Статья

Strong Tb3+ emission of TbAlO3 at room temperature

Masami SekitaNational Institute for Research in Inorganic Materials, Namiki, Tsukuba-shi, Ibaraki 305, JapanYasuto MiyazawaNational Institute for Research in Inorganic Materials, Namiki, Tsukuba-shi, Ibaraki 305, JapanShôji MoritaNational Institute for Research in Inorganic Materials, Namiki, Tsukuba-shi, Ibaraki 305, JapanHideyuki SekiwaNational Institute for Research in Inorganic Materials, Namiki, Tsukuba-shi, Ibaraki 305, JapanYoichiro SatoNational Institute for Research in Inorganic Materials, Namiki, Tsukuba-shi, Ibaraki 305, Japan

1994en

ABI

Аннотация

Optical spectra are measured for transparent and colorless TbAlO3 single crystals grown by the Czochralski method in a reducing atmosphere, although those grown in an inert atmosphere show blackbody color due to broadband absorption of Tb4+ ions. This is a report on strong Tb3+ emission spectrum at room temperature of aluminates and relevant crystals which contain the Tb ion as a stoichiometric agent. All fine structures in absorption and emission spectra can be assigned to the intra-4f transitions of Tb3+ ions. Similar concentration quenching is observed in TbxGd1−xAlO3 system to that in the Nd:YAG crystals; however, the quenching is found to be very small compared with that of the Nd:YAG. An order estimate of the induced emission cross section for the strongest emission line is calculated to be about 6×10−21 cm2.

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Идентификаторы

DOI: 10.1063/1.112682

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