Development of thermally stable and moldable chalcogenide glass for flexible infrared lenses

Choi, Ju H.; Cha, Du-Hwan; Kim, Jeong-Ho; Kim, Hyejeong

doi:10.1557/jmr.2016.199

Cited by 10 publications

(2 citation statements)

References 10 publications

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“…With their large infrared transparency windows, high nonlinearity, and compatibility with standard microfabrication techniques, ChGs have a wide range of state-of-the-art applications in optics and photonics. They can be easily processed into a wide range of photonic devices such as waveguides [23][24][25][26][27][28][29][30][31][32], Bragg gratings [33,34], resonators [35][36][37][38][39], micro-lenses [40][41][42][43][44], omnidirectional reflectors [45][46][47], and photonic crystals [48][49][50][51]. Their nonlinear characteristics also make them promising candidates for all-optical signal processing [52,53] and nonlinear frequency generation [54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Geiger

Huang

et al. 2019

Opt. Mater. Express

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Chalcogenide glass (ChG) thin films have a wide range of applications in planar photonics that rely on the stability of their optical properties. However, most methods do not provide quantitative optical property data at sufficiently high resolution. We have employed a resonant cavity refractometry technique capable of detecting refractive index changes down to 10 −6 refractive index unit (RIU) to study the aging, or sub-T g structural relaxation kinetics, of Ge 23 Sb 7 S 70 ChG. Our study reveals that the refractive index (RI) change due to aging tends to follow stretched exponential behavior, with stretch exponents and rate of index change dependent on initial glass treatment. Thermally annealed devices show the best stability, suggesting that thermal annealing is the appropriate post-deposition treatment method for obtaining stable ChG films.

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Section: Introductionmentioning

confidence: 99%

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Geiger

Huang

et al. 2019

Opt. Mater. Express

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show abstract

“…Thus studying the relationship between the composition and thermal stability of glassy materials is extremely important because a lot of these materials are needed to stay stable in the amorphous condition, especially for their use as memory devices, which require a long life span; therefore, studying the stability of glass is a topic of great importance [50]. It thus aids in identifying the ideal circumstances for the e ciency of optical device systems prepared from glass materials [51]. A set of parameters that must be de ned in order to assess the thermal stability of glasses were found.…”

Section: Structural Propertiesmentioning

confidence: 99%

Impact of In2O3 content on the structural, thermal, and mechanical hallmarks of Na2O-BaO- ZnO-Fe2O3 -P2O 5 glass systems

Ibrahim,

Khattari,

Mahdy

2024

Preprint

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Six glass compositions in the form 20Na2O–15BaO–10ZnO–(9–x) Fe2O3–xIn2O3–46P2O5 in which 0 ≤ X ≥ 9 mol% were synthesized using a traditional melting method at ambient conditions. In these glass systems, In2O3 was used to partly substitute Fe2O3. The impact of the In2O3 content on the structural, thermal, and mechanical properties of the glasses was investigated. Complete characterizations have been accomplished using XRD, DSC, and measurements of the density and molar volume. Elastic parameters including Poisson's ratio properties were also studied. The XRD patterns reflect the amorphous nature of the examined samples. The measured glass density was linearly increased (3.57–3.83 g/cm3), while the calculated molar volume was linearly decreased (34.48–34.11cm3/mol). The DSC examination points out that the indium ions mostly take part in network-forming positions and increase the rigidity of the glass network. Also, as inferred from the DSC data, the thermo-physical parameters Tg, Tp, and glass stability (∆GS) increased nearly proportionately as In2O3 was added, whereas the heat capacity change (∆Cp) was inversely related. Regarding the mechanical calculations, all elastic parameters decreased as a result of compositional In2O3/Fe2O3 modifications. Overall, these findings offer crucial insights into the intricate interplay between composition and properties in glasses, with potential implications spanning various fields, from materials science to engineering applications

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Effect of ZnO and MoO₃ Addition on Thermal and Mechanical Properties of Tellurite Glasses

Linganna

Park

Choi

2019

Physica Status Solidi (a)

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In the present study, zinc-molybdenum-tellurite glasses are prepared and their thermal, thermo-mechanical, viscous, and mechanical properties for mid-IR molded glass lens applications are studied. From the thermal analysis, it is found that the glass transition temperature, onset crystallization temperature, and stability parameters slightly increase with an increase in ZnO content in both series of glasses. Thermal expansion coefficient decreases from 16.56 to 14.67 Â 10 À6 K À1 as the ZnO content increased from 10 to 30 mol%. For fixed 10 mol% of MoO 3 content, Knoop hardness slightly decreases from 3009 to 2842 MPa as ZnO content increases from 10 to 30 mol% whereas it increases for 20 mol% of MoO 3 . The results indicate that the addition of ZnO and MoO 3 contents into the tellurite glass system increases bridging oxygen contribution and in turn network compactness of tellurite matrix.

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Development of thermally stable and moldable chalcogenide glass for flexible infrared lenses

Abstract: Abstract

Cited by 10 publications

References 10 publications

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Impact of In2O3 content on the structural, thermal, and mechanical hallmarks of Na2O-BaO- ZnO-Fe2O3 -P2O 5 glass systems

Effect of ZnO and MoO₃ Addition on Thermal and Mechanical Properties of Tellurite Glasses

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Development of thermally stable and moldable chalcogenide glass for flexible infrared lenses

Abstract: Abstract

Cited by 10 publications

References 10 publications

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Understanding aging in chalcogenide glass thin films using precision resonant cavity refractometry

Impact of In2O3 content on the structural, thermal, and mechanical hallmarks of Na2O-BaO- ZnO-Fe2O3 -P2O 5 glass systems

Effect of ZnO and MoO3 Addition on Thermal and Mechanical Properties of Tellurite Glasses

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Product

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Effect of ZnO and MoO₃ Addition on Thermal and Mechanical Properties of Tellurite Glasses