Lasing properties and their anisotropy of Yb:CaWO4 crystal

Photochromic induced dual‐mode luminescence modulation of CaWO4: Yb3+, Ho3+, Bi3+ ceramics for anticounterfeiting agent

“…CaWO 4 is a typical tungstate luminescent material with unique optical properties and structures, which has been studied and applied in phosphor, laser medium, optical fiber, gas sensor, and other fields. [28][29][30][31] Photochromic CaWO 4 : Yb 3+ , Er 3+ , Bi 3+ phosphors achieve reversible dual mode luminescence modification in our previous research ,11 the powder is patterned through screen printing. However, not all powders can be screen printing, which limits application in anticounterfeiting storage.…”

“…Therefore, the CaWO 4 : Yb 3+ , Ho 3+ , Bi 3+ ceramic was prepared to realize the reversible regulation of photoluminescent and photochromism by light stimulation. CaWO 4 is a typical tungstate luminescent material with unique optical properties and structures, which has been studied and applied in phosphor, laser medium, optical fiber, gas sensor, and other fields 28–31 . Photochromic CaWO 4 : Yb 3+ , Er 3+ , Bi 3+ phosphors achieve reversible dual mode luminescence modification in our previous research, 11 the powder is patterned through screen printing.…”