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ZHANG Liangmin ZHANG Jingwen SHAO Zongshu MU Xiaodong CHEN Huanchu JIANG Minhua 《Chinese Journal of Lasers》1996,5(6):526-534
MechanismforPhaseConjugationReflectionsofTwoMutuallyCoherentBeamsfromPotassiumSodiumStrontiumBariumNiobate¥ZHANGLiangmin;ZHAN... 相似文献
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ZHANG Liangmin SHAO Zongshu ZHANG Jingwen MU Xiaodong CHEN Huanchu JIANG Minhua 《Chinese Journal of Lasers》1996,5(3):235-241
Mutually Pumped Phase Conjugation of Three Incoherent Beams with a Novel Photorefractive CrystalMutuallyPumpedPhaseConjugatio... 相似文献
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TheDynamicBehaviourAnalysisofUp-ConversionLuminescenceinErP_5O_(14)GlassTheDynamicBehaviourAnalysisofUp-ConversionLuminescence... 相似文献
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ZENG Dingli XIE Shizhong SUN ChengchengMAO Weiming ZHOU Bingkun 《Chinese Journal of Lasers》1997,6(6):499-505
DesignandCharacterizationofNovelCombFiltersBasedonPeriodicalFiberBraggGratingsZENGDingliXIEShizhongSUNChengchengMAOWeimingZHO... 相似文献
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1 Introduction Inthefieldofatomoptics,breakthroughsintheevaporativecoolingofdilutealkaligaseshaveallowedthegenerationofBose Einsteincondensates(BEC) [1,2 ] .Sincethen ,therehavebeenmanyinterestsincreatinganatomlaserandexploringitsnovelproperties[3 ] .Thefirsta… 相似文献
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TIAN Nailiang 《Chinese Journal of Lasers》1999,8(4):372-376
Introduction TheinvestigationofdirectcrystallizationofYBa2Cu3O7superconductorbylaserirradiationYBaCuOmaterialofstoichiometrical123compositionisinterested.Thedirectlasersynthesisofhightemperaturesuperconductorhasspecificdominace[1].Itisthefinestru… 相似文献
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水溶液中DNA紫外辐射损伤的分子机制研究 总被引:6,自引:1,他引:5
以激光喇曼光谱分析技术,对不同紫外辐射时间条件下DNA在水溶液中产生的损伤状况进行研究,结果表明,体外条件下单纯DNA水溶液中由紫外辐射直接造成C→T的可能性(具体反映在C→U这一过程中)是不存在的。胞嘧啶有C4原子处氨基减少可能,但并无假设衍生形成的尿嘧啶的C4O增色表现,不支持胞嘧啶脱氨基直接转变为酮式(成为尿嘧啶)的模型。胞嘧喧N4H变形振动的减色似可能证明胞嘧啶的亚氨基化,616cm^-1 相似文献
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原卟啉(PP)和血卟啉(HP)对DNA空间结构微观光敏损伤的特征许以明,张志义(中国科学院生物物理研究所北京100101)CharacterofMicrocosmicandPhotosensitveDamageofPPandHPtoThespaceS... 相似文献
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血卟啉衍生物HPD活性组份DHE对DNA空间结构微观光敏损伤特征许以明,张志义(中国科学院生物物理研究所北京100101)CharacterofMicrocosmicandPhotosensitiveDamageofActiveComponeteDH... 相似文献
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The hydrogen bonded complexes between carbonyl bases and hydroxylic derivatives have been extensively studied by infrared spectrometry; by comparison very little Raman data have been reported in the literature. Some qualitative measurements on the v C=O band of acetone dissolved in water-tetrachloride mixtures have been performed by Singurel1. Quantitative data on the absolute Raman intensity have been obtained for complexes involving cyclohexanone2, acetone, acetophenone3 and methylacetate4. For these systems, hydrogen bond formation brings about a moderate intensity enhancement of the v C=O band. In this work the Raman intensity of the v C=O band of ethylformate (EtFo) complexed with phenol derivatives is investigated. 相似文献
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纤维与水溶液状态下DNA空间构象的激光拉曼光谱分析 总被引:3,自引:1,他引:2
本文用改进的Brown比值、DNA分子拉曼强度与试样环境相对湿度的函数关系两种方法,分析了反映小牛胸腺DNA在纤维状态与水溶液中构象的激光拉曼数据。我们认为,应用1807/I1100计算DNA纤维中A型构象的比例;在水溶液中,DNA以B型构象为主,但还存在A型构象,这与紫外共振激光拉曼分析结果相同,对此进行了有关机制的讨论。 相似文献
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本文主要讨论半导体器件的晶格质量问题,检测评估工艺过程对基质晶格所造成的损伤程度。文中得出Raman线宽与格位扭曲角<θ>_(rms)的关系,一个良好的器件,Raman谱半高宽应控制在3一6cm ̄(-1)以内,对应的<θ>rms约为1~3 相似文献