Optically active Er3+–Yb3+ codoped Y2O3 films produced by pulsed laser deposition

Dikovska, A.; Atanasov, P.A.; Castro, Miguel Delibes de; Perea, Alicia; Gonzalo, J.; Afonso, Carmen N.; López, J. Garcı́a

doi:10.1016/j.tsf.2005.11.022

Cited by 42 publications

(22 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, thin film growth methods typically involve deposition on oxidized silicon wafers (the oxide layer on the silicon providing the lower cladding layer) or other substrates, thus potentially allowing for integration with other devices on the same substrate and fabrication of devices over a large area. Methods which have been utilized for depositing Er-doped waveguiding films include atomic layer deposition [129,151], dip-coating [152], flame hydrolysis [32,153], high vacuum chemical vapour deposition (HV-CVD) [154], plasma-enhanced chemical vapour deposition (PECVD) [83,127,138,[155][156][157], pulsed laser deposition (PLD) [59,126,145,[158][159][160][161][162][163], reactive cosputtering [68,84,87,128,[164][165][166], RF-sputtering [40,98,131,133,137,[167][168][169][170], the sol-gel method [134,[171][172][173][174][175]…”

Section: Waveguide Fabrication Methodsmentioning

confidence: 99%

Erbium‐doped integrated waveguide amplifiers and lasers

Bradley

Pollnau

2010

Laser & Photonics Reviews

310

161

View full text Add to dashboard Cite

Erbium-doped fiber devices have been extraordinarily successful due to their broad optical gain around 1.5-1.6 μm. Er-doped fiber amplifiers enable efficient, stable amplification of high-speed, wavelength-division-multiplexed signals, thus continue to dominate as part of the backbone of longhaul telecommunications networks. At the same time, Er-doped fiber lasers see many applications in telecommunications as well as in biomedical and sensing environments. Over the last 20 years significant efforts have been made to bring these advantages to the chip level. Device integration decreases the overall size and cost and potentially allows for the combination of many functions on a single tiny chip. Besides technological issues connected to the shorter device lengths and correspondingly higher Er concentrations required for high gain, the choice of appropriate host material as well as many design issues come into play in such devices. In this contribution the important developments in the field of Er-doped integrated waveguide amplifiers and lasers are reviewed and current and future potential applications are explored. The vision of integrating such Er-doped gain devices with other, passive materials platforms, such as silicon photonics, is discussed.

show abstract

Section: Waveguide Fabrication Methodsmentioning

confidence: 99%

Erbium‐doped integrated waveguide amplifiers and lasers

Bradley

Pollnau

2010

Laser & Photonics Reviews

310

161

View full text Add to dashboard Cite

show abstract

“…The conditions for particle generation in a dispersed system Carrier Gas (air) flow rate, F a Â 10 5 (m 3 However, for the conditions in this experimental work, the percolation criterion, u is less than the critical volume fraction u Ã = 0.16 [20], implying the possibility for excessive porosity formation. FE-SEM micrographs are presented at Fig.…”

Section: Tablementioning

confidence: 77%

“…[1][2][3][4][5]. They exhibit the unique property of emitting visible light following photoexcitation in near infrared region.…”

Section: Introductionmentioning

confidence: 99%

Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing

Dugandžić

Lojpur

Mančić

et al. 2013

Advanced Powder Technology

View full text Add to dashboard Cite

Abstract:The opportunities of the hot wall aerosol synthesis, i.e. conventional spray pyrolysis (CSP) method are demonstrated for the generation of highly spherical threedimensional (3D) nanostructured phosphor particles with uniformly distributed components, phases and nano-clustered inner structure. With the presumption that certain particle morphology is formed during the evaporation/drying stage, the aerosol transport properties and powder generation are correlated with the particles structural and morpholog-ical features. With the help of various analyzing techniques like Field Emission Scanning Electron Micros-copy (FE-SEM), Transmission Electron Microscopy (TEM) coupled with energy dispersive X-ray Analysis and STEM mode (TEM/EDS), X-ray Powder Diffraction (XRPD) and fluorescence measurements the feasi-ble processing of up-conversion rare-earth Y 2 O 3 :Er, Yb phosphors powders are discussed.

show abstract

“…Upconversion luminescence from Er 3? contaminants cannot be ruled out as it also produces emission bands around 550 and 660 nm (but not around 760 nm) [35,36], but it is expected to be weaker owing to its lower concentration in the starting material.…”

Section: Resultsmentioning

confidence: 99%

Nanostructure and luminescence properties of amorphous and crystalline ytterbium–yttrium oxide thin films obtained with pulsed reactive crossed-beam deposition

Bisson

Patriarche²,

Marest

et al. 2014

J Mater Sci

View full text Add to dashboard Cite

The nanostructure of ytterbium-doped yttrium oxide thin films, produced using pulsed laser ablation of a Yb-Y alloy target together with a pulsed flow of oxygen, is examined using X-ray and electron diffraction as well as Scanning Transmission Electron Microscopy (STEM). As-produced coatings are amorphous and become nanocrystalline cubic yttria after annealing. STEM images taken in the Bright-Field (BF) and in the High-Angle Annular Dark-Field (HAADF) modes reveal different aspects of the nanostructure of yttria. Simulations of the bixbyite structure of yttria indicate that dark spots arranged in a honeycomb structure seen in the STEM-BF mode arise from the absence of oxygen ions at regular crystallographic locations, while those seen on the HAADF images arise from cationic distortions. These results spectacularly exemplify the complementarity of the BF and HAADF imaging modes. Luminescence properties of amorphous and crystalline samples are also studied. Excitation of Yb 3? ions with an infrared (IR) laser diode produce both IR luminescence from excited Yb 3? and visible luminescence from holmium impurities present in the starting materials. Yb 3? emission bands become increasingly narrower as crystallization takes place, testifying for the transition from inhomogeneous to homogeneous crystal field. Increased lifetime and more intense luminescence observed after annealing imply reduced nonradiative relaxation and higher quantum efficiency.

show abstract

Optically active Er3+–Yb3+ codoped Y2O3 films produced by pulsed laser deposition

Cited by 42 publications

References 15 publications

Erbium‐doped integrated waveguide amplifiers and lasers

Erbium‐doped integrated waveguide amplifiers and lasers

Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing

Nanostructure and luminescence properties of amorphous and crystalline ytterbium–yttrium oxide thin films obtained with pulsed reactive crossed-beam deposition

Contact Info

Product

Resources

About