Near-Infrared Luminescence and Single-Mode Laser Emission From Nd3+ Doped Compound Glass and Glass Microsphere

Abstract

In this letter, an Nd 3+-doped compound fluorosilicate glass was successfully fabricated with the method of melt-quenching. Under the excitation of a 808 nm laser, enhanced near-infrared photoluminescence emission at the range from 1,065 to 1,140 nm was observed in the glass sample. To characterize its stability and resistance to environmental effects, transmission spectra at the range of NIR-MIR were measured under different environments, including humidity and temperature. In addition, the obtained fluorosilicate glass was also developed as a microsphere resonator by using CO 2 laser heating method. When the diameter of the microsphere was controlled at 61.5 µm, coupling with a tapered fiber, single-multimode lasing in the wavelength range λ1,056-1,071 nm was achieved with a low lasing threshold of 1.5 mW. Compared to silica and phosphate glasses, this fluorosilicate glasses have lower phonon energy, which can reduce the probability of non-radiative transitions and improve the photoluminescence efficiency. Therefore, using it as the raw material, the developed microsphere resonator offers a high transition temperature and with a low lasing threshold, which are promising it for high performance sensing and detection applications.

Effect of Nd3+ Doping on Structural, Near-Infrared, and Cathodoluminescent Properties for Cadmium Tantalate Phosphors

“…The decrease in PL density may be associated with higher Nd 3+ concentrations (or beyond 5% mol), which promotes the migration of excitation energy between active ions (22,40). As Nd 3+ concentration continues to increase, cross-relaxation mechanism between Nd 3+ -Nd 3+ ions becomes more and more important, and therefore non-radiation transitions will be more likely to occur due to the nearness between the Nd 3+ ions (17).…”

“…Among RE 3+ (trivalent) ions, Nd (neodymium) is one of the earliest RE 3+ ions used in solid-state lasers. Therefore, Nd 3+ activated materials are wellknown as solid-state phosphors due to their laser emissions at beneficial wavelengths such as 4 F3/2→ 4 I9/2 transition and also the other possible transitions 4 F3/2→ 4 I15/2, 4 F3/2→ 4 I13/2 and 4 F3/2→ 4 I11/2 (15)(16)(17)(18)(19)(20)(21)(22). Among the 4 F3/2→ 4 IJ transitions of Nd 3+ ion, the 4 F3/2→ 4 I9/2 transition at 880 nm finds application as a powerful diode laser transition.…”

Evaluation of the Structural, Near-Infrared Luminescence, and Radioluminescence Properties of Nd3+ Activated TTB-Lead Metatantalate Phosphors

“…Therefore, the RE ion activated phosphors lead to numerous innovations in the development of new generation devices in various fields such as screen-display technology, lighting technology, and optical data communication due to some positive features such as long life, energy saving, improved physical durability, small size, fast switching, high efficiency, and environmental friendliness (1- 19). The trivalent neodymium ion (Nd 3+ ), one of the oldest trivalent lanthanide ions used in solid-state laser, is well known for its useful laser transitions such as F3/2→ 4 I9/2, 4 F3/2→ 4 I11/2, and 4 F3/2→ 4 I13/2 (20)(21)(22)(23)(24)(25)(26)(27)(28)(29). The 4 F3/2→ 4 I9/2 transition at 880 nm finds application as a powerful diode laser transition while the 4 F3/2→ 4 I11/2 transition stands out due to its easily operated at room temperature and pumped efficiently by flash lamp (29).…”

Low‐alkali borosilicate glass microspheres from waste cullet prepared by flame synthesis

“…[35][36][37] GM are also considered for hydrogen storage, 30,[38][39][40][41] energy-saving applications (thermal insulation), and also as luminescent or reflective materials. [42][43][44] Recently GM have proven to be versatile biomaterials. [45][46][47] GM are favorable for the manufacture of complexshaped glass articles by additive manufacturing (AM) technologies.…”

“…These properties make them advantageous in aviation and the automotive industry, 34 and construction 35‐37 . GM are also considered for hydrogen storage, 30,38‐41 energy‐saving applications (thermal insulation), and also as luminescent or reflective materials 42‐44 . Recently GM have proven to be versatile biomaterials 45‐47 …”