Rare Earth Doped Glasses/Ceramics: Synthesis, Structure, Properties and Their Optical Applications

Abstract

Glasses, glass-ceramics and ceramics belong to three important classes of engineering materials, which are useful in numerous multifunctional and industrial applications [...]

Optical, vibrational, and photoluminescence properties of holmium‐doped boro‐bismuth‐germanate glasses

“…T A B L E 1 Absorption wavelengths (nm), their corresponding transitions from 5 respectively. Even with an increase in the Ho 2 O 3 content from 0.1 to 2.0 mol%, there is no noticeable change in the emission profiles.…”

“…For instance, borate glasses have high phonon energy and low density which would limit them in using for practical applications such as efficient light emitters and scintillators [3,7,13], whereas bismuth-rich glasses exhibit poor transparency despite a good density restricts many photonic applications [2,13]. Germanate glass has a disadvantage in the form of a high melting point despite its superior thermal stability, chemical durability, and relatively low phonon energy [5,8,13,14].…”

“…Rare-earth (RE 3+ )-doped oxide glasses, particularly boron (B)/ bismuth (Bi)/germanium (Ge)-rich glasses, were explored for optical fibers, solid-state lasers, sensors, solar energy converters, waveguides, eye-safe lasers, display devices, scintillators, military, biomedical devices, optical refrigeration, optical data storages, etc., owing to their excellent physical and chemical stability, relatively moderate melting point (800-1400 C), low non-linear refractive index, low-to-moderate phonon energy (700-1400 cm À1 ), decent density range (3-5 g/cc), good RE 3+ ion solubility, and interesting luminescence properties [1][2][3][4][5][6][7][8][9][10][11][12]. However, these glasses have their disadvantages.…”

Green- and Blue-Emitting Tb3+-Activated Linde Type A Zeolite-Derived Boro-Aluminosilicate Glass for Deep UV Detection/Imaging

“…There is ongoing research on the luminescence properties of rare earth-doped glasses and ceramics [1,2] potentially suitable for applications concerning lighting [3], displays [4,5], X-ray scintillation [6], increasing the efficiency of solar cells [7,8], and UV detection and imaging [9]. Emission in such materials is the result of optical transitions attributed to energy levels of 4f-electrons of rare earth ions (e.g., 4f 8 (for Tb 3+ ), 4f 7 (for Gd 3+ ), 4f 6 (for Eu 3+ ), and 4f 12 (for Tm 3+ )) [10].…”

Modification of free-volume defects in the GaS2–Ga2S3–CsCl glasses

“…Development of IR photonics has posed a problem of finding new functional media for the efficient transmission of electromagnetic radiation of a wide spectral range, as well as the production of technologies for various instrument applications including sensors, optical waveguides, fibers, resonators, detectors, amplifiers, signal converters, etc. [1][2][3][4][5][6]. Significant successes in this field are associated with the possibility of chemical-technological modification of elements based on chalcogenide glasses GeS 2 -Ga 2 S 3 through components that give new properties [7][8][9][10][11].…”