Wide transparency range and high refractive index lead–niobium-germanate glass thin films

Sanz, Olga; Gonzalo, J.; Perea, Á.; Fernández-Navarro, J.M.; Afonso, Carmen N.; López, J. Garcı́a

doi:10.1007/s00339-004-2868-7

Cited by 13 publications

(5 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is replaced by a dielectric layered structure of alternating refractive indices. High refractive index layers − could be made of, for example, lithium niobate (LiNbO 3 ) with a refractive index of 2.3 at the optical wavelength used here, or composites of polymeric materials and metal sulfides or heavy-metal oxides (refractive indices for poly(ethylene oxide)/FeS 2 are 2.5−2.8).…”

Section: Simulation Of Fluorescence In Fabry−perot Structures With Pu...mentioning

confidence: 99%

Surface Plasmon-Coupled Emission and Fabry−Perot Resonance in the Sample Layer: A Theoretical Approach

Calander

2005

J. Phys. Chem. B

View full text Add to dashboard Cite

A theoretical approach is used to investigate the coupling of surface plasmon-coupled emission to Fabry-Perot resonance in the sample layer. Quantities investigated are emission angles, polarization, power levels, and fluorescence lifetimes. The results are compared to experimental findings. For comparison a layered structure without surface plasmons, possessing only dielectric Fabry-Perot resonances, is explored. This structure seems to be amenable to s-polarization only but is in principle loss-less and has more degrees of freedom for design and optimization.

show abstract

Section: Simulation Of Fluorescence In Fabry−perot Structures With Pu...mentioning

confidence: 99%

Surface Plasmon-Coupled Emission and Fabry−Perot Resonance in the Sample Layer: A Theoretical Approach

Calander

2005

J. Phys. Chem. B

View full text Add to dashboard Cite

show abstract

“…Nuclear reaction analysis (NRA) was used to determine the oxygen content of the films through the nuclear reaction 16 O(d, p) 17 O at 0.853 MeV. The absolute oxygen content was determined within 4% using a Ta 2 O 5 /Ta reference [13].…”

Section: Methodsmentioning

confidence: 99%

“…Chemical methods such as chemical vapor deposition or sol-gel allow producing homogenous doped materials, but without any control on the spatial distribution of Er 3+ ions. Instead, alternate pulsed laser deposition (a-PLD) solves this drawback as it allows not only the synthesis of complex oxide films with good optical quality [12,13]; but also nanostructuring the in-depth dopant profile of the deposited material by alternating different targets during the deposition process. This approach has been shown to improve the photoluminescence (PL) response when the separation between Er-doped layers is optimized in Er doped Al 2 O 3 films [14].…”

Section: Introductionmentioning

confidence: 99%

Nanostructuring the Er3+ distribution in PbO–Nb2O5–GeO2 thin film glasses

et al. 2015

Self Cite

View full text Add to dashboard Cite

a b s t r a c tNanostructured thin film glasses with a controlled concentration and in-depth distribution of Er 3+ have been produced by alternate pulsed laser deposition (PLD) from host (PbO-Nb 2 O 5 -GeO 2 ) and dopant (Er) targets (in-situ doping). Their photoluminescence (PL) response is compared to that of doped films grown by standard PLD using Er 3+ -doped glass targets (ex-situ doping), by studying the characteristic Er 3+ emission at 1.53 lm. PL intensity of in-situ doped films is maximized for in-depth separation between Erdoped layers P5 nm, whereas their lifetime is always longer in the case of nanostructured films having a separation between Er 3+ ions similar to that of ex-situ doped films. These results stem from the different distribution of Er 3+ ions in the host glass: isotropic 3D for ex-situ doped films or planar 2D for nanostructured films. Thus, the number of neighbor Er 3+ ions is larger in the first case, which favors the increase of nonradiative deexcitation due to concentration quenching.

show abstract

“…Figure 1a shows the evolution of the relative oxygen to cation content ratio (N O /N CAT ) in PNG films produced by PLD from a 25 PbO-15 Nb 2 O 5 -60 GeO 2 (mol %) at increasing O 2 background pressures. 22 Films grown at pressures lower than 1 Pa are clearly oxygen deficient, whereas the oxygen content in the films increases for O 2 pressures above 1 Pa to become close to that of the target for gas pressures higher than 5 Pa. Oxygen deficiency affects the glass structure and it may even prevent the formation of film glasses.…”

Section: Structure and Optical Properties Of Pulsed Laser Deposited Tmentioning

confidence: 99%

Pulsed laser deposition of rare-earth-doped glasses: a step toward lightwave circuits

et al. 2016

Self Cite

View full text Add to dashboard Cite

Pulsed Laser Deposition (PLD) is used to produce Er-doped lead-niobium germanate (PbO-Nb 2 O 5 -GeO 2 ) and fluorotellurite (TeO 2 -ZnO-ZnF 2 ) thin film glasses. Films having high refractive index, low absorption and large transmission are obtained in a narrow processing window that depends on the actual PLD configuration (O 2 pressure ∼a few Pa, Laser energy density ∼2-3 J cm -2 for the results presented in this work). However, Er-doped thin film glasses synthetized at room temperature using these experimental parameters show poor photoluminescence (PL) performance due to non-radiative decay channels, such as a large OHconcentration. Thermal annealing allows improving PL intensity and lifetime (τ PL ), the latter becoming close to that of the parent Er-doped bulk glass. In addition, the use of alternate PLD from host glass and rare-earth targets allows the synthesis of nanostructured thin film glasses with a controlled rare-earth concentration and in-depth distribution, as it is illustrated for Er-doped PbO-Nb 2 O 5 -GeO 2 film glasses. In this case, PL intensity at 1.53 μm increases with the spacing between Er-doped layers to reach a maximum for a separation between Er-doped layers ≥ 5 nm, while τ PL is close to the bulk value independently of the spacing. Finally, the comparison of these results with those obtained for films grown by standard PLD from Er-doped glass targets suggests that nanostructuration allows reducing rare-earth clustering and concentration quenching effects. Downloaded From: http://proceedings.spiedigitallibrary.org/ on 05/24/2017 Terms of Use: http://spiedigitallibrary.org/ss/termsofuse.aspx Proc. of SPIE Vol. 9744 974402-2 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 05/24/2017 Terms of Use: http://spiedigitallibrary.org/ss/termsofuse.aspx

show abstract

Wide transparency range and high refractive index lead–niobium-germanate glass thin films

Cited by 13 publications

References 20 publications

Surface Plasmon-Coupled Emission and Fabry−Perot Resonance in the Sample Layer: A Theoretical Approach

Surface Plasmon-Coupled Emission and Fabry−Perot Resonance in the Sample Layer: A Theoretical Approach

Nanostructuring the Er3+ distribution in PbO–Nb2O5–GeO2 thin film glasses

Pulsed laser deposition of rare-earth-doped glasses: a step toward lightwave circuits

Contact Info

Product

Resources

About