Luminescence properties of Y2O3 single crystals doped with Pr3+ or Tm3+ and codoped with Yb3+, Tb3+ or Ho3+ ions

Guyot, Y.; Moncorgé, R.; Merkle, Larry D.; Pinto, Afonso Silva; McIntosh, Bruce; Verdún, Horacio R.

doi:10.1016/0925-3467(95)00045-3

Cited by 125 publications

(61 citation statements)

References 20 publications

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“…This is in good agreement with values reported for bulk Tm 3+ :Y 2 O 3 with lifetimes of 4.15 ms (1 at.% Tm 3+ [2]) and 3.2 ms (2 at.% Tm 3+ [20]). Figure 4 shows the emission spectrum measured with an ANDO AQ6375 optical spectrum analyser using a spectral bandwidth of 2 nm, along with data observed for bulk crystal [20] for comparison. The spectral profiles of waveguide and bulk are almost identical.…”

Section: Spectroscopic Characterizationsupporting

confidence: 81%

Laser operation of a Tm:Y_2O_3 planar waveguide

Szela¹,

Sloyan²,

Parsonage³

et al. 2013

Opt. Express

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Section: Spectroscopic Characterizationsupporting

confidence: 81%

Laser operation of a Tm:Y_2O_3 planar waveguide

Szela¹,

Sloyan²,

Parsonage³

et al. 2013

Opt. Express

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“…4). The PL spectra of Tm 3+ ions in Y 2 O 3 ceramic observed in visible and near-infrared region are quite similar to the spectra of Tm 3+ ions in Y 2 O 3 single crystals [9] . This similarity indicates that Tm 3+ ions locate at Y 3+ sites in the Y 2 O 3 lattice in the ceramic state, as in the case of single crystal.…”

Section: -3supporting

confidence: 58%

“…Their spectrum is quite similar to that in Fig. 3, indicating that the Tm 3+ ions in the Y 3+ site with C2 symmetry in the single crystal [9] are also present in our ceramic. The energy level diagram of Tm 3+ ion in the Y 2 O 3 ceramic shown in Fig.…”

supporting

confidence: 61%

Investigation of emission properties of Tm3+:Y2O3 transparent ceramic

Yi¹,

Tsuboi²,

Zhou³

et al. 2012

中国光学快报

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A transparent and emitting ceramic of Y2O3 doped with 6% Tm 3+ ions is fabricated by vacuum sintering with ZrO2. Absorption, photoluminescence (PL), and PL excitation (PLE) spectra are investigated in a spectral range of 200 to 2 100 nm at various temperatures between 296 and 12 K. Intense emission band appears at 450 to 465 nm in the visible range. Near-infrared emission bands are observed at 1 200 to 1 300 nm and 1 400 to 1 550 nm, with intense peaks at 1 270, 1 450, and 1 523 nm. The luminescence mechanisms and potential applications of the emissions are discussed with the help of Judd-Ofelt theory and PLE spectra.OCIS 12 . However, the high melting point of 2 430• C and phase transformation at approximately 2 280• C of Y 2 O 3 make it considerably difficult to grow single Y 2 O 3 crystals by conventional methods. On the contrary, transparent ceramics are much easier to produce than single crystals because of much lower processing temperatures.Since the first demonstration of Nd:YAG ceramic laser in 1995 by Ikesue [3] , transparent ceramic materials have received a wide attention [4−7] . Transparent ceramics have optical properties comparable to single crystal, but with better mechanical properties. Additionally, fabrication of materials with big size is much easier for ceramics than for single crystals. These advantages make transparent ceramics attractive for laser media, fluorescent materials, and window materials.In [8−10] , the measurements were made at room temperature, not at low temperatures. We report the photoluminescence (PL) and PL excitation (PLE) spectra of Tm 3+ -doped Y 2 O 3 ceramic at temperatures from 12 to 295 K. The luminescence mechanisms and the potential of the laser application are also discussed.High-purity commercial powders of Y 2 O 3 (99.99%), Tm 2 O 3 (99.99%), and ZrO 2 (99.99%) were used as starting materials. The powders were weighed according to the stoichiometry of (Zr 0.03 Tm 0.06 Y 0.91 ) 2 O 3 , then ballmilled in alcohol for 20 h. The obtained slurries were dried and then ground with a pestle. The mixed powders were sieved through a 200 mesh screen. Next, the powders were dry-pressed in a stainless steel mold into discs 15 mm in diameter and 3 mm in height under low pressure. The discs were cold-isostatic-pressed under 250 MPa. The pressed discs were calcined at 600 to 1 000 • C for 2 h. Eventually, transparent ceramics were obtained after vacuum sintering at 1 800• C for 20 h with a vacuum degree of 1×10 −3 Pa. The polished discs were etched in H 3 PO 4 at 80• C for 3 min for the observation of the microstructures. The synthesized ceramics were polished for optical measurements.The optical transmittances were obtained by a UV/VIS/NIR spectrophotometer (V-900, JASCO, Japan). The PL spectra in the temperature range of 12 to 295 K and PLE spectra at 12 and 295 K were measured with a spectrophotometer (Fluorolog-3, Spex, USA). Infrared PL spectra were measured in a spectral range of 800 to 1 600 nm using a liquid-nitrogen-cooled InGaAs photodiode (DSSX-IGA010I, Jobin-Yvo...

