Inorganic Glasses for Pulsed-Laser Based Waveguide Engineering for Integrated Optics

Jha, Animesh; Irannejad, Mehrdad

doi:10.1016/b978-0-12-819728-8.00014-0

Cited by 1 publication

(1 citation statement)

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“…Silicate-dependent optical glass systems have widespread applications extending from optoelectronics, such as lasers and waveguide transmissions, to the Internet of Things by the principle of optical integration [1]. Rare earth-doped glasses have versatile significance in the fabrication of photovoltaic cells [2], light emitting diodes (LEDs) [3], telecommunication systems, remote sensing, bar code reading [4], and fiber optic * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

Gracie

Geetha²,

Battisha³

2023

J. Phys. D: Appl. Phys.

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Silica phosphate glasses strengthened with calcium oxide modifier and doped with different concentrations (0%, 0.5%, 1%, 1.5 mol%) of praseodymium (Pr3+) were synthesized by sol-gel method. The absence of sharp peaks in the x-ray diffraction (XRD) spectra confirms non-crystallinity of the glasses. Higher doping indicates increasing optical band gaps due to Burstein Moss shift, which also reflects on structural disorders at the absorption tails as validated by Urbach’s rule. The density increases with a subsequent decrease in oxygen packing density, proving the mechanical and chemical stability of the glasses. The composite glasses are multifunctional with marked absorption at 280 nm predicting its purpose as UV shielding films. Luminescence corresponding to the intra 4f transition, 〖1_D〗_2→〖1_G〗_4 in the IR region, with high transmission and low reflection losses suggests the use of the synthesized glass material for S-band telecommunications, while the radiative process involving 〖3_P〗_0→〖3_F〗_2 yields a predominant red laser source. Commission International de l’Eclairage (CIE) color coordinates observe warmer red emission corresponding to Correlated Colour Temperature (CCT) of 3200 K. The composite silica phosphate glass systems evidence the effective role of Pr3+ for photonic applications.

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