Journal ArticleDOI
Optical glasses for ir transmittance
TLDR
The properties of chalcogenide glasses that are most important for applications as infrared transmitting materials are reported and their mutual relationships are given in this paper, where the requirements for the intrinsic transmission of the materials and the reasons for their limitation are discussed.Abstract:
The properties of chalcogenide glasses that are most important for applications as infrared transmitting materials are reported and their mutual relationships are given. The requirements for the intrinsic transmission of the materials and the reasons for their limitation are discussed. Based on structural interpretations of the optical parameters, combinations of glasses for the apochromatic correction of objectives are proposed. The relations between thermal properties, mechanical strength and stress-induced birefringence are shown and suitable compromises for proper applications are deduced.read more
Citations
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Journal ArticleDOI
IR impurity absorption in Sb2S3–GeS2(Ge2S3) chalcogenide glasses
TL;DR: In this article, the compositional dependences of the measured IR spectra connected with influence of O-, H- and C-based absorbed impurites are analyzed, and the authors show that O-, C-and H-based impurite influence on the IR optical transmission spectra in the chalcogenide glasses (ChG) of the ternary Ge-Sb-S system of stoichiometric Sb 2 S 3 -GeS 2 and non-stochastic Sb S 3 −GeS 3 compositions.
Journal ArticleDOI
Photonic bandgap confinement in an all-solid tellurite-glass photonic crystal fiber.
Joris Lousteau,Gerardo Cristian Scarpignato,Giorgos S. Athanasiou,Emanuele Mura,Nadia Giovanna Boetti,Massimo Olivero,Trevor M. Benson,Phillip Sewell,Silvio Abrate,Daniel Milanese +9 more
TL;DR: The model identifies the bound modes of the structure and provides confirmation of experimentally observed mode field profiles and the experimental fiber attenuation spectrum displays clear bandgap confinement regions whose positions are confirmed by modeling the guiding properties of the ideal geometry using a plane-wave expansion method.
Journal ArticleDOI
Unravelling interrelations between chemical composition and refractive index dispersion of infrared-transmitting chalcogenide glasses.
TL;DR: It is experimentally demonstrated that a doublet lens configuration consisting of convex and concave lenses with low and high ν values, respectively, is able to reduce the optical aberrations, thus facilitating completion of the LWIR Abbe diagram.
Journal ArticleDOI
Moldable multispectral glasses in GeS2–Ga2S3–CsCl system transparent from the visible up to the thermal infrared regions
Antoine Bréhault,Laurent Calvez,Philippe Adam,Joël Rollin,Michel Cathelinaud,Bo Fan,Odile Merdrignac-Conanec,Thierry Pain,Xianghua Zhang +8 more
TL;DR: In this article, two glasses with different chromatic dispersion, necessary for the design of an optical system, are developed and characterized, and their ability to be molded into complex optics without crystallization and with excellent roughness is demonstrated.
References
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Journal ArticleDOI
Infrared absorption of some high-purity chalcogenide glasses☆
TL;DR: In this paper, new compouning techniques were devised to prepare high-purity Ge28Sb12Se60 (TI 1173) and Ge33As12Se55 TI 20).
Journal ArticleDOI
Verres formes par les sulfures L2S3 des terres rares avec le sulfure de gallium Ga2S3
TL;DR: In this article, the formation of glasses in the systems L 2 S 3 Ga 2S 3 (L = Y and La to Er, and La-to-Er, except Eu).
Journal ArticleDOI
Refractive index of chalcogenide glasses over a wide range of compositions
L.G Aio,A.M Efimov,V.F Kokorina +2 more
TL;DR: In this article, a comparison of optical constants of chalcogenide glasses with those for other optical materials by means of constructing an Abbe-type diagram in n 2.0 − v2.0 coordinates is considered.
Journal ArticleDOI
An EXAFS structural approach of the lanthanum-gallium-sulfur glasses
S. Benazeth,S. Benazeth,M.H. Tuilier,M.H. Tuilier,A.M Loireau-Lozac'h,H. Dexpert,P. Lagarde,Jean Flahaut +7 more
TL;DR: In this paper, a structural model is proposed as a covalent network of GaS4 tetrahedra, intercalated by the essentially ionic LaS channels.
Journal ArticleDOI
The interdependence of physical parameters for infrared transmitting glasses
A.R. Hilton,D.J. Hayes +1 more
TL;DR: In this paper, the interdependence between chemical composition and the magnitudes of physical parameters related to their use as infrared optical materials was investigated, including density, volumeexpansion coefficient, glass-transition temperature, thermal conductivity, elastic moduli, and Poisson's ratio.
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