| 电子俘获材料的红外最小可激发阈值 |
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| 引用本文： | 范文慧,王永昌,侯洵,杜力,杨斌洲,赵卫,牛丽红.电子俘获材料的红外最小可激发阈值[J].中国激光,1999,26(3):257-262. |
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| 作者姓名： | 范文慧 王永昌 侯洵 杜力 杨斌洲 赵卫 牛丽红 |
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| 作者单位： | 西安交通大学理学院现代物理研究所，中国科学院西安光机所瞬态光学技术国家重点实验室 |
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| 摘 要： | 在对撞脉冲锁模ＮｄＹＡＧ激光器产生的１．０６４μｍ超短红外脉冲激光激励下，采用参考光和测量光同时入射的测量方案，利用一台可见光条纹相机进行了电子俘获材料ＣａＳＥｕ，Ｓｍ的红外最小可激发阈值的研究，结果表明：在可见光条纹相机最小可探测能量密度Ｊｍｉｎ＝８．３×１０－１０Ｊ／ｍｍ２的条件下，测得电子俘获材料ＣａＳＥｕ，Ｓｍ的红外最小可激发阈值优于４．８×１０－９Ｊ／ｍｍ２。
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| 关 键 词： | 电子俘获材料，最小可激发阈值，超短红外光脉冲，条纹相机 |
| 收稿时间： | 1997/10/20 |
Minimum Excited Threshold in Electron Trapping Materials |
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| Abstract: | By means of projecting a reference light and measuring the light on the photocathode of a streak camera, the minimum excited threshold in electron trapping materials can be measured. The infrared minimum excited threshold of CaS∶Eu, Sm is measured to be less than 4.8×10 -9 J/mm 2 by a visible streak camera. The minimum detectable energy density of the camera is less than 8.3×10 -10 J/mm 2 (532 nm). The phosphor investigated is efficiently stimulated with the 1.064 μm photons from a pulsed CPM Nd∶YAG laser. According to the result, it is shown that this kind of novel materials might be used in the ETM based infrared photocathodes and other fields. |
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| Keywords: | electron trapping materials minimum excited threshold ultrafast infrared laser pulse streak camera |
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