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Decay Time of 2.09 eV Luminescence of S2--Vacancy Centers and Their Optical and Thermal Stability in NaCl:S2 Crystals (1999)

Ye, Rongbin ; Ohta, Koji ; Baba, Mamoru ; [weitere]

Springer

Optical review 6 (1999), S. 82-87

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ISSN: 1349-9432

Schlagwort(e): sodium chloride ; sulfur ; photoluminescence ; decay time ; nonradiative transition ; laser active ; center ; solid-state laser

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract An investigation was carried out on decay time of the 2.09 eV emission of S2–vacancy pair centers in NaCl crystals. When the crystal was excited by a pulsed 337 nm light from an N2 laser, the 2.09 eV yellow luminescence principally decayed with the lifetime of 14.2 μs at low temperatures, and exhibited a weak thermal quenching with an activation energy of 51.3 meV above about 150 K. Such S2--vacancy pair centers responsible for the 2.09 eV luminescence were thermally stable at room temperature, and not bleached even when exposed to ultraviolet lights below about 5 eV. Thus, the 2.09 eV emission center possibly can be used as a solid-state laser active center working at room temperature.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s10043-999-0082-8

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