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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 7 — Jul. 1, 2012
  • pp: 1569–1579

Yb3+ ion concentration effects on 1μm emission in tellurite glass

Sathravada Balaji, Atul D. Sontakke, and K. Annapurna  »View Author Affiliations


JOSA B, Vol. 29, Issue 7, pp. 1569-1579 (2012)
http://dx.doi.org/10.1364/JOSAB.29.001569


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Abstract

The effects of Yb3+ ion concentration on physical, optical, and spectroscopic properties have been studied in a low phonon (590cm1) barium-lanthanum-tellurite glass. Due to the unfeasibility of Judd-Ofelt theory Yb3+-doped systems, the oscillator strength of absorption transition, F27/2F5/22 has been evaluated by using the Smakula equation. The nature of emission from F25/2F7/22 transition of Yb3+ ions is described theoretically by using a rate equation in comparison with experimental results. By applying reciprocity (RM) and Fuchtbauer-Ladenburg methods on emission spectra as well as the excitation random walk model on measured fluorescence lifetimes, the radiation trapping and concentration quenching effects have been discussed. Considering all the spectroscopic and laser performance parameters, an optimum Yb-ion doping concentration (YT1) has been determined, and the gain measurements performed on the sample revealed a flat gain over a broad wavelength range could be achieved even with a low (20%) excitation population density. A comparative study with other hosts revealed the potentiality of the present glass for 1 micron emission.

© 2012 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Materials

History
Original Manuscript: February 24, 2012
Revised Manuscript: April 20, 2012
Manuscript Accepted: April 21, 2012
Published: June 11, 2012

Citation
Sathravada Balaji, Atul D. Sontakke, and K. Annapurna, "Yb3+ ion concentration effects on ∼1  μm emission in tellurite glass," J. Opt. Soc. Am. B 29, 1569-1579 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-7-1569

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