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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 3 — Mar. 1, 2013
  • pp: 663–677

Spectroscopy of upper energy levels in an Er3+-doped amorphous oxide

Laura Agazzi, Kerstin Wörhoff, Andreas Kahn, Matthias Fechner, Günter Huber, and Markus Pollnau  »View Author Affiliations


JOSA B, Vol. 30, Issue 3, pp. 663-677 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000663


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Abstract

A spectroscopic study of the population mechanisms in erbium-doped amorphous aluminum oxide up to the H11/22/S3/24 levels is performed. Via luminescence decay measurements, absorption and emission spectra, and a Judd–Ofelt analysis, we determine luminescence lifetimes, radiative and nonradiative decay-rate constants, and branching ratios of the Er3+ intermanifold transitions. With a continuous-wave pump-probe technique, the excited-state absorption (ESA) spectrum is recorded between 900 and 1800 nm and the cross sections of the ESA transitions I13/24I9/24, I13/24F9/24, and I11/24F7/24 are determined. The microparameters and efficiencies of resonant and phonon-assisted energy-migration and energy-transfer upconversion (ETU) processes among Er3+ ions occurring from the first and second excited states are evaluated. From the ratio of the S3/24 and F9/24 luminescence intensities as a function of Er3+ concentration, we prove the existence and quantify the macroscopic ETU coefficient of the two-phonon-assisted ETU process (I13/24,I11/24)(I15/24,F9/24).

© 2013 Optical Society of America

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Spectroscopy

History
Original Manuscript: September 5, 2012
Revised Manuscript: December 4, 2012
Manuscript Accepted: December 26, 2012
Published: February 21, 2013

Citation
Laura Agazzi, Kerstin Wörhoff, Andreas Kahn, Matthias Fechner, Günter Huber, and Markus Pollnau, "Spectroscopy of upper energy levels in an Er3+-doped amorphous oxide," J. Opt. Soc. Am. B 30, 663-677 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-3-663


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