Optical Bleaching of V Centers at Liquid Nitrogen Temperature in KI Crystals Containing Excess Iodine

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概要

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• Optical absorption, luminescence and F.SR of F-t)'pe centers have been studied forKl crystals containing excess iodine. Colored cr)'stals were irradiated previously witlaV3 light at liquid nitrogen temperature (LNT) to convert the primary V centers intoother F-type centers. Dichroism is induced iua tlae absorption bands of the crystal ataround 420 and 800 nm by irradiation with the [1103- or [100]-polarized light. ESRspectrum of 11 equally spaced lines is detected at LN'T under a magnetic field alouag a[110] axis of the crystal. A bsorption bands, lumineseexace axad ESR limaes due to tlaesecenters disappear at 'temperatures above 110 K and original V centers recover in pureKl crystals. We conclude that V. and F. centers are generated simultaneously by theoptical bleaching of the primary V centers.

• 社団法人日本物理学会の論文
• 1992-12-15

著者

• Harami Tadahiko

  Department Of Physics Faculty Of Science And Engineering Ritsumeikan University

関連論文

• Luminescence Decay of the V-Type Centers in KI Crystals Containing Divalent Cations
• Growth of Alkali Halide Crystals from Aqueous Solutions
• Optical Properties of KI Crystals Containing MnO^_4 or MnO^-_4 Ions
• Thermal Bleaching of V Bands at Room Temperature in Alkali Iodide Crystals Containing Excess Iodine
• Luminescence of V-Type Centers in Potassium and Rubidium Iodide Crystals
• V Bands in RbI Crystals Containing Excess Iodine
• V Centers in KI Crystals Containing Excess Iodine
• Luminescent V-Type Centers in Alkali Iodide Crystals Containing Divalent Cations
• Optical Bleaching of V Centers at Liquid Nitrogen Temperature in KI Crystals Containing Excess Iodine

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