Laser properties of praseodymium pentaphosphate single crystals

Crystal Growth and Structure of the New Ferrimagnetic Oxyphosphate PbFe3O(PO4)3

“…10 -18 -10 -19 cm 2 ) and high 4f intraconfigurational optical transition oscillator strengths (ca. 10 -5 -10 -6 ) of crystals of Nd-doped YPO 4 have been found to result from covalent interactions between the rare-earth 4f and 5d states and the mainly O 2p state valence band top levels. [1] The intense Eu 3+ 5 D 0 Ǟ 7 F 0 emission in Ca 10-x Eu x (PO 4 ) 6 O 1+x/2 has been interpreted in terms of J-JЈ mixing, which arises from both an unexpectedly high B 0 2 crystal field parameter (ca.…”

“…Laser operation at 637. 4 and 717 nm was demonstrated with PrP 5 O 14 crystals, [3][4][5] at 1051 nm with NdP 5 O 14 crystals [4,6] [a] CNRS, Université and at 1055 nm with K 3 Nd(PO 4 ) 2 crystals. [7] Laser operation around 1048 nm was also established in a series of tetraphosphate LiNd 0.5 RE 0.5 P 4 O 12 (RE = Gd, La) and LiNdP 4 O 12 crystals, which exhibit large σ em τ R ≈ 3.8 ϫ 10 -23 cm 2 s parameters.…”

“…[7] Laser operation around 1048 nm was also established in a series of tetraphosphate LiNd 0.5 RE 0.5 P 4 O 12 (RE = Gd, La) and LiNdP 4 O 12 crystals, which exhibit large σ em τ R ≈ 3.8 ϫ 10 -23 cm 2 s parameters. [8] Efforts have been dedicated to the growth, spectroscopic and optical characterization of pure and RE 3+ -doped (RE = Nd, Er) KTiOPO 4 and RbTiOPO 4 crystals and RbTiOPO 4 crystals that are codoped with Yb 3+ and Nb 5+ ions for second-harmonic generation elements of Nd:YAG, optical parametric oscillator systems and self-frequency doubling generation. [9][10][11] The modification of the 4 F 9/2 spin-orbit multiplet fluorescence of the Dy 3+ cations in DyPO 4 crystals, which behave as 3D Ising antiferromagnets with T N = 3.4 K, was studied as a function of electric-field polarization and magnetic field at low temperature.…”

Luminescence and Lifetimes of Pr3+Excited States in KLa1-xPrx(MoO4)2and KLa1-xPrx(WO4)2Crystals

“…The 3G4-3Η5 transition at about 1.33 μm matches well the transmission window of optical fibres and may be involved in amplifucation of light in telecommunication systems. Other laser channels involving the 3Ρ0-3H4 transition at about 480 nm [1], and the 3Ρ0 -3H6 transition at about 640 nm [2][3][4][5] are particularly important since the emission is in the visible. Major shortcoming of Ρr 3 + lasers is related to the pumping efficiency.…”

Infrared-to-Visible Upconversion in Erbium Pentaphosphate

“…Laser operation in a variety of rare-earth pentaphosphates and also in rare-earth tetraphosphates have been observed by many authors (e.g. [5][6][7][8][9]). We expected that the upconversion process would be strong enough to yield visible fluorescence that could lead to laser emission at sufficiently high pumping power.…”