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Applied Physics Letters / Volume 79 / Issue 22 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 79, 3585 (2001); http://dx.doi.org/10.1063/1.1419033 (3 pages)

Modified spontaneous emission in erbium-doped SiO2 spherical colloids

M. J. A. de Dood1, L. H. Slooff1, A. Polman1, A. Moroz1,2, and A. van Blaaderen1,2

1FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
2Physics and Chemistry of Condensed Matter, Debye Institute, Utrecht University, P.O. Box 80.000, 3508 TA Utrecht, The Netherlands

(Received 23 July 2001; accepted 25 September 2001)

Spherical SiO2 colloids with two different diameters (175 nm, 340 nm) were doped with erbium at different concentrations. The spheres show sharply peaked photoluminescence centered at 1.535 μm, due to intra-4f transitions in Er3+. From measurements of the Er decay rate for different Er concentrations the decay rate of isolated Er ions (i.e., in absence of concentration quenching) was determined for the two colloid diameters. The data were compared to spontaneous emission rates derived from calculations of the local optical density of states in the colloids. The calculation predicts a large difference in the spontaneous emission rate for both colloid sizes (61 vs 40 s−1), in perfect agreement with the measured data. © 2001 American Institute of Physics.

© 2001 American Institute of Physics

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KEYWORDS and PACS

Keywords

silicon compounds, erbium, spontaneous emission, photoluminescence, impurity states, colloids

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1419033

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    L. H. Slooff, M. J. A. de Dood, A. van Blaaderen, and A. Polman, Appl. Phys. Lett. 76, 3682 (2000)APPLAB000076000025003682000001.

    M. Cai, O. Painter, and K. H. Vahala, Phys. Rev. Lett. 85, 74 (2000).

    H. C. Chow and R. C. Powell, Phys. Rev. B 21, 3785 (1980).

    V. P. Gapontsev, A. A. Izyneev, Yu. E. Sverchov, and M. R. Syrtlanov, Sov. J. Quantum Electron. 11, 1101 (1981)SJQEAF000011000008001101000001.

    M. J. A. de Dood, L. H. Slooff, A. Moroz, A. van Blaaderen, and A. Polman, Phys. Rev. A 64, 033807 (2001).

    A. M. Vredenberg, N. E. J. Hunt, E. F. Schubert, D. C. Jacobson, J. M. Poate, and G. J. Zydzik, Phys. Rev. Lett. 71, 517 (1993).


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