| 掺杂KNSBN晶体吸收对光强的依赖特性 |
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| 引用本文： | 李艳秋,侯方林.掺杂KNSBN晶体吸收对光强的依赖特性[J].光学学报,1997,17(8):148-1162. |
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| 作者姓名： | 李艳秋 侯方林 |
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| 作者单位： | [1]哈尔滨工业大学应用物理系 [2]黑龙江省科学技术委员会 |
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| 基金项目： | 哈尔滨工业大学科学基金,黑龙江省科学基金 |
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| 摘 要： | 研究了Ｃｏ：ＫＮＳＢＮ晶体和重还原Ｃｏ：ＫＮＳＢＮ晶体中光致吸收的变化特性。Ｃｏ：ＫＮＳＢＮ晶体的吸收系数随泵浦光强的增加而减小，吸收系数变化的最大值为３．２ｃｍ＾－１，重还原Ｃｏ：ＫＮＳＢＮ的吸收系数随泵浦光强的增加而增加，吸收系数变化的最大值为６．５ｃｍ＾－１，在泵浦光关掉后，探测光频率很高的增幅振荡，然后呈现阻尼振荡，采用最近建立的双载流子（电子，空穴）和多重陷阱能级（两个深陷阱能级，两个浅
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| 关 键 词： | 光致吸收 KNSBN 晶体 光强 光折变晶体 |
| 收稿时间： | 1996/7/7 |
ENHANCED ELECTRON CYCLOTRON EMISSION DURING LOWER HYBRID WAVE DRIVE |
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| ZHOU Hailin,JIAN Guangde,HUANG Lin,WANG Enyao,XU Deming,CAO Jiangyong,LI Xiaodong.ENHANCED ELECTRON CYCLOTRON EMISSION DURING LOWER HYBRID WAVE DRIVE[J].Acta Optica Sinica,1997,17(8):148-1162. |
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| Authors: | ZHOU Hailin JIAN Guangde HUANG Lin WANG Enyao XU Deming CAO Jiangyong LI Xiaodong |
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| Abstract: | Intensity dependent absorption in doped KNSBN crystals have been studied. Light induced absorption and transparency in Co:KNSBN and heavy reduced Co:KNSBN have been experimentally measured. Light induced absorption increases and reaches a saturate value of 6.5 cm -1 in heavy reduced Co:KNSBN crystal. Light induced absorption decreases and reaches a saturate value of 3.2 cm -1 in Co:KNSBN crystal. The transparent intensity of probe beam present a oscillation behavior when the pump beam switch off in heavy reduced Co:KNSBN crystal. These behaviors are explained by a theory of two types of charge carriers with multiple traps. Finally, we predict that the light induced absorption and transparency should be useful for making spatial intensity distributions more homogeneous and incoherent signal amplification. |
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| Keywords: | Electron cyclotron emission Lower hybrid wave drive Parametric instability |
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