Radiation Hardness of Nd:GdVO4 Laser Crystal under γ-Ray Irradiation
М. Х. АшуровInstitute of Nuclear Physics of the Academy of Sciences of Uzbekistan, Mirzo Ulugbek District, Ulugbek Village, Tashkent, 100214, UzbekistanYu. D. ZavartsevProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, RussiaA. I. ZagumennyĭInstitute of Nuclear Physics of the Academy of Sciences of Uzbekistan, Mirzo Ulugbek District, Ulugbek Village, Tashkent, 100214, UzbekistanSh. Kh. IsmoilovInstitute of Nuclear Physics of the Academy of Sciences of Uzbekistan, Mirzo Ulugbek District, Ulugbek Village, Tashkent, 100214, UzbekistanYu. L. KalachevProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, RussiaS. A. KutovoĭProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, RussiaВ. А. МихайловProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, RussiaИ. НуритдиновInstitute of Nuclear Physics of the Academy of Sciences of Uzbekistan, Mirzo Ulugbek District, Ulugbek Village, Tashkent, 100214, UzbekistanИ. А. ЩербаковProkhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia
ABI
Аннотация
The radiation hardness of neodymium-doped gadolinium vanadate crystal (Nd:GdVO4) has been investigated. Crystal with sizes of 4×4×8 mm doped to a level of 0.5% Nd3+ and (for comparison) undoped GdVO4 crystal were γ-irradiated by a 60Co source to an absorbed dose of about 106 to 107 rad. The photoinduced absorption spectra of the crystals have been studied. Intense lasing with a differential efficiency up to about 25% was obtained in an irradiated Nd:GdVO4 crystal. It is shown that irradiation of a crystal up to a dose of 107 rad does not reduce significantly its laser efficiency.
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