Modification of the spontaneous emission lifetime of Tb3+ in a binary glass

Kumar, G. Manoj; Rao, D. Narayana

doi:10.1016/j.optmat.2008.10.010

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…The radiative decay rate, measured in Eu 3+ [23] and Tb 3+ [67] ions embedded in xPbO + (1 − x)B 2 O 3 binary glass matrix, has also shown agreement with the real-cavity model (see Fig. 5).…”

Section: Experimental Studiessupporting

confidence: 67%

“…In [62], Kuznetsov et al applied their microscopic model, given by Eq. (37), to fit the experimentally measured radiative lifetime of Eu 3+ [23] and Tb 3+ [67] ions in a binary glass matrix xPbO-(1 − x)B 2 O 3 and liquid suspensions of quantum dots [28]. Their theory provides an excellent description for both kinds of systems, while the real-cavity model originally applied to describe the data [23,28,67] works better for the ions in a binary glass matrix [23,67].…”

Section: Experimental Studiesmentioning

confidence: 99%

“…(37), to fit the experimentally measured radiative lifetime of Eu 3+ [23] and Tb 3+ [67] ions in a binary glass matrix xPbO-(1 − x)B 2 O 3 and liquid suspensions of quantum dots [28]. Their theory provides an excellent description for both kinds of systems, while the real-cavity model originally applied to describe the data [23,28,67] works better for the ions in a binary glass matrix [23,67]. The excellent agreement of the microscopic theory proposed in [62] with the experimental data obtained in the liquid suspensions of quantum dots can be attributed to the fact that Kuznetsov et al account for the self-action of the emitter through the change of its local environment.…”

Section: Experimental Studiesmentioning

confidence: 99%

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Local-field effects in nanostructured photonic materials

Dolgaleva

Boyd

2012

Adv. Opt. Photon.

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It is well known that the optical response of a medium depends on the local field acting on an individual emitter rather than on the macroscopic average field in the medium. The local field depends very sensitively on the microcopic environment in an optical medium. It is thus possible to achieve a significant control over the local field by intermixing homogeneous materials on a nanoscale to produce composite optical materials. A combination of local-field effects and nanostructuring provides new degrees of freedom for manipulating the optical properties of photonic materials. Especially interesting opportunities open up in the nonlinear optical regime where the material response depends on the local-field correction as a power law. The goal of this review is to present a conceptual overview of the influence of local-field effects on the optical properties of photonic materials, both homogeneous and composite. We also give a summary of recent achievements in controlling the optical properties by local-field effects and nanostructuring.

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Section: Experimental Studiessupporting

confidence: 67%

Section: Experimental Studiesmentioning

confidence: 99%

Section: Experimental Studiesmentioning

confidence: 99%

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Local-field effects in nanostructured photonic materials

Dolgaleva

Boyd

2012

Adv. Opt. Photon.

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“…Depending on the properties of the environment, mac roscopic and microscopic approaches are used to describe the interactioninduced change of the decay in a medium [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Macroscopic methods prove the efficiency for a description of such experiments where host atoms of a medium are non resonant to the radiation emitted by an initially excited impu rity atom, and the characteristic distances between host atoms are much smaller then the transition wavelength of the impu rity [19][20][21][22][23][24][25][26]. In the opposite case, the discrete structure of the atomic environment and associated interatomic correlations play a key role, and one has to use a microscopic description [15][16][17][18][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of the interaction-induced modifications of the decay of different Zeeman sublevels of an atom excited in isotropic environment

Попов¹,

Kuraptsev²,

Sokolov³

2019

Laser Phys. Lett.

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On the basis of a consistent quantum microscopic approach, we consider the decay of a multilevel atom excited in an ensemble of resonant twolevel atoms. We show that the decay rate of different Zeeman sublevels of the excited state can be different, unlike in the case of a free atom. This effect is observed even when the environment is isotropic. Furthermore, we find that different irreducible components of the density matrix of initially excited multilevel atoms also differ in terms of decay rate.

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Modification of the Near‐Infrared Spontaneous Emission in Er³⁺‐Activated Inverse Silica Opals

Chiappini

Armellini

Bazzanella

et al. 2019

Physica Status Solidi (b)

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Ordered SiO2:Er3+ inverse opal films are fabricated by sol–gel technique in combination with a self‐assembly method to examine their potential as a suitable platform to tailor the spontaneous emission lifetime of Er3+ ions and its concentration quenching (CQ). Good ordering on long‐range scale is evidenced by means of scanning electron microscopy, whereas reflectance measurements display a green bright color, as it results from optical Bragg diffraction from the (111) crystal planes. Moreover, it is observed that the spontaneous decay rates (SDRs) of the inverse opals are suppressed, in contrast to the corresponding reference samples, due to the modulation of the effective refractive index (neff), in agreement with the virtual cavity model. At the same time, the reduced CQ of Er3+ is attributed to the periodic empty cavity of the inverse opals. These results demonstrate that inverse opals can provide a tool for the enhancement of near‐infrared (NIR) luminescence.

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Modification of the spontaneous emission lifetime of Tb3+ in a binary glass

Cited by 8 publications

References 12 publications

Local-field effects in nanostructured photonic materials

Local-field effects in nanostructured photonic materials

Peculiarities of the interaction-induced modifications of the decay of different Zeeman sublevels of an atom excited in isotropic environment

Modification of the Near‐Infrared Spontaneous Emission in Er³⁺‐Activated Inverse Silica Opals

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Modification of the spontaneous emission lifetime of Tb3+ in a binary glass

Cited by 8 publications

References 12 publications

Local-field effects in nanostructured photonic materials

Local-field effects in nanostructured photonic materials

Peculiarities of the interaction-induced modifications of the decay of different Zeeman sublevels of an atom excited in isotropic environment

Modification of the Near‐Infrared Spontaneous Emission in Er3+‐Activated Inverse Silica Opals

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Product

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Modification of the Near‐Infrared Spontaneous Emission in Er³⁺‐Activated Inverse Silica Opals