Authors

G. Turri; V. Sudesh; M. Richardson; M. Bass; A. Toncelli;M. Tonelli

Comments

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Abbreviated Journal Title

J. Appl. Phys.

Keywords

RARE-EARTH IONS; OPTICAL-PROPERTIES; FLUOROPHOSPHATE GLASSES; RADIATIVE; LIFETIMES; FIBER AMPLIFIER; UP-CONVERSION; MU-M; THULIUM; LASER; CRYSTALS; Physics, Applied

Abstract

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. (3)F(4) excited state fluorescence decay dynamics was investigated at temperatures from 8 to 300 K and the results revealed a strong dependence of the (3)F(4) 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 mu m laser purposes. Tm(3+)-doped germanate glass shows a longer lifetime than silica, a comparable value of stimulated emission cross section and some interesting temperature-independent properties.

Journal Title

Journal of Applied Physics

Volume

103

Issue/Number

9

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

7

WOS Identifier

WOS:000255983200004

ISSN

0021-8979

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