Controlled crystallization of GeS2–Sb2S3–CsCl glass for fabricating infrared transmitting glass-ceramics

Zhu, Shizhen; Ma, Hongli; Matecki, M.; Zhang, Xianghua; Adam, Jean-Luc; Lucas, Jacques

doi:10.1016/j.jnoncrysol.2005.07.016

Cited by 29 publications

(22 citation statements)

References 14 publications

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“…In particular it was shown that chalcogenide systems containing an alkali halide as a nucleating agent could lead to glass–ceramics with improved mechanical properties without significantly affecting the optical properties of the material 10 . An appropriate choice of glass composition and heat treatment allows control of the crystallization process, namely the nucleation rate and the crystal growth 12 . A good control of the crystallite size is critical for optical applications in order to minimize scattering effects and retain a large transparency window.…”

Section: Introductionmentioning

confidence: 99%

Infrared Glass–Ceramics With Fine Porous Surfaces for Optical Sensor Applications

Delaizir

Lucas

Zhang

et al. 2007

Journal of the American Ceramic Society

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GeS2–Sb2S3–CsCl glass–ceramics with fine porous surfaces were synthesized and tested as optical elements. The porosity is obtained through a two‐step process, including controlled nucleation of CsCl nuclei in the glass matrix followed by selective etching of the nuclei with an acid solution. The porous surface is several hundred nanometers thick and results in a surface area increase of almost four orders of magnitude. The pores size is approximately 150 nm and can be tailored by controlling the nucleation process and the etching time. It is shown that the creation of the porous surface does not critically affect the optical transmission of these infrared (IR) transparent glass–ceramics. These materials can therefore be used for the design of optical elements and an attenuated total reflexion plate with porous surface was fabricated and tested as an optical IR sensor. The porous element shows higher detection sensitivity in initial experiments with an analyte sprayed at the plate surface and a coating of silane molecules.

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Section: Introductionmentioning

confidence: 99%

Infrared Glass–Ceramics With Fine Porous Surfaces for Optical Sensor Applications

Delaizir

Lucas

Zhang

et al. 2007

Journal of the American Ceramic Society

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“…The transition temperatures T g and crystallization beginning temperature T x are 400 and 510°C, respectively. Based on the DTA results and previous studies [15][16][17], the temperature of 430°C (T g + 30°C) was chosen for crystallization process. The host glasses were heat treated at this temperature for different durations ranged from 5 to 20 h. X-ray diffraction patterns of the crystallized glasses are presented in Fig.…”

Section: Thermal and Structural Characterizationmentioning

confidence: 99%

Preparation and third-order optical nonlinearity of glass ceramics based on GeS2–Ga2S3–CsCl pseudo-ternary system

Shen

Chen

et al. 2011

Journal of Non-Crystalline Solids

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“…In the end the most appropriate glasses are found in mixed compositions between chalcogenides and halides. [11][12][13] The key factors in this delicate chemistry are the following. The formation of the nucleating crystallites is governed by coulombic lattice energy formation of the nuclei, which is usually an ionic species such as an alkali halide, for example, CsCl or KCl or occasionally a sulfide.…”

Section: From Glass To Crystal: Composite Glass-ceramics Materialsmentioning

confidence: 99%

Glasses for Seeing Beyond Visible

Zhang

Bureau

Lucas

et al. 2007

Chemistry A European J

137

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Conventional glasses based on oxides have a transparency limited by phonon absorption in the near IR region and have a limited interest for analyzing information located far beyond the visible. The IR spectral domain is nevertheless of prime interest, since it covers fundamental wavelength ranges used for thermal imaging as well as molecular vibrational signatures. Besides spectacular advances in the field of IR detectors, the main significant progresses are related to the development of IR glass optics, such as lenses or IR optical fibres. The field of IR glasses is almost totally dominated by glasses formed from heavy atoms such as the chalcogens S, Se and Te. Their transparency extends up to 12, 16 and 28 microm for sulfide-, selenide- and the new generation of telluride-based glasses, respectively. They cover the atmospheric transparency domains, 3-5 and 8-13 microm, respectively, at which the IR radiation can propagate allowing thermal imaging and night-vision operations through thick layers of atmosphere. The development of new glass compositions will be discussed on the basis of structural consideration with the objective of moulding low-cost lenses for IR cameras used, for instance, in car-driving assistance. Additionally, multimode, single-index, optical fibres operating in the 3 to 12 microm window developed for in situ remote evanescent-wave IR spectroscopy will also be mentioned. The detection of molecular IR signatures is applied to environmental monitoring for investigating the pollution of underground water with toxic molecules. The extension of this technique to the investigation of biomolecules in three different studies devoted to liver tissues analysis, bio-film formation, and cell metabolism will also be discussed. Finally we will mention the developments in the field of single-mode fibres operating around 10 mum for the Darwin space mission, which is aiming at discovering, signs of biological life in telluric earth-like exoplanets throughout the universe.

show abstract

Controlled crystallization of GeS2–Sb2S3–CsCl glass for fabricating infrared transmitting glass-ceramics

Cited by 29 publications

References 14 publications

Infrared Glass–Ceramics With Fine Porous Surfaces for Optical Sensor Applications

Infrared Glass–Ceramics With Fine Porous Surfaces for Optical Sensor Applications

Preparation and third-order optical nonlinearity of glass ceramics based on GeS2–Ga2S3–CsCl pseudo-ternary system

Glasses for Seeing Beyond Visible

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