【摘 要】
：
The natural sedimentation method combining with the isothermal heating evaporation induced self-assembly is presented to fabricate three-dimensional (3D) colloidal crystals in the curved cavity of the fiber end face. A-50 \mu m-deep cavity is etched by h
【机 构】
：
JiangsuKeyLabofOpto-ElectronicTechnology,SchoolofPhysicalScienceandTechnology,NanjingNormalUniversit
【出 处】
：
ChineseOpticsLetters
论文部分内容阅读
The natural sedimentation method combining with the isothermal heating evaporation induced self-assembly is presented to fabricate three-dimensional (3D) colloidal crystals in the curved cavity of the fiber end face. A-50 \mu m-deep cavity is etched by hydrofluoric acid. The colloidal crystals are characterized by optical and scanning electron microscopy. A 1380-nm stop band is observed by measuring their transmission spectra at normal incidence by an optical spectrum analyzer (OSA).
其他文献
In this letter, we report a Ho:YVO4 laser pumped by a 1.94-μm laser in both continuous-wave (CW) and Q-switched modes. The output performance of the Ho:YVO4 laser is compared with different output coupler transmissions