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高荧光及强背景噪声情况下表面增强拉曼散射光谱提取方法研究 被引量:2
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作者 赵志刚 赵伟 +1 位作者 claire gu 黄松岭 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2010年第8期2146-2150,共5页
试提出一种高荧光及强背景噪声情况下表面增强拉曼散射光谱的提取方法。该方法从分析荧光谱及背景噪声信号的组成入手,构建相应模型对荧光谱及噪声信号进行估计,通过比较估计结果与实际数据的差别识别谱峰信号,并定位谱峰的基底位置。... 试提出一种高荧光及强背景噪声情况下表面增强拉曼散射光谱的提取方法。该方法从分析荧光谱及背景噪声信号的组成入手,构建相应模型对荧光谱及噪声信号进行估计,通过比较估计结果与实际数据的差别识别谱峰信号,并定位谱峰的基底位置。通过在若丹明6G、前列腺特异抗原测量及pH值传感实验中的实际应用检验可知,该方法可提高表面增强拉曼散射光谱信号的分辩率和测量准确度,在微量物质鉴别及物质含量定量测量方面有较好的应用前景。 展开更多
关键词 表面增强拉曼散射光谱 荧光谱 背景噪声 光谱信号检测
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一种新型高非线性色散平坦光子晶体光纤结构 被引量:29
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作者 刘洁 杨昌喜 +1 位作者 claire gu 金国藩 《光学学报》 EI CAS CSCD 北大核心 2006年第10期1569-1574,共6页
提出了一种新的高非线性色散平坦光子晶体光纤结构,引入了一个衡量非线性和色散平坦的品质因子δ。采用平面波展开法,研究了气孔尺寸对光子晶体光纤色散特性和非线性的影响。新结构在第一圈空气孔的中间插入六个附加小孔,使得光子晶体... 提出了一种新的高非线性色散平坦光子晶体光纤结构,引入了一个衡量非线性和色散平坦的品质因子δ。采用平面波展开法,研究了气孔尺寸对光子晶体光纤色散特性和非线性的影响。新结构在第一圈空气孔的中间插入六个附加小孔,使得光子晶体光纤有更小的有效模场面积,提高了光纤的非线性。通过控制第一圈和第三圈空气孔以及附加小孔的直径,使得该光子晶体光纤在大约330 nm的波长范围内,光纤的色散系数介于±0.5 ps/(km.nm)之间,在大约230nm的波长范围内,光纤的色散系数介于±0.1 ps/(km.nm)之间,在大约200 nm的波长范围内,光纤的色散系数D的值介于±0.05 ps/(km.nm)之间。光纤的有效模场面积为2.26μm2。衡量非线性和色散平坦的品质因子δ=11.8 ps.W/μm2。 展开更多
关键词 光子晶体光纤 非线性 有效模场面积 色散 色散平坦
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3D displays: toward holographic video displays of 3D images 被引量:3
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作者 Pochi Yeh claire gu 《Chinese Optics Letters》 SCIE EI CAS CSCD 2013年第1期11-17,共7页
As the flat panel displays (Liquid Crystal Displays, AMOLED, etc.) reach near perfection in their viewing qualities and display areas, it is natural to seek the next level of displays, including 3D displays. There is ... As the flat panel displays (Liquid Crystal Displays, AMOLED, etc.) reach near perfection in their viewing qualities and display areas, it is natural to seek the next level of displays, including 3D displays. There is a strong surge in 3D liquid crystal displays as a result of the successful movie Avatar. Most of these 3D displays involve the employment of special glasses that allow one view perspective for each of the eyes to achieve a depth perception. Such displays are not real 3D displays. In fact, these displays can only provide one viewing perspective for all viewers, regardless of the viewer's position. In addition, a fundamental viewing problem of focusing and accommodation exist that can lead to discomfort and fatigue for many viewers. In this paper, the authors review the current status of stereoscopic 3D displays and their problems. The authors will also discuss the possibility of using flat panels for the display of both phase and intensity of video image information, leading to the ultimate display of 3D holographic video images. Many of the fundamental issues and limitations will be presented and discussed. 展开更多
关键词 视频显示器 3D显示器 全息 3D液晶显示器 影像 AMOLED 显示区域 观看角度
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A Novel Multi-Channel Dispersion Slope Compensator Using Sampled FBG
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作者 J. J. Pan claire gu Albert Li 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期-,共2页
A novel dispersion slope compensator is proposed and fabricated using a sampled fiber grating. The dispersion slope of this compensator is demonstrated to match that of Coming LS fiber for a multi-channel 50GHz WDM sy... A novel dispersion slope compensator is proposed and fabricated using a sampled fiber grating. The dispersion slope of this compensator is demonstrated to match that of Coming LS fiber for a multi-channel 50GHz WDM system. 展开更多
关键词 A Novel Multi-Channel Dispersion Slope Compensator Using Sampled FBG in for as WDM with GHz
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