Burning of thermoresistant spectral holes in a neutron-irradiated sapphire

Spectral hole burning in 313.2, 368.4 and 391.1 nm lines of aggregate defects in neutron-irradiated Al 2O 3 has been performed at low temperatures. The holes reveal extremely high thermoresistance and can be restored even after warming the specimen above room temperature. The phototransformation mec...

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Veröffentlicht in:	Optics communications 1989-10, Vol.73 (3), p.223-226
Hauptverfasser:	Sildos, I., Aizengendler, M., Dolindo, I., Renge, I.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Physics Visible and ultraviolet spectra
Online-Zugang:	Volltext
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Zusammenfassung:	Spectral hole burning in 313.2, 368.4 and 391.1 nm lines of aggregate defects in neutron-irradiated Al 2O 3 has been performed at low temperatures. The holes reveal extremely high thermoresistance and can be restored even after warming the specimen above room temperature. The phototransformation mechanisms of F 2 aggregates have been investigated. At room temperature the cyclic photobleaching of 303→360→450→360, (303) nm absorption bands has been carried out and a one-photon photoionization mechanism for the first two steps has been supposed.
ISSN:	0030-4018 1873-0310
DOI:	10.1016/0030-4018(89)90088-6