Energy Level Structure of LiYF&lt;SUB&gt;4&lt;/SUB&gt;:Dy&lt;SUP&gt;3+&lt;/SUP&gt;: Crystal Field Analysis

Brik, M.G.; Ishii, Toshinorí; Ткачук, А. М.; Tanaka, Isao

doi:10.2320/matertrans.45.2026

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…Therefore, in Table 1 we only present the estimated number of lines for the 4 I 13/2 -4 M 19/2 , 6 P 7/2 -2 F 7/2 , and 4 F 5/2 -4 F 3/2 terms. The relative positions of the multiplets detected in the present paper are in good agreement with those predicted for free Dy 3+ ions [28,37], and those determined for Dy 3+ ions in solutions [38,39].…”

Section: Luminescencesupporting

confidence: 89%

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

et al. 2021

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The energy levels of Dy3+ ions have been determined in lithium yttrium borate (Li6Y(BO3)3) single crystals in a wide spectral range between 3000 and 40,000 cm−1 using optical absorption and luminescence spectroscopy, which also allow for an analysis of the ground state. The crystal field splittings of the 6H15/2 ground state and all excited states up to the 4F7/2 manifold were obtained at a low temperature, based on luminescence (T = 4.2–78 K) and absorption (T = 8–100 K) measurements, respectively. The numbers of experimentally observed Stark sublevels are in agreement with those expected theoretically for Dy3+ ions occupying a single low symmetry (C1) site.

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Section: Luminescencesupporting

confidence: 89%

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

et al. 2021

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“…[1] The trivalent Er 3þ , Tm 3þ , Nd 3þ , and Yb 3þ rare-earth ion-doped silicate glass active zones in the fiber laser sources operate at predetermined wavelengths that correspond to their respective 4f-4f transitions. [2][3][4][5][6][7][8][9][10][11][12] Their definite output wavelengths limit the use of fiber lasers in a wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Amplified Spontaneous Emission from Optical Fibers Containing Anisotropic Morphology CdSe/CdS Quantum Dots Under Continuous Wave Excitation

Das,

Dhiman,

Umapathy

et al. 2023

Advanced Photonics Research

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Fiber laser field is typically dominated by rare earth ions as gain material in the core of a silica optical waveguide. Due to their specific emission wavelengths, rare‐earth‐doped fiber lasers are available only at few predefined wavelengths. However, quantum dots (QDs) are materials which show tunable emission with change in size and composition. Due to such tunability, QDs seem to be promising candidates for obtaining fiber lasers at a spectrum of wavelengths which is not possible using rare earth ions. To replace rare earth ions with QDs, it is of paramount importance that QDs show signatures of optical gain. Herein, the synthesis of asymmetric pod‐shaped CdSe/CdS QDs is reported, which demonstrate efficient gain on pumping. The intrinsic gain properties of the QDs are evaluated through transient absorption (TA) spectroscopy. Later, the exquisite QDs are used to fabricate specialty fibers from which amplified spontaneous emission (ASE) is obtained using continuous wave laser pump at room temperature. Finally, emission signal stability is checked by studying photobleaching and controlling the concentration of the QDs.

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“…Figure shows an approximate Dy 3+ energy level diagram with the primary transitions shown and labeled with their wavelengths. Note that the energies/wavelengths shown are approximate as the precise location of the energy levels depends on the host material. ,− …”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Signatures of Sub-Second Laser-Calcined Dy³⁺-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors

2017

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We measure the phase-dependent spectroscopic signaturesphotoluminescence (PL) emission spectrum, PL excitation spectrum, and PL lifetimeof three different heat treated Dy3+-doped oxide precursors (TiO2, Y2O3, and ZrO2), which are calcined at temperatures ranging from 440 to 1256 K for 100 ms. On the basis of these spectroscopic measurements we compute temperature calibration curves, which correlate a given spectroscopic signature to a specific calcination temperature. We find that the emission/excitation spectra-based calibration curves for a given material, in general, have the same transition temperature within uncertainty, but the lifetime-based calibration curve is found to transition at a lower temperature. This difference is due to the emission/excitation-based curves depending on crystallization of the oxide hosts, while the lifetime changes due to the decomposition of the precursor compound, which eliminates some PL quenchers, including high energy O–H, C–O, and C–O2 vibrations. The observation of two different kinetic phenomenon in a single oxide host has promising applications in ex situ thermal impulse sensors, which have uses in explosive fireballs, combustion science, and arson investigations.

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Energy Level Structure of LiYF<SUB>4</SUB>:Dy<SUP>3+</SUP>: Crystal Field Analysis

Cited by 9 publications

References 21 publications

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

Amplified Spontaneous Emission from Optical Fibers Containing Anisotropic Morphology CdSe/CdS Quantum Dots Under Continuous Wave Excitation

Spectroscopic Signatures of Sub-Second Laser-Calcined Dy³⁺-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors

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Energy Level Structure of LiYF<SUB>4</SUB>:Dy<SUP>3+</SUP>: Crystal Field Analysis

Cited by 9 publications

References 21 publications

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

Amplified Spontaneous Emission from Optical Fibers Containing Anisotropic Morphology CdSe/CdS Quantum Dots Under Continuous Wave Excitation

Spectroscopic Signatures of Sub-Second Laser-Calcined Dy3+-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors

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Product

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Spectroscopic Signatures of Sub-Second Laser-Calcined Dy³⁺-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors