Fluoride glasses optical properties

Optical transmission is an essential physical characteristic of halide glasses in the sense that, except for beryllium-based fluoride glass, this property differentiates... 

This paper reviews the optical properties of undoped and activated fluoride glasses for the period 1985-1998. First, the infrared transmission, Rayleigh scattering, and refractive indices of several fluoride glasses are given and discussed. For the sake of completeness, fundamental physical characteristics such as thermo-mechanical properties are also given, although they may have been published before this period. 

Active optical properties of rare-earth-doped fluoride glasses... 

The optical properties of Pr3+ ions have been studied in various fluoride glasses based on zirconium [31,43,45-47], on indium [31,43,48,49] or on zinc fluorides [48,50]. 

In the last few years, only a few studies have been devoted to the optical properties of Sm3+ ions in fluoride glasses [138,139], The main result concerns the excitation of the 4G5/2 level by a three-fold up-conversion process including a direct two-photon absorption mechanism. Izumitani et al. have succeeded in stabilizing divalent samarium in fluoroaluminate and fluorohafnate glasses [140], Absorption spectra reveal a strong 4f - 5d transition whose maximum is located around 320 nm. Emission of Sm2+ ions in fluoroaluminate glass occurs in the red, between 680 nm and 810 nm, from the 5D0 excited state to the 7Fj (J = 0, 1, 2, 3, 4) levels. 

J. L. Adam, Optical Properties and Applications of Fluoride Glasses, in Advanced Inorganic Fluorides , eds. T. Nakajima, B. Zemva, and A. Tressaud, Elsevier, New York, 2000, p. 235. 

As a new optical host for active properties fluoride glasses have the following characteristics. 

M, Mortier, A, Bensalah, G, Dantelle, G, Patriarche, D, Vivien, Rare-earth doped oxyfluoride glass-ceramics and fluoride ceramics Sintesis and optical properties. Opt. Mat., 29, 1263-1270 (2005), Patterning of non-linear optical crystals in glass by laser-induced crystallization, J. Am. Ceram. Soc. 90, 699-705 (2007),... 

Heavy-metal fluoride glasses hold a large potential for optical applications in the middle infrared, namely in fiber form as optical waveguides, fiber lasers and sensors, but also in bulk form as prisms, lenses, light pipes or optieal windows. This potential has stimulated extensive research into their structure and properties, but present knowledge is still largely incomplete due to unusual structural characteristics such as... 

Drexhage, M.G., 1987, Optical properties of fluoride glasses, in Halide Glasses for Infrared Fiberoptics, cd. R.M. Almeida (Martinus Nij-hoff, Dordrecht) pp. 219-234. 

Heavy-metal fluoride glasses, into which large amounts of rare earths can be added, possess a great potential for optical applications in the mid-infrared range as fiber optic glasses for communication and transmission of information, optical wave guides, fiber lasers, and sensors. In chapter 101, Professor R.M. Almeida discusses the preparation of these glasses, their structure and chemical and physical properties. He pays particularly close attention to those properties that are critical for their practical use. 

Aggarwal, I.D. and Lu, G. (Eds.) (1991) Fluoride Glass Fiber Optics, Academic Press, Boston. Contains a series of chapters written by leading experts in the field detailing the structure, processing, and properties of fluoride glasses and their application as optical fibers and use in other optical devices. 

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