Holographic testing of fluorescent photosensitive glass–ceramics

Pavel, E.; Mihăilescu, Mona; Nicolae, Vasile B.; Jinga, Sorin‐Ion; Andronescu, Ecaterina; Rotiu, E.; Ionescu, Laura; Mazilu, Claudiu

doi:10.1016/j.optcom.2010.10.023

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…Energy transfer up to 3 nm has been reported [20]. The mean distance between Sm-Sm ions in a fluorescent photosensitive glass ceramics [7] is 1.29 nm. The Hamiltonian of an exciton system in the Heitler-London approximation is of the form…”

mentioning

confidence: 93%

“…Rare earths serve as modifiers because the radii of these ions are too large to enter the network. Mean distances between Ce-Ce ions (6 nm) and Ag-Ag ions (8.75 nm) [7] are much larger than 1 nm resolution of quantum optical lithography, and this fact suggests participation of glass network in the writing process. In the proposed model, the charge-transfer exciton has the electron hole localized on a terminal rare-earth ion (Ce), and the electron belongs to the corresponding network segment.…”

mentioning

confidence: 94%

“…The transfer of energy from a lightharvesting system to a reaction center is a highly efficient process. Coherence could explain this efficiency.The aim of this paper is to propose a coherent exciton mechanism for quantum optical lithography, using our previous experimental studies [1,[7][8][9].A mixed quantum/classical approach for describing the confinement effect is examined. In the approach, only excitons are treated quantum mechanically, whereas an electric field is described in the classical way.…”

mentioning

confidence: 99%

“…The aim of this paper is to propose a coherent exciton mechanism for quantum optical lithography, using our previous experimental studies [1,[7][8][9].…”

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confidence: 99%

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Coherent exciton mechanism of three-dimensional quantum optical lithography

Pavel¹

2015

Appl. Opt.

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Two- and three-dimensional effects observed in quantum optical lithography indicate the existence of a long-distance energy migration, greater than 500 nm, to a reaction center with a diameter smaller than 1 nm. The confinement effect was obtained by energy transfer of coherent Frenkel excitons in an electric field gradient followed by a cooperative process of rare-earth ions in fluorescent photosensitive glass ceramics. A mechanism is proposed and discussed in order to explain the breakthrough of the diffraction limit of light. Fluorescent photosensitive glass ceramics act as a coherent perfect absorber, a time-reversed laser.

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confidence: 93%

mentioning

confidence: 94%

mentioning

confidence: 99%

“…The aim of this paper is to propose a coherent exciton mechanism for quantum optical lithography, using our previous experimental studies [1,[7][8][9].…”

mentioning

confidence: 99%

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Coherent exciton mechanism of three-dimensional quantum optical lithography

Pavel¹

2015

Appl. Opt.

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“…Transparent oxyfluoride glass ceramics have been widely investigated for promising applications in photonics such as in solid state lasers [1], optical thermometry [2,3], X-ray imaging [4,5], non-linear optics [6], holographic recording [7], optical cooling [8] and light conversion devices [9,10]. These composites contain fluoride nanocrystals dispersed in glass matrix and combine the good mechanical and chemical stability of oxides with the excellent optical properties of fluorides [11,12].…”

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confidence: 99%

Cubic and rhombohedral Ba4Lu3F17:Er3+ in transparent glass ceramics: Crystallization and upconversion luminescence

Krieķe

Šarakovskis

Spriņǵis

2018

Journal of Luminescence

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Novel Er3+ doped glass ceramics containing Ba4Lu3F17 nanocrystals were successfully prepared by heat treatment of melt-quenched glasses. Highly efficient upconversion luminescence was detected under nearinfrared excitation and it was at least two orders of magnitude higher than that in the precursor glass. The activator content in the crystalline phase was estimated using polycrystalline Ba4Lu3F17 with different Er3+ content as the reference and it was found to be higher than in similar glass ceramics. The structure and thermal analysis of the glass ceramics revealed the formation of cubic and rhombohedrally distorted cubic modifications of Ba4Lu3F17. Phase transition between the two modifications was studied using site selective spectroscopy of Er3+ as a structural probe. Unusually efficient incorporation of Er3+ ions in the Ba4Lu3F17 nanocrystals combined with the low phonon energy of the fluoride crystals make this material a desirable host for upconversion luminescence.

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