| Project/Area Number |
05453125
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
無機工業化学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
HIRAO Kazuyuki Fac.Eng., Kyoto Univ., Assoc.Prof.,, 工学部, 助教授 (90127126)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Katsuhisa Fac.Eng., Kyoto Univ., Instructor, 工学部, 助手 (80188292)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1994: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1993: ¥5,700,000 (Direct Cost: ¥5,700,000)
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| Keywords | Hole Burning / Samarium / Optical Memory / Multiplexed Memory / Borate Glass / PHB Phenomenon / 光化学 / 均一線幅 / ガラス / アルカリイオン / 蛍光スペクトル |
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| Research Abstract |
We have observed the persistent spectral hole burning at room temperature for Sm^<2+> ion doped in alumino-borate, magnesium borate and borosilicate glasses. Hole burning measurement and phonon sideband spectra of these borate glasses indicate that the optical hole is closely related to the local environment of optical center. Especially, the unusual generation of non-bridging oxygen around Sm^<2+> ion seems to be the origin of broadening the hole width for Sm^<2+> doped in borate glasses. Substituting sodium oxide with alumina can only decrease the hole width considerably in borate glasses, which may be due to capturing non-brdging oxygens to [AlO_4] tetrahedra.
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