共查询到17条相似文献,搜索用时 46 毫秒
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研究了光谱烧孔的填孔过程,在几种有机电子转移型永久性烧孔材料中,得到了光谱烧孔的光擦除过程中孔的擦除程度随样品中受体浓度的减少而减弱,并受擦孔光的光子能量影响,同时与受体本身性质有关的实验结果.得出填孔过程也是一种电子转移过程的结论,并提出了一个能级模型对实验结果进行了分析. 相似文献
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报道固体选通光谱多重光谱烧孔研究的新进展,分析影响多生烧孔形成的一些主要因素,首次报道了在有机材料ZntbP/CA/PhR的非均匀加宽线内获得一次连续烧出100多光谱孔的结果,还进一步报道用穿带激光获得更窄线宽的光谱烧孔的情况。 相似文献
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首次报道一种新的光子选通交谱烧孔体系Zntbp-CA/PhR20K温度下,在对应的非均匀展宽吸收带内的不同波长处实现了一系列光子选通光谱烧孔。文中就孔的温度效应,寿命,光擦除性能以及选通比值G等方面作了不同深度的讨论。 相似文献
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首次报道—种新的无机光子造通光谱烧孔材料——BaSO_4:Sm~ (2+)的烧孔效应.并给出了有关光谱性质的实验结果. 相似文献
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无机材料BaFCl0.5Br0.5:Sm^2+光子选通光谱烧孔 总被引:2,自引:2,他引:0
本文报道了无机材料的BaFCl_(0.5)Br_(0.5):Sm~(2+)的光子选通光谱烧孔.文中叙述了光子选通光谱烧孔的机制.在低温4.2K下进行多孔烧孔和探测.测量了孔的选通性和稳定性.实现了孔的可擦除和重复烧孔.测量结果表明,处于4.2K的BaFCl_(0.5)Br_(0.5):Sm~(2+)样品,在一个非均匀加宽轮廓内可实现1×10~3个以上数目的永久性光谱烧孔. 相似文献
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在光子选通给体0体电子转移光谱烧孔的实验基础上,新采用了偏振方法探测烧出的孔,使孔的检测灵敏度和信噪比均得到了大幅度的提高。以此为工具,烧出了很好的多孔,并做了一系列样品烧孔性能的测试和分析。 相似文献
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Anwar Ali Khan M. S. Abdul Jabar M. Jalaluddin Bakht Amin Bacha Iftikhar Ahmad 《理论物理通讯》2015,64(4):473-478
Spectral hole burning is investigated in an optical medium in the presence of Doppler broadening and Kerr nonlinearity. The Kerr nonlinearity generates coherent hole burning in the absorption spectrum. The higher order Kerr nonlinearity enhances the typical lamb dip of the hole. Normal dispersion in the hole burning region while Steep anomalous dispersion between the two hole burning regions also enhances with higher order Kerr effect. A large phase shift creates large delay or advancement in the pulse propagation while no distortion is observed in the pulse. These results provide significant steps to improve optical memory, telecom devices, preservation of information and image quality. 相似文献
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球形微粒样品室温永久光谱烧孔的动力学过程及多重性研究 总被引:1,自引:0,他引:1
利用球粒表面形态共振,实现室温下的永久光谱烧孔,建立理论模型对动力学过程进行分析,据此对实验结果进行拟合,得到有效成孔速率等参数;并对烧孔的多重性进行研究,将这些结果应用于室温频域光信息存贮将有较好的前景。 相似文献
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建立了单光子光化烧孔的三能级模型,求解了反映质子转位变构机制的速率方程组,推导了成孔过程的动力学特性,获得了可与实验进行比较的解析解.用时域和频域两种方法测量了THP/PMMA和TMP/PMMA薄膜样品光谱烧孔的动力学过程,得到与理论分析一致的规律,并测得了有效成孔速率和成孔时间等参数.这些参数对于评价频域光存贮材料性能有一定意义. 相似文献
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用偏振光谱方法对有机固体材料频域存贮材料进行单光子和双光子的选通光谱烧孔,获得了高的信号背景(噪声)比(SBR)。文章介绍偏振光谱烧孔原理和实验上得到高信号背景比的方法和结果,展示了偏振光谱烧孔技术在高分辨光谱和频域信号存贮应用的良好前景。 相似文献
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S. M. Arabei J.-P. Galaup A. P. Stupak T. A. Pavich E. A. Makarova K. N. Solovyov 《Journal of Applied Spectroscopy》2009,76(3):352-361
Spectral and luminescent properties of recently synthesized compounds of a class of hydroporphyrazines, triarenotetraazachlorins,
in polyvinylbutyral films have been studied. Fluorescence lifetimes have been measured in film and in solution. Fluorescence
quantum yields have been estimated. It is found that annelation of aromatic rings to the pyrrole rings of the tetraazachlorin
macrocycle enhances fluorescence. Quantum-chemical optimization of the geometrical structures of the free-base 1,2-trinaphthotetraazachlorins
has been carried out using the AM1 method. The two isomers were shown to be highly non-planar. Spectral hole burning in absorption
bands of both this compound and free-base 2,3-trinaphthotetraazachlorin in polyvinylbutyral films at 5 K in the wavelength
region of titanium-sapphire laser radiation is possible and is ascribed to NH-photoisomerization.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 76, No. 3, pp. 376–386, May–June, 2009. 相似文献
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In this paper, spectral hole depth dependence on temperature below 10 K in Tm3+:YAG crystal is investigated in detail. A novel model is proposed to analyze the temperature dependence on spectral hole. By using the proposed model, we theoretically deduce the temperature dependence of spectral hole depth. The results are compared with experimental results and they are in good agreement. According to the theoretic results, the optimum temperature in experiment can be found. 相似文献