Atmospheric aging and surface degradation in As2S3 fibers in relation with suspended-core profile

Mouawad, O.; Vitry, Pauline; Strutynski, Clément; Picot-Clémente, J.; Gadret, Grégory; Jules, Jean‐Charles; Lesniewska, Éric; Smektala, F.

doi:10.1016/j.optmat.2015.02.026

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…Its average coordination number is Z = 2.53, thus the network should be somewhat overconstrained and age slowly. It has a T g of 311°C [85], much higher than common As-based ChGs (the T g 's of As 2 S 3 and As 40 Se 60 are 210°C and 187°C [18,86], respectively), which implies reduced aging at room temperature essential for practical device applications. The refractive index of thermally evaporated GSS is approximately 2.22 at 1550 nm, and the expected composition post-evaporation is Ge 23 Sb 11 S 66 [87].…”

Section: Methodsmentioning

confidence: 99%

“…Annealing below the glass transition temperature (T g ) allows them to settle to a more thermodynamically favorable state [13][14][15][16]. Exposure to air leads to water absorption or oxide formation on the surface of the glass [17][18][19][20]. Therefore, understanding the interplay between glass processing and aging kinetics is an important topic for ChGs.…”

Section: Introductionmentioning

confidence: 99%

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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: Methodsmentioning

confidence: 99%

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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“…In recent years, a great deal of interest has been given to chalcogenide glasses for their applications in the field of electronics, optical imaging, optical data storage, integrated optics and infrared optics [1][2][3]. These applications were attributed to low phonon energies, their excellent transmittance in the infrared (IR) region and ease of fabrication [4][5][6][7][8]. The Zn-Se binary glass has gained much attention due to being a wide band gap II-VI semiconductor with a gap of 2.8 eV.…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing temperature on the structural and optical properties of Ge15Se75Zn10 thin films

Alwany

Youssef

Algradee

et al. 2021

PAC

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Ge15Se75Zn10 thin films were deposited onto cleaned glass substrates by the vacuum thermal evaporation technique. The as-deposited and annealed thin films were characterized by scanning electron microscopy, X-ray diffraction and optical spectroscopy. The average particle sizes of the crystallized GeSe and ZnSe phases increase with increasing annealing temperature. Some optical parameters of the as-deposited and annealed Ge15Se75Zn10 thin films were studied using both transmittance T(?) and reflectance R(?) measurements. The analysis of T(?) and R(?) data revealed the existence of direct optical band gap (EG) and the corresponding values were calculated to be 2.913, 2.802 and 2.692 eV for the as-deposited and annealed thin films at 373 and 423 K, respectively. The dispersion of the refractive index is discussed in terms of the single oscillator Wemple-Didomenico (WD) model. The width of band tails of localized states (Ee), the single oscillator energy (E0), the dispersion energy (Ed), the high frequency dielectric constant (?L) and the steepness parameter (S) were estimated.

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Supercontinuum Generation in Tellurite Optical Fibers

Gadret

Jules

Kibler

et al. 2017

Technological Advances in Tellurite Glasses

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Atmospheric aging and surface degradation in As2S3 fibers in relation with suspended-core profile

Cited by 9 publications

References 31 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

Effect of annealing temperature on the structural and optical properties of Ge15Se75Zn10 thin films

Supercontinuum Generation in Tellurite Optical Fibers

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