Infrared-laser-induced upconversion fromNd3+:LaF3

Ultraviolet and violet upconversion luminescence in Ho3+-doped Y2O3 ceramic induced by 532-nm CW laser

“…Potential applications in environmental sciences, medicine, photolithography, material processing, and high-density optical data storage have stimulated the development of solid-state lasers working in the ultraviolet (UV) spectral range [1,2]. Frequency upconversion (UC) is one method to produce short wavelength laser, pumped with relatively longer wavelength laser through intrinsic energy level matching of certain rare-earth ions [3].…”

Ultraviolet and blue up-conversion fluorescence of NaY0.793−xTm0.007Yb0.2GdxF4 phosphors

“…For benefits of intrinsic energy levels matching of certain rare earth (RE) ions and ample availabilities of laser diodes (LDs) in IR range, frequency UC is an important process in optical generation within RE-doped materials. RE-doped up-converted materials have been widely studied because of their potential applications, such as optical data storage, color displays, IR sensors, environmental monitoring, biosensors, and so on [1][2][3][4][5]. Gd 3+ compounds, such as Gd 2 SiO 5 [6], Gd 2 O 3 [7], LiGdF 4 [8], and GdBO 3 [9], have a wide range of applications and are extensively studied and used where Gd 3+ ions serve as host material ions, activator ions, or sensitizer ions.…”

Unique ultraviolet upconversion emissions of BaGd2ZnO5:Yb3+, Pr3+

“…In recent years, short-wa velength lasers in the spectral range of ultraviolet (UV) have attracted much attention owing their potential applications in biological engineering, food security, display technology, optical data storage, environmental monitoring, and so on [1][2][3][4][5][6][7][8]. However , short-wa velength solid-state lasers widely applied now have a limited development because of their strict phase matching condition .…”