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Journal of Applied Physics / Volume 103 / Issue 9 / LASERS, OPTICS, AND OPTOELECTRONICS

J. Appl. Phys. 103, 093104 (2008); http://dx.doi.org/10.1063/1.2912952 (7 pages)

Temperature-dependent spectroscopic properties of Tm3+ in germanate, silica, and phosphate glasses: A comparative study

Giorgio Turri1, Vikas Sudesh1, Martin Richardson1, Michael Bass1, Alessandra Toncelli2, and Mauro Tonelli2

1CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA
2NEST INFM-CNR, Dipartimento di Fisica, Universitá di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy

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(Received 31 December 2007; accepted 25 February 2008; published online 5 May 2008)

Spectroscopic properties of thulium-doped germanate, silica, and phosphate glasses were measured and compared since such glasses are of interest as materials for fiber lasers in the eye-safe wavelength region. 3F4 excited state fluorescence decay dynamics was investigated at temperatures from 8 to 300 K and the results revealed a strong dependence of the 3F4 lifetime on the host matrix. The temperature-dependent stimulated emission cross section was obtained by using the Fuchtbauer–Ladenburg technique. In phosphate glass the fluorescent lifetime is short, making this material difficult to use for 2 μm laser purposes. Tm3+-doped germanate glass shows a longer lifetime than silica, a comparable value of stimulated emission cross section and some interesting temperature-independent properties.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
  3. RESULTS
    1. Absorption spectrum and Judd–Ofelt analysis
    2. Emission spectra at room temperature
    3. Temperature dependence of emission cross section
    4. Decay dynamics
  4. CONCLUSIONS

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KEYWORDS and PACS

Keywords

fluorescence, germanate glasses, phosphate glasses, silicon compounds, stimulated emission, thulium compounds

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2912952

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

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

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    References

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