天津大学物理系研制的碱卤晶体的色心光信息存储介质新材料一九八八年十一月十九日在天津大学通过鉴定。该材料存储密度达10~7～10~8bits/in~2;反复写入次数在10~3次以上,读出次达10。以上;能量阈值低于4.4×10~2J/cm~3;高温50℃保存24小时,室温存放至少8年,其写入信息不发 New Materials of Color Center Optical Information Storage Medium of Base Halogen Crystal Developed by Department of Physics, Tianjin University passed the appraisal at Tianjin University on November 19, 1988. The material storage density of 10 ~ 7 ~ 10 ~ 8bits / in ~ 2; the number of repeated writes in 10 ~ 3 times above, read up to 10 times. , The energy threshold is lower than 4.4 × 10 ~ 2J / cm ~ 3, the high temperature is stored at 50 ℃ for 24 hours, the room temperature is stored for at least 8 years, and the information is not written