Broadband near-infrared luminescence and tunable optical amplification around 1.55μm and 1.33μm of PbS quantum dots in glasses

Excitation wavelength-dependent near-infrared luminescence from Bi-doped silica glass

“…Optical materials featured in broadband emission in the new spectral wavelength region have attracted lots of interests in both materials and optics communities, since they could be used to develop new types of devices, such as broadband optical fiber amplifiers and tunable lasers [1][2][3]. Since the discovery of broadband near-infrared (NIR) luminescence from Bi-doped silica glass in 2001 [4], many efforts have been devoted to Bi-doped glasses and devices [5][6][7][8][9][10].…”

Glass-ceramics for photonic devices

“…So the broadband amplification in the whole telecommunication region by using only a single fiber would be expected to simplify the configuration of optical amplifiers and revolutionize the present telecommunication systems. Recently, we have demonstrated that Ni ions, 22),25),27),29) Cr 4+ ions 16) and PbS QDs 32) doped GCs are promising candidates for such application.…”

“…55) We used PbS QDs doped GCs to realize controllable NIR luminescence, and optical amplification at third (1.55¯m) and second (1.33¯m) communication windows. 32) The SiO 2 B 2 O 3 K 2 OBaOZnO glass system with 1 and 1.5 mol % PbS (labeled as P1 and P1.5) were prepared using the melt-quenching method. ZnS and PbO are also used to replace PbS as starting materials in another sample (labeled as Z2) for comparison.…”

“…The detailed explanations can be found in. 32) The optical amplified signals at 1.55¯m of PbS QDs doped GCs are measured by the traditional two-wave mixing configuration for the first time. In P1 GCs, when the excitation power is directed as 730 mW, the optical gain, g is about 1.26.…”

Structural and photoluminescent properties of the MgGa2O4:Co2+ ceramic compound revisited after two decades

“…This causes a direct impact on the production cost, with raw material economy resulting in optimized financial costs, also being environmentally friendly. Transition metals and rare earth doped materials exhibit such features, being widely used in several applications as solid-state lasers [1,2], scientific research [3,4], medicine and dosimetry [5][6][7], and sensing and optical communications [8], just to name a few examples.…”