Laser performance parameters of Yb3+ doped UV-transparent phosphate glasses

A UV-visible-NIR active smart photocatalytic system based on NaYbF4:Tm3+ upconverting particles and Ag3PO4/H2O2 for photocatalytic processes under light on/light off conditions

“…The presence of Yb 3+ ions and/or NIR absorption property of the UCPs is evident from the characteristic absorption peak of Yb 3+ at around 975 nm in the electronic absorption spectrum, obtained by measuring the diffuse reflectance from the powder sample (Fig. 1c, dotted line) 71 . The presence of Yb 3+ thus allows the UCPs to absorb the NIR photons from a 980 nm laser while doping with Tm 3+ ions as the emitters assist in obtaining upconverted light in the UV and visible region of the spectrum (Fig.…”

“…2c, dotted line). 71 The presence of Yb 3+ thus allows the UCPs to absorb the NIR photons from a 980 nm laser while doping with Tm 3+ ions as the emitters assists in obtaining upconverted light in the UV and visible region of the spectrum (Fig. 2c, solid line).…”

Photon Upconversion for Photovoltaics and Photocatalysis: A Critical Review

“…The absorption coefficient of materials encompassing either sensitizer (Yb 3+ or Er 3+ ) is very weak, 5–10 cm –1 typically, , ranging up to 45 cm –1 in the best-performing single-crystals. , There have been attempts to compensate for this via photonic and plasmonic structures − as well as organic dyes that permit sensitization of the Yb 3+ ion in the range of 750–850 nm . However, the majority of these approaches are relevant for NCs, which most likely exhibit weaker absorption (and hence UC emission) than a bulk host.…”

Spectroscopic properties and energy transfer study of Nd 3+ /Yb 3+ co-doped in borosilicate glass for 1.0 μm emission

“…To date, the Nd 3 þ and Yb 3 þ ion are the most popular as the main dopant for a development of high power lasers, tunable lasers and luminescent solar concentrators in the near infrared range [1][2][3]. The Yb 3 þ has the advantage of avoiding upconversion, cross-relaxation, and excited-state absorption processes, which is due to its unique energy level structure, only the ground state 2 F 7/2 and excited state 2 F 5/2 , and the energy interval is about 10,000 cm À 1 [4,5].…”