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Proceedings Paper

Er3+- and Yb3+-doped YAG crystals for eye-safe laser systems
Author(s): Zygmunt Mierczyk; Krzysztof Kopczynski; Andrzej Gietka; Tadeusz Lukasiewicz; Zygmunt Frukacz; Marek Swirkowicz
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Paper Abstract

There is considerable interest in compact pulsed high peak power laser sources emitting at wavelengths near 1.55 micrometers . Rangefinders and other applications with free space propagation could be strongly benefit of such devices. The wavelength of around 1.55 micrometers is in the eyesafe regime where significantly higher pulse energies can be used without damaging human eyes. Erbium and ytterbium doped YAG single crystals were obtained by the Czochralski method. The basis conditions of growth and the results of optical homogeneity measurements of the obtained crystals are presented. Absorption spectra of these Er3+- and Yb3+-doped YAG crystals were measured in the spectral range 190 divided by 5000 nm at room temperature. Excitation and luminescence spectra were also recorded at room temperature with a JOBIN-YVON spectro fluorometer using a diode laser as an excitation source. The measurements of the lifetime of the Er3+ ions in the upper laser level of the samples were made by the direct method with pulse excitation.

Paper Details

Date Published: 4 October 2000
PDF: 4 pages
Proc. SPIE 4237, Laser Technology VI: Progress in Lasers, (4 October 2000); doi: 10.1117/12.402849
Show Author Affiliations
Zygmunt Mierczyk, Military Univ. of Technology (Poland)
Krzysztof Kopczynski, Military Univ. of Technology (Poland)
Andrzej Gietka, Military Univ. of Technology (Poland)
Tadeusz Lukasiewicz, Institute of Electronic Materials Technology (Poland)
Zygmunt Frukacz, Institute of Electronic Materials Technology (Poland)
Marek Swirkowicz, Institute of Electronic Materials Technology (Poland)

Published in SPIE Proceedings Vol. 4237:
Laser Technology VI: Progress in Lasers
Wieslaw L. Wolinski; Zdzislaw Jankiewicz, Editor(s)

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