Impulsive SRS in tetragonal t-YVO₄, t-GdVO₄and monoclinic m-LaVO₄vanadate host-crystals for Ln³⁺-lasant ions

Abstract

Tetragonal t‐YVO4, t‐GdVO4 and monoclinic m‐LaVO4 are widely known as host‐matrix materials for Ln3+‐lasant ions in high‐gain SRS‐active crystals. In this study, many phonon impulsive stimulated Raman scattering (ISRS) was excited under femtosecond pumping for these materials. All of the observed χ(3)‐non‐linear lasing components were attributed to the vibrations of the [VO4]3− structural units of these vanadates. The article gives a short review (in table form) of all known SRS‐active crystals with tetragonal zircon‐type (ZrSiO4) and monazite‐type (CePO4) structure and their observed χ(3)‐nonlinear optical effects.

Investigations of the Spin-Hamiltonian Parameters and Defect Structure for the (TiO4)5− Tetrahedral Clusters in ZrSiO4: Ti3+ Crystal

“…They are taken as the adjustable parameters determined by fitting the experimental spin-Hamiltonian parameters with the above formulas. The calculations indicate that the good fit of the observed spin-Hamiltonian parameters of the (TiO4) 5− cluster in ZrSiO4: Ti 3+ crystal requires f  0.732, ) ( 4 R A  996 cm −1 , Δ  −2.9,   0.57 (7) The calculated spin-Hamiltonian parameters g//, g⊥, 47 A//, 47 A⊥, 49 A//, and 49 A⊥ along with the experimental values are given in Table 1.…”

“…It can be used as the Raman or Infrared spectroscopy-based pressure sensor [2,3] (because its Raman shifts and IR spectra are highly sensitive to the pressure applied) and the matrix material of ceramic pigment [4,5]. Importantly, ZrSiO4 and materials with zircon-type structure doped with transition (d n ) and rare earth (4f n ) ions can be applied as the laser, phosphor and luminescence materials [6][7][8][9][10]. These applications are connected with defects (which can be caused by radiation and doping) in zircon and zircon-type crystals.…”

Investigations of the spin-Hamiltonian parameters and defect structure for the (TiO 4 ) 5− tetrahedral clusters in ZrSiO 4 : Ti 3+ crystal

“…It can be used as the Raman or Infrared spectroscopy-based pressure sensor [2,3] (because its Raman shifts and IR spectra are highly sensitive to the pressure applied) and the matrix material of ceramic pigment [4,5]. Importantly, ZrSiO4 and materials with zircon-type structure doped with transition (d n ) and rare earth (4f n ) ions can be applied as the laser, phosphor and luminescence materials [6][7][8][9][10]. These applications are connected with defects (which can be caused by radiation and doping) in zircon and zircon-type crystals.…”

Effects of Dopant Addition on Lattice and Luminescence Intensity Parameters of Eu(III)-Doped Lanthanum Orthovanadate

“…Vanadate hosts are suitable for classical − and upconversion ,, luminescence systems. Potential applications of rare earth vanadates include lasers, biotechnology and bioimaging, ,, chemical , and near-field sensors, as well as dye-sensitized solar cells. , …”