonic evolution of density fluctuations during glass relaxation10.1103/PhysRevLett.102.155506 ↗