Two types of emitting centers in Cr-doped Y2SiO5 laser crystals

N. V. Kuleshov; V. P. Mikhailov; V. G. Shcherbitsky; B. I. Minkov; B. I. Minkov; T. J. Glynn; T. J. Glynn

doi:10.1364/CLEO_EUROPE.1994.CTuK77

1994 Conference on Lasers and Electro-Optics Europe
Technical Digest Series (Optica Publishing Group, 1994),
paper CTuK77
•https://doi.org/10.1364/CLEO_EUROPE.1994.CTuK77

Two types of emitting centers in Cr-doped Y₂SiO₅ laser crystals

N. V. Kuleshov, V. P. Mikhailov, V. G. Shcherbitsky, B. I. Minkov, and T. J. Glynn

The European Conference on Lasers and Electro-Optics 1994

Amsterdam Netherlands
28 August–2 September 1994
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Poster Session 1 (CTuK)

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N. V. Kuleshov, V. P. Mikhailov, V. G. Shcherbitsky, B. I. Minkov, and T. J. Glynn, "Two types of emitting centers in Cr-doped Y2SiO5 laser crystals," in 1994 Conference on Lasers and Electro-Optics Europe, Technical Digest Series (Optica Publishing Group, 1994), paper CTuK77.

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Abstract

Chromium-doped forsterite and YAG have been shown to be efficient laser materials for the near-infrared. The lasing centers were described as Cr⁴⁺ ions occupying tetrahedrally coordinated positions. Recently, laser action in Cr⁴⁺:Y₂SiO₅ was demonstrated at low temperatures¹ and at room temperature.² One of the most interesting features of this new laser material is the dependence of output spectra on the pump wavelength.¹ Moreover, luminescence properties of the Cr: Y₂SiO₅ were studied in Refs. 3 and 4, but the origin of the second emission, clearly observed at low temperatures, was not determined. In this paper we discuss the spectroscopic properties of tetravalent chromium in two silicates Y₂SiO₅ (YSO) and Gd₂SiO₅ (GSO). The results of polarized optical absorption, emission, and lifetime measurements are presented.

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