Catalyzed gelation of amorphous sulphides

Optical spectroscopy of Nd3+ ions in a nanostructured glass matrix

“…Glass systems codoped with rare earth (RE) ions and semiconductor nanocrystals (NCs) have attracted great research interest because of their applications in optical systems [1][2][3]. The influence of semiconductor NCs on the radiative properties of RE ions has been demonstrated, particularly with Eu 3 þ , Tb 3 þ , Er 3 þ , Pr 3 þ and Nd 3 þ [4][5][6].…”

Non-Toxic Sulfide Glasses and Thin Films for Optical Applications

“…Chalcogenide glasses have important characteristics including optical nonlinearity, 12) electrooptic and acousto optics 13) properties, and crucially a transmission range which extends to wavelengths far beyond the range of silica and many other glasses. Passive and active applications 3) include IR transmitting optical fibers, infrared windows and lenses for use in thermal and infrared laser systems, medical applications such as endoscopy using mid infrared (Er: YAG`2.9 mm) lasers, telecommunications devices exploiting the materials unique spectroscopic properties or, for other applications such as high speed switching exploiting the materials high optical nonlinearity, to name only a few examples. In addition, there are the potential for new, relatively unexplored applications.…”

“…Chalcogenide glasses have been formed into op tical lenses 1) and fibers 2) and other optical devices for applica tions in both the visible and near IR to IR. Chalcogenide materials are recently of particular interest for IR laser power transmission in the wavelength region of 1 to 5 mm, 3) fiber am plifiers for telecommunication, 4) phosphors for high density spectral holeburning, 5) and nonlinear optical fibers for allop tical switching. 6) In the past, many of these applications have depended on arsenic or selenium based chalcogenides, ele ments who toxicity can prove hazardous.…”

Nd Solubility in RS-Ga2S3 (R=Sr, Ba) Glasses

“…1) Until now, RE solubility is evaluated with various experimental techniques, e.g., optical absorption 2) and uorescence 3) measurements, Raman spectroscopy, 4) electron microscopy 5) and ber loss. 6) We have studied previously the formation and structure of vitreous RSGa 2 S 3 , where RCa, Sr, Ba.…”