Characterization of erbium doped lithium niobate crystals and waveguides

Mattarelli, Maurizio; Sebastiani, S.; Špirková, Jarmila; Berneschi, S.; Brenci, M.; Calzolai, R.; Chiasera, Alessandro; Ferrari, Maurizio; Montagna, M.; Conti, G. Nunzi; Pelli, S.; Righini, Giancarlo C.

doi:10.1016/j.optmat.2006.01.030

Cited by 11 publications

(5 citation statements)

References 18 publications

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“…. In Ge–Ga–S glass this band is rather smooth similarly to other disordered materials, and in contrast to crystalline materials where more pronounced sub‐peaks are typical . The addition of CsBr also influences the shape of the broad‐band luminescence of the host glass.…”

Section: Discussionmentioning

confidence: 90%

Photoluminescence properties of Er‐doped Ge–In(Ga)–S glasses modified by caesium halides

Ivanova

Zavadil

Костка

et al. 2017

Physica Status Solidi (b)

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Chalcohalide Ge–In–S and Ge–Ga–S glasses modified by CsX (X = Cl, Br, and I), and doped with Er in the range from 0.1 to 0.5 at.%, have been prepared and investigated. The influence of CsX addition on their optical properties has been studied by transmission and photoluminescence spectroscopy. Nominal compositions of [Ge25In(Ga)10S65]90(CsX)10 have been selected as host materials. The shift of the absorption edge as a function of caesium halides is observed in GeInS (CsX) system with maximum band gap observed for CsI. The low‐temperature photoluminescence reveals the broad band luminescence of the host glass centered at around the half of the band gap energy with superimposed 4f–4f radiative transitions of Er3+ ions. The position of the broad luminescence band is considerably shifted to higher energy in the case of CsI as compared to CsCl and CsBr. In the case of Er‐doped chalcohalide (Ge25Ga10S65)90(CsBr)10 system, a considerable narrowing of 4I13/2 → 4I15/2 radiative transitions of Er3+ ions accompanied by the pronounced splitting of the emission sub‐bands clearly documents the increasing ceramics‐like nature in the host material due to the admixture of CsBr. The influence of CsBr concentration on the shape of the broad‐band luminescence of Ge–Ga–S–CsBr host is also reported.

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Section: Discussionmentioning

confidence: 90%

Photoluminescence properties of Er‐doped Ge–In(Ga)–S glasses modified by caesium halides

Ivanova

Zavadil

Костка

et al. 2017

Physica Status Solidi (b)

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“…One possibility to realize the required dissipative waveguide is by intentionally doping with an absorbing ion for the desired wavelength range. In the case of the Er 3+ that was already illustrated above, doped waveguides can be realized for instance in LiNbO 3 [30,31], glasses [32,33] or polymers [34,35]. In all these cases achievable doping levels lead to absorption constants in the order of few cm −1 so that the required device length will be of the order of the centimeter.…”

Section: Discussionmentioning

confidence: 97%

Ultrabroadband beam splitting in a dissipative system of three waveguides

Alrifai,

Coda,

Peltier

et al. 2020

Preprint

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We show that a system of three parallel waveguides, among which the central one is dissipative, leads to an ultra-broadband power splitting associated to an overall 50% power loss. The present approach is reminiscent of non-hermitian systems in quantum mechanics and does not require a perfect effective index matching between the external and the central waveguides. The present concept does not need any slow adiabatic evolution of the waveguide parameters and may therefore be realized over very short device lengths, specially in the case where the central waveguide is of the plasmonic type.

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“…Perovskite materials have attracted vast attention due to their excellent optical, electrical, chemical properties and capability of hosting functional ions of various sizes [14][15][16]. In particular, oxides such as YAlO 3 , BaTiO 3 , LiNbO 3 , and fluorides such as KMgF 3 and NaYF 4 have found important applications in visible-emitting phosphors when hosting Er and Yb ions [11,[17][18][19][20]. Oxides are quite resistant to corrosive environments and have good optical properties.…”

Section: Introductionmentioning

confidence: 99%

BaZrO<sub>3</sub>:YB NANOPHOSPHOR FOR EFFICIENT UP-CONVERSION LIGHT EMISSION

Dı́az-Torres¹,

De-la-Rosa²,

Oliva³

et al. 2009

PIER Letters

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Abstract-Strong visible green upconversion emission in nanocrystalline BaZrO 3 :Yb 3+ powder, obtained by a hydrothermal process at 100 • C, is reported. The unconverted emission has a quadratic dependence on the pump intensity with a lifetime around half that of the NIR lifetime. Results suggest cooperative upconversion as the mechanism responsible for the green fluorescence. This efficient Yb 3+ -based cooperative up-conversion process allows the development of novel emitting materials in the ultraviolet to visible (UV-VIS) range.

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Characterization of erbium doped lithium niobate crystals and waveguides

Cited by 11 publications

References 18 publications

Photoluminescence properties of Er‐doped Ge–In(Ga)–S glasses modified by caesium halides

Photoluminescence properties of Er‐doped Ge–In(Ga)–S glasses modified by caesium halides

Ultrabroadband beam splitting in a dissipative system of three waveguides

BaZrO<sub>3</sub>:YB NANOPHOSPHOR FOR EFFICIENT UP-CONVERSION LIGHT EMISSION

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