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Fe:KNbO_3晶体熔盐法生长及其光折变效应 被引量:1
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作者 沈德忠 蒋达娅 +4 位作者 童小林 张合义 何雪华 陈尔立 刘越 《人工晶体学报》 EI CAS CSCD 1990年第1期1-4,共4页
本文叙述了 Fe:KNbO_3晶体的生长,讨论了铁离子的分凝系数及 Fe:KNbO_3的畴结构,介绍了该晶体的光折变测量结果,首次报导了室温自泵浦相位共轭效应,自泵浦反射率达70%。
关键词 铌酸钾 晶体 光折变效应 熔盐法
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OBSERVATION OF SELF-PUMPED PHASE CONJUGATION WITH HIGH REFLECTIVITY AND FAST RESPONSE IN Cu-DOPED KNSBN CRYSTAL
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作者 吕新亮 岳学锋 +7 位作者 宋永远 孙大亮 姜全中 陈焕矗 许京军 武元庆 刘思敏 张光寅 《Chinese Science Bulletin》 SCIE EI CAS 1992年第24期2038-2042,共5页
Self-pumped phase conjugation (SPPC) is completely self-contained and requires no external mirrors, pumping beams or applied electric fields. Because of its simplicity and high reflectivity, SPPC has a host of poten... Self-pumped phase conjugation (SPPC) is completely self-contained and requires no external mirrors, pumping beams or applied electric fields. Because of its simplicity and high reflectivity, SPPC has a host of potential applications including correcting spatial phase distortion, and optical image processing. At the present time, SPPC has been realized in BaTiO<sub>3</sub>, KNbO<sub>3</sub>, Ce-doped SBN and KNSBN single crystals. The KNSBN 展开更多
关键词 photorefracfive effect KNSBN CRYSTAL self-pumped phase CONJUGATION
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Crystal growth and high reflectivity self-pumped phase conjugation of (Cu, Ce)-doped (KNa)_(0.1)(Sr_(0.6)Ba_(0.4))_(0.9)Nb_2O_6 crystal
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作者 张日理 谢祥寿 +4 位作者 莫党 窦硕星 廉英武 张家森 叶佩弦 《Chinese Science Bulletin》 SCIE EI CAS 1995年第4期295-299,共5页
Potassium sodium strontium barium niobate (KNSBN) crystal is one of the important photorefractive ferroelectric crystal materials, not only having good photorefractive properties, but also many advantages over other p... Potassium sodium strontium barium niobate (KNSBN) crystal is one of the important photorefractive ferroelectric crystal materials, not only having good photorefractive properties, but also many advantages over other photorefractive crystal materials: (ⅰ) it is easy to grow in large size, (ⅱ) neither twinning nor poling problems exist; (ⅲ) it can accommodate a wide range of solution; (ⅳ) it is easy to be doped with many kinds of dopants. 展开更多
关键词 KNSBN CRYSTAL PHOTOREFRACTIVE effect self-pumped phase conjugation.
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Photorefractive Material KNSBN:Cu
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作者 姜全忠 宋永远 +2 位作者 孙大亮 吕新亮 陈焕矗 《Science China Mathematics》 SCIE 1993年第8期1006-1014,共9页
This paper reports systematically the crystal growth and photorefractive properties of Cu-doped KNSBN, and the mechanism of the Cu ions' effects on the photorefractive properties of KNSBN. The Cu ions doped in KNS... This paper reports systematically the crystal growth and photorefractive properties of Cu-doped KNSBN, and the mechanism of the Cu ions' effects on the photorefractive properties of KNSBN. The Cu ions doped in KNSBN can form two energy levels in the band gap, thus play important roles in the photorefractive process. They increase the effective electron combination center concentration, which results in the modification of the photorefractive properties of KNSBN. The two-wave coupling gain coefficient of KNSBN: Cu is two times greater than that of KNSBN. The photorefractive sensitivity of Cudoped KNSBN is estimated to be in the order of 10^(-3) cm^2/J. Its cat-SPPC reflectivity can reach 65% corresponding to an response time less than 8 s. 展开更多
关键词 photorefraetive EFFECT KNSBN: CU CRYSTALS crystal growth photovoltaic EFFECT self-pumped phase conjugation.
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