NDLI: Rare earth-doped photonic crystals via sol

Content Provider	Springer Nature Link
Author	Almeida, Rui M. Marques, Ana C.
Copyright Year	2008
Abstract	Erbium/ytterbium-doped photonic bandgap materials and structures have been prepared by sol–gel processing, in the form of 1-D structures of the single (Fabry–Perot) and coupled (double) microcavity types, consisting of multilayer stacks of silica and titania. Such multilayers were deposited by spin-coating on silica glass substrates and their reflection spectra were measured in the near infrared range. It was found that, by varying the detection angle, it is possible to broaden the Er$^{3+}$ emission at 1.5 μm, irrespective of the excitation wavelength (514.5 or 980 nm), which is important for applications where broadband emission is necessary, for example for all-optical amplification in dense wavelength division multiplexing (WDM) systems. A remarkable full width at half maximum (FWHM) of 52 nm was achieved for the Er$^{3+}$ emission peak at 1.5 μm, when this rare-earth (RE) dopant was incorporated in a pure silica glass cavity layer. Other described phenomena include Er$^{3+}$ photoluminescence enhancement from microcavities, compared with doped Bragg mirrors and films and enhanced Yb$^{3+}$→Er$^{3+}$ energy transfer in co-doped photonic crystal structures.
Starting Page	307
Ending Page	311
Page Count	5
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	20
Issue Number	1
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2008-02-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation of Materials Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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