GeS2–In2S3–CsI Chalcogenide Glasses Doped with Rare Earth Ions for Near- and Mid-IR Luminescence

Abstract

Chalcogenide glass has been considered as a promising host for the potential laser gain and amplifier media operating in near- and mid-IR spectral region. In this work, the IR luminescence spectra of rare earth ions (Tm3+, Er3+, and Dy3+) doped 65GeS2–25In2S3–10CsI chalcogenide glasses were measured under the excitation of an 808 nm laser diode. To the best of our knowledge, it firstly provides the luminescence spectra of a full near- and mid-IR spectral range from 1 to 4 μm in rare earth ions doped chalcogenide glasses. The results of absorption spectra, luminescence spectra, and fluorescence decay curves were obtained in these samples with singly-, co- and triply-doping behaviors of Tm3+, Er3+, and Dy3+ ions. In order to search possible efficient IR emissions, the luminescence behavior was investigated specifically with the variation of doping behaviors and dopant ions, especially in the samples co- and triply-doped active ions. The results suggest that favorable near- and mid-IR luminescence of rare earth ions can be further modified in chalcogenide glasses through an elaborated design of doping behavior and optically active ions.

Mechanical Alloying and Concentration Quenching of the Luminescence of Pr3+ Ions in Chalcogenide Glass

“…Chalcogenide glasses containing rare earth ions (REIs) have recently been intensively studied as active optical materials for mid-IR fiber optics [1,2] for remote sensing of gases and chemical pollutants. This interest also arises from the fact that this spectral region contains characteristic vibrations of most biomolecules, making it relevant for biomedical applications [3,4].…”

Structure and Luminescent Properties of Glasses in the GeS2-Ga2S3-Sb2S3:Pr3+ System

“…Chalcogenide glasses are of interest not only as passive optical materials, but also as active luminescent media for the IR range if doped with rare earth ions (REIs). These materials are especially interesting for the development of optically active fibers suitable for the IR region [ 2 , 3 ]. This is due to the rather large optical losses in chalcogenide fibers (the best value is 12 dB/km in a multimode As 2 S 3 fiber) [ 4 ], and, accordingly, the need for amplification when transmitting a signal over relatively long distances [ 5 ].…”

Enhanced frequency upconversion in Er3+–Yb3+codoped heavy metal oxides based tellurite glasses

“…The tellurite based glasses possess high refractive index, better thermal stability as well as chemical durability as compared to fluoride and chalcogenide glasses. They have high RE ions solubility and lower melting temperature as compared to borate, phosphate and silicate glasses [17][18][19][20][21][22][23][24][25]. Table 1 shows the comparison of tellurite based glasses to other glasses in terms of phonon energy, refractive index and melting temperature.…”