OSA Superbroadband near-infrared emission and energy
We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr3 )-erbium(Er3 ) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr3 1D2→1G4 and Er3 4I13/2→4I15/2 transitions which lead to emissions located at 1.48 and 1.53 μm respectively.
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Near-infrared quantum cutting in Pr3 -Yb3 Co-doped
Jun 01 2013 · Near-infrared quantum cutting involving Yb3 980 nm and 1 015 nm (2F5/2→2 F 7/2) emission has been achieved upon the excitation of the 3 P 0 energy level of Pr3 at 482 nm. The fluorescence lifetime decreases sharply and quantum efficiency increases with increasing Yb3 concentration and the optimal quantum efficiency reaches 191 .
Get PriceOSA Superbroadband near-infrared emission and energy
We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr3 )-erbium(Er3 ) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr3 1D2→1G4 and Er3 4I13/2→4I15/2 transitions which lead to emissions located at 1.48 and 1.53 μm respectively.
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Visible and Near-Infrared emission properties of Yb3 /Pr3
The intense emission band centered at 620nm are observed with the excitation of 488nm. • the optimal concentration ratio of Yb 3 /Pr 3 is 0.35/0.25 mol in Yb 3 /Pr 3 co-doped SAL glass in this paper. • Yb 3 /Pr 3 co-doped SAL glass. can be used as a potential material for visible laser and near-infrared broadband fiber amplifiers.
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Visible to infrared down conversion in rare-earth doped
Sep 08 2011 · As an example emission from Yb3 ions has been recorded under 440 nm excitation in both KY3F10 Pr3 Yb3 and CaF2 Pr3 Yb3 (Figure 5). The infrared Yb3 emission upon Pr3 excitation is another evidence of the first energy transfer which otherwise has been established with the analysis of the 3P0 decay curves.
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Structural properties Judd–Ofelt calculations and near
The structural and up-conversion properties of BaTiO3 phosphors doped with Er3 /Yb3 have been studied. All phases were synthesized using the sol–gel process and characterized by X-ray powder diffraction (PXRD) Raman spectroscopy optical absorption spectroscopy (Judd–Ofelt theory) and scanning electron microscop RSC Advances Editors #39 collection f Block Chemistry
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Near-infrared quantum cutting in Ho3 Yb3 -codoped BaGdF5
Nov 22 2012 · Infrared quantum cutting involving Yb3 950–1 000 nm (2 F5/2 → 2 F7/2) and Ho3 1 007 nm (5S2 5F4 → 5I6) as well as 1 180 nm (5I6 → 5I8) emissions is achieved in BaGdF5 Ho3 Yb3 nanoparticles which are synthesized by a facile hydrothermal route. The mechanisms through first- and second-order energy transfers were analyzed by the dependence of Yb3 doping concentration on the visible
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Efficient Nd3 sensitized Yb3 emission and infrared-to
Nanocrystalline RE3Ga5O12 (RE = Gd Y and Lu) garnets co-doped with 1 mol of Nd3 and 10 mol of Yb3 ions have been synthesized via a sol–gel method and their structural and luminescence properties studied. Upon laser excitation at 805 nm an intense near-infrared emission from Yb3 ions at 1025 nm is observed w RSC Advances Editors #39 collection f Block Chemistry
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(PDF) Emission analysis of Pr3 Dy3 ions doped Li2O-LiF
These glasses have shown strong absorption bands in visible and near infrared (NIR) regions. Pr3 LBZ glass has exhibited six emission bands in the visible region at 3P0 3H4 (490 nm) 3P1 3H5 (532 nm) 1D2 3H4 (608 nm) 3 P0 3F2 (652 nm) 3P0 3F3 (690 nm) and 3P0 3F4 (723 nm) on exciting at 446 nm (3H4 3P2) and a broad emission band 1D2 1G4 (1
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Near-infrared to visible upconversion in Tm3 and Yb3
