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公开(公告)号:US4985226A
公开(公告)日:1991-01-15
申请号:US366655
申请日:1989-06-15
申请人: Shuichi Satoh , Kazuwo Tsuji , Takeru Nakashima , Shuji Yazu , Yosio Nisida , Kiyofumi Muro , Yuzo Demizu , Masuo Nakagawa , Moritami Okada
发明人: Shuichi Satoh , Kazuwo Tsuji , Takeru Nakashima , Shuji Yazu , Yosio Nisida , Kiyofumi Muro , Yuzo Demizu , Masuo Nakagawa , Moritami Okada
IPC分类号: C30B33/00 , G11B7/0045 , G11B7/0055
CPC分类号: G11B7/0055 , C30B29/04 , C30B33/00 , G11B7/00453
摘要: A hole-burning material which comprises at least one hole which is formed on a zero-phonone line and semi-permanently lasts without suffering from any change in the temperature range from 2 to 120 K. and which can be erased by irradiation of excited light having an energy larger than the zero-phonone line, in which the burnt holes have long life and deep depth and any single holes can be erased.