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“…Significant research in the growth and characterization of both Gd 2 O 3 and Y 2 O 3 has been undertaken over the past few years because of their several relevant physical properties and technical applications such as: high melting point [1]; high mechanical strength [2]; high dielectric constant (in the range [14][15][16][17][18] [3]; a rather high refractive index n ≅ 2 [4]; and a very good protective behavior as a coating in reactive severe environment [5]. Both are promising materials for electronic applications to replace SiO 2 in metal-oxide-semiconductor (MOS) heterostructures used in the MOS transistor [6].…”

Section: Introductionmentioning

confidence: 99%

X‐ray diffraction analysis of powder and thin film of (Gd_1‐xY_x)₂O₃ prepared by sol‐gel process

Arda

2008

Cryst. Res. Technol.

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The mixed oxide (Gd 1-x Y x ) 2 O 3 (0.0 ≤ x ≤ 1.0) were synthesized, as powder and thin film, by a sol-gel process. X-ray diffraction data were collected and crystal structure and microstructure analysis were performed using Rietveld refinement method. All samples were found to have the same crystal system and formed solid solutions over the whole range of x. The cationic distribution, Gd 3+ and Y 3+, over the two non-equivalent sites 8b and 24d of the space group Ia3 is found to be random for all values of (x). The lattice parameter is found to vary linearly with the composition (x). Replacing Gd 3+ and Y 3+ by each other introduces a systemic decrease in the x-coordinate of cation position (24d) and slight changes in the oxygen coordinates. Crystallite size and microstrain analysis is performed along different crystallographic directions and anisotropic changes are found with the composition parameter (x). The average crystallite size ranges from 75 to 149 nm and the r.m.s strain from 0.027 to 0.068 x10 . Textured Gd 1.841 Y 0.159 O 3 (400) buffer layers, with a high degree of alignment in both out-plane and in-plan, are successfully grown on cube textured Ni (001) tape substrates by sol-gel dip coating process. The resulting buffer layers are crack-free, pinhole-free, dense and smooth. YbBa 2 Cu 3 O 7-x (YbBCO) thin film could be (00l) epitaxially grown on the obtained buffer layer using sol-gel dipping technique.

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Luminescence properties of Y2O3 single crystals doped with Pr3+ or Tm3+ and codoped with Yb3+, Tb3+ or Ho3+ ions

Cited by 125 publications

References 20 publications

Laser operation of a Tm:Y_2O_3 planar waveguide

Laser operation of a Tm:Y_2O_3 planar waveguide

Investigation of emission properties of Tm3+:Y2O3 transparent ceramic

X‐ray diffraction analysis of powder and thin film of (Gd_1‐xY_x)₂O₃ prepared by sol‐gel process

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Luminescence properties of Y2O3 single crystals doped with Pr3+ or Tm3+ and codoped with Yb3+, Tb3+ or Ho3+ ions

Cited by 125 publications

References 20 publications

Laser operation of a Tm:Y_2O_3 planar waveguide

Laser operation of a Tm:Y_2O_3 planar waveguide

Investigation of emission properties of Tm3+:Y2O3 transparent ceramic

X‐ray diffraction analysis of powder and thin film of (Gd1‐xYx)2O3 prepared by sol‐gel process

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X‐ray diffraction analysis of powder and thin film of (Gd_1‐xY_x)₂O₃ prepared by sol‐gel process