Near-infrared to visible upconversion in Tm3 and Yb3 codoped Lu2O3 nanocrystals synthesized by hydrothermal method. Li L Zhang X Wei X Wang G Guo C. Lutetium oxide nanocrystals codoped with Tm3 and Yb3 have been successfully synthesized via adjusting the pH values of the precursor solution in a hydrothermal method followed by a
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Yb3 and Yb3 /Er3 doping for near-infrared emission and
Lead halide perovskite nanocrystals (NCs) exhibit excellent tunable emissions covering the entire visible spectral region but they do not emit near-infrared (NIR) light. We synthesized rare earth element doped CsPbCl3 NCs for NIR emission. The Yb3 doped CsPbCl3 NCs emitted strong 986 nm NIR light the Yb3
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Near-infrared to visible upconversion in Tm3 and Yb3
Near-infrared to visible upconversion in Tm3 and Yb3 codoped Lu2O3 nanocrystals synthesized by hydrothermal method. Li L Zhang X Wei X Wang G Guo C. Lutetium oxide nanocrystals codoped with Tm3 and Yb3 have been successfully synthesized via adjusting the pH values of the precursor solution in a hydrothermal method followed by a
Get PriceNear-infrared to visible upconversion in Tm3 and Yb3
The upconversion emission intensity of Lu2O3 2 Yb3 0.2 Tm3 nanocrystals obtained from the precursor solution with pH = 9 is the strongest. The enhancement of the upconversion luminescence is suggested to be the consequence of reducing the number of OH-
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Infrared-to-visible frequency upconversion in Pr3 /Yb3
Infrared cross relaxation involving Yb3 2F5/2 → 2F7/2 emission was achieved on the excitation of the 1G4 state level of Pr3 . Visible multiphonon-assisted anti-Stokes excitation was obtained
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Near-infrared to visible upconversion in Tm3 and Yb3
Near-infrared to visible upconversion in Tm3 and Yb3 codoped Lu2O3 nanocrystals synthesized by hydrothermal method and upconversion luminescent properties of Lu2O3 2 Yb3 0.2 Tm3 nanocrystals. The upconversion emission intensity of Lu2O3 2 Yb3 0.2 Tm3 nanocrystals obtained from the precursor solution with pH = 9 is the strongest.
Get PriceMagnetic and optical properties of NaGdF Nd3 Yb3 4 Tm
Magnetic and optical properties of NaGdF 4 Nd3 Yb3 luminescence from visible to near-infrared second window (Er 3 Ho3 and Tm ) with the emission at visible region under excitation at 800 nm 35 36 . Therefore the Nd3 sensitized DC/UC dual-mode NCs combining the merits of both above
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Near-IR emission in Pr3 single doped and tunable near-IR
Apr 01 2014 · Abstract A study of the broadband near-infrared emission in Pr 3 single doped and Pr 3 /Yb 3 codoped tellurite–tungstate glasses for optical amplification is presented. In the Pr 3 single doped samples pumped at 474 nm the emission band at 1480 nm presents a FWHM of ∼140 nm.
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Near-Infrared to Visible Upconversion Emission in Er3 and
Oct 11 2018 · Abstract. We report on the upconversion (UC) emission property of Er3 and Yb3 codoped BaHfO3polycrystals. We observed the green ( 540 nm) and the red ( 660 nm) UC emissions in Er3 in the host material BaHfO3 with 980-nm near-infrared excitation. These emissions exhibited strong temperature evolutions.
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Near-infrared to visible upconversion in Tm3 and Yb3
Near-infrared to visible upconversion in Tm3 and Yb3 codoped Lu2O3 nanocrystals synthesized by hydrothermal method and upconversion luminescent properties of Lu2O3 2 Yb3 0.2 Tm3 nanocrystals. The upconversion emission intensity of Lu2O3 2 Yb3 0.2 Tm3 nanocrystals obtained from the precursor solution with pH = 9 is the strongest.
