Vacuum ultraviolet emission bands of LiLuF4:Tb3+ crystals in the spectral range from 157 to 200 nm

Luminescence study of the 4f25d configuration of Nd3+ in LiYF4, LiLuF4 and BaY2F8 crystals

“…A localized 4 K 11/2 (5d) state is created in the bottom of the 4f 2 5d configuration and its effects on the emission structure increases with the crystalline field strength. YLF, LLF and BaYF crystals doped with low concentration of Nd 3+ ions ($1 mol %) can be effectively excited by three photons in the green and blue region with an intensity below the damage threshold (2.2 GW/cm 2 ) and can be used as an alternative way of pumping Nd-doped fluoride materials to generate laser action at the ultraviolet region Table 1 Peak position (cm À1 ) of the narrow emissions superposed to the broadband emission at 262 nm obtained from the localized states of 4 K 11/2 (5d) manifold of the 4f 2 5d configuration of Nd 3+ ions in YLF, LLF and BaYF crystals at 300 K Narrow emissions from Stark levels of 4 All luminescence measurements were done with the sample inside of a vacuum chamber under 1 Â 10 À5 Torr connected to the VUV monochromator (with an optical resolution of 0.05 nm at first order). (185, 230 and 262 nm) at room temperature.…”

“…Recently, the UV and VUV fluorescence of RE 3+ ions in solids has been intensively investigated because of the growing applications in this spectral range, such as generating and detecting VUV radiation [3,4]. The UV and VUV fluorescence have been investigated in heavy [5] and light lanthanides in fluoride crystals [6].…”

“…The narrow structure superposed to the broad emission represented by Gaussian function (dashed line) is shown. Six narrow lines(1)(2)(3)(4)(5)(6) are related to the 4 K 11/2 (5d) to the 4 G 5/2 state of the 4f 3 configuration. (*) Peak is related to the downward transition toFig.…”

Spectroscopic properties of Yb3+: LuLiF4 crystal grown by the Czochralski method for laser applications and evaluation of quenching processes: a comparison with Yb3+: YLiF4

“…LLF host material doped with different rare earth Pr 3+ , Ce 3+ or Nd 3+ was investigated mainly as scintillators or tunable UV solid-state laser [4][5][6][7][8][9]. More recently, LLF doped with Tb 3+ was also considered as new VUV light source for lithographic applications [10].…”

Terbium doped LiLuF4 nanocrystal scintillator-based flexible composite film for high resolution X-ray imaging

“…In the elds of white LED, yellow laser and vacuum ultraviolet emission, it shows certain research value and application potential. [26][27][28][29][30] However, as far as we know, there are few reports on the scintillation properties of this material and the development of related exible devices. In order to explore exible scintillation materials with simple preparation method and high spatial resolution of X-ray imaging, we investigated the related properties of LiLuF 4 :Tb nanocrystalline materials.…”