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Vanadium-doped MgAl2O4 crystals as white light source |
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| Authors: | Yutaka Fujimoto Hiroaki Tanno Shigetomo Yoshida Masanobu Shirai Kouichirou Tanaka Yutaka Kawabe Eiichi Hanamura |
| Institution: | a Chitose Institute of Science and Technology, 758-65 Bibi, Chitose 066-8655, Japan b Japan Science and Technology Corporation, 758-65 Bibi, Chitose 066-8655, Japan c Department of Physics, Kyoto University, Kyoto 606-8224, Japan |
| Abstract: | Spinel MgAl2O4 crystals doped with transition metals show charge-transfer transitions for Ti:MgAl2O4 on one hand and multiplet transitions of (3d)-electrons for Mn:, Fe:, and Co:MgAl2O4 on the other hand. We will show that optical responses of V:MgAl2O4 are closer to those of Ti:MgAl2O4 and also that white emission spectrum is observed. The microscopic process of the white emission is also proposed. |
| Keywords: | 51 20 +d 81 10 Fq 42 55 Rz |
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