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Magnetic and optical properties of NaGdF Nd3 Yb3 4 Tm
Magnetic and optical properties of NaGdF 4 Nd3 Yb3 luminescence from visible to near-infrared second window (Er 3 Ho3 and Tm ) with the emission at visible region under excitation at 800 nm 35 36 . Therefore the Nd3 sensitized DC/UC dual-mode NCs combining the merits of both above
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Near-infrared quantum cutting in Tb3 Yb3 co-doped
Near-infrared quantum cutting involving the conversion of one visible photon into two near-infrared photons was demonstrated in Ca 0.99− x Yb x WO 4 Tb 0.01 phosphors. From the analysis of the refinement of x-ray diffraction patterns the suitable concentration range of Yb 3 in Ca 0.99 WO 4 0.01Tb 3 was determined to be 0–20 .
Get PriceStructural thermal and broadband NIR emission properties
Nd3 /Pr3 co-doped tellurite glasses containing metallic Ag NPs were synthesized by melt-quenching and heat-treating techniques. The amorphous structural nature fundamental vibrational units and good thermal stability of the prepared tellurite glasses were confirmed by X-ray diffraction (XRD) pattern Raman spectrum and differential scanning calorimeter (DSC) curve respectively.
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Near Infrared and Visible Luminescence from Xerogels
Of importance here is that after excitation with visible light (400–410 nm) the xerogels all show characteristic visible (Sm 3 ) as well as near-infrared (NIR Sm 3 Yb 3 Nd 3 Er 3 Pr 3 Ho 3 ) luminescence of the corresponding Ln 3 ions which is attributed to the energy transfer from the ligands to the Ln 3 ions via an antenna effect.
Get PriceNear-infrared quantum cutting in Pr3 -Yb3 Co-doped
Jun 01 2013 · Near-infrared quantum cutting involving Yb3 980 nm and 1 015 nm (2F5/2→2 F 7/2) emission has been achieved upon the excitation of the 3 P 0 energy level of Pr3 at 482 nm. The fluorescence lifetime decreases sharply and quantum efficiency increases with increasing Yb3 concentration and the optimal quantum efficiency reaches 191 .
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Near-Infrared Quantum Cutting in Pr3 /Yb3 Co-Doped
On excitation of Pr3 ions with a blue visible photon at 449 nm a near infrared emission at 1001 nm were observed in the Pr3 /Yb3 co-doped tellurate glass which is attributed to 2F2/5→2F2
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Emissions of Er3 and Yb3 co-doped SrZrO3 near-infrared
Interestingly under near-infrared (near-IR) excitation we identified sizable visible emissions at 525 547 and 660 nm in our NCs which indicated that the UC process successfully occurred in our NCs. These UC emissions were maximized in the NCs with an Er3 concentration of 0.02 and thermal annealing at 1000 ℃. We found that the intensity
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Near-Infrared to Visible Upconversion Emission in Er3 and
Oct 11 2018 · Abstract. We report on the upconversion (UC) emission property of Er3 and Yb3 codoped BaHfO3polycrystals. We observed the green ( 540 nm) and the red ( 660 nm) UC emissions in Er3 in the host material BaHfO3 with 980-nm near-infrared excitation. These emissions exhibited strong temperature evolutions.
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Intense Single Red Emission Induced by Near‐Infrared
As a new way of producing a single red emission under near‐infrared (NIR) irradiation the possibility of using a narrow bandgap oxide as the host for the sensitizer Yb 3 ion as well as a suitable activator ion such as Ho 3 Er 3 or Tm 3 is considered because the host can absorb the emissions of the activator ion higher in energy than the red emission.
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Concentration-Dependent Near-Infrared Quantum Cutting in
On excitation of Pr3 ions with a blue visible photon at 449 nm a near infrared emission at 1001 nm were observed in the Pr3 /Yb3 co-doped tellurate glass which is attributed to 2F2/5→2F2
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The enhanced and broadband near-infrared emission in Pr 3
Abstract This paper reports an enhanced and broadband near-infrared fluorescence emission in the Pr 3 /Nd 3 co-doped tellurite glass which was prepared using melt-quenching technique. Under the excitation of 488 nm laser diode (LD) three near-infrared emission bands at around 0.9 1.04 and 1.30 μm from 3 P 1 0 → 1 G 4 1 G 4 → 3 H 4 and 1 G 4 → 3 H 5 radiative transitions
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