Pr:Ca1-xRxF2+x (R=Y or Gd) crystals: Modulated blue, orange and red emission spectra with the proportion of R3+ ions

Neodymium Cluster Evolution in Fluorite Laser Crystal: A Combined DFT and Synchrotron X-ray Absorption Fine Structure Study

“…For example, the broadband materials of neodymium-doped glasses, , Ti:sapphire, Yb:YAG, Yb:S-FAP, and Yb:CaF 2 are widely adopted as gains in the ultrafast laser facilities. Recently, a large number of works on the ultrafast operations realized in the rare-earth-doped alkaline-earth fluoride crystals have been reported. − It is because the rare-earth-doped fluorites have very broad emissions. ,− Due to the charge compensation effect, about twenty kinds of clusters were detected in the crystals . Various clusters and multisite characteristics make the photoluminescence inhomogeneously broadened, which makes the rare-earth-doped fluorites promising candidates for the generation of ultrashort pulses.…”

Synthesis and luminescence characterization of Pr3+, Gd3+ co‐doped SrF2 transparent ceramics

“…These values are comparable to Pr 3+ -doped fluoride crystals as well as other optical materials. 25,[35][36][37] It is clear that the fluorescence lifetimes of both blue (483 nm) and orange (605 nm) emissions decrease while the Pr 3+ doping concentrations increasing from 0.2 to 2.0 at.%. It is known that the energy loss can be attributed to the nonradiative ET (energy transfer) process containing of cross-relaxation and multi-phonon relaxation.…”

“…Additionally, Metz et al defined that Pr 3+ could achieved green laser operation in Pr:KY 3 F 10 , and the highest output power of 121 mW was achieved at an emission wavelength of 554 nm with a slope efficiency of 27% . Furthermore, Su et al reported the optical properties of Pr:CaF 2 single crystals, and the effective laser operations were realized . The Gd 3+ and Y 3+ ions were incorporated into CaF 2 crystal lattice to obtain enhanced emission properties and fluorescence lifetimes of Pr 3+ ions.…”

“…24 Furthermore, Su et al reported the optical properties of Pr:CaF 2 single crystals, and the effective laser operations were realized. 25,26 The Gd 3+ and Y 3+ ions were incorporated into CaF 2 crystal lattice to obtain enhanced emission properties and fluorescence lifetimes of Pr 3+ ions. In this paper, highly optical quality Pr 3+ , Gd 3+ co-doped SrF 2 transparent ceramics were firstly prepared by hot-pressing of nanopowders.…”

Influence of Na+, Ca2+ and R3+ (R = Y, Lu, Gd) co-doping on the spectroscopic properties of Pr3+:BaF2 single crystal

“…Besides, trivalent rare earth ionsdoped MeF 2 have been used in various fields due to its low refractive index, high thermal conductivity, and relatively good compatibility. [21][22][23] In rare earth ions-doped MeF 2 crystals, in order to maintain the balance of system charge, the isolated centers such as O h , C 4v and C 3v , and [RE 3+ -RE 3+ ] clusters will appear by the function of interstitial F − . 24 Compared to other fluorides, the optical properties of rare earth ions-doped BaF 2 crystals are rarely studied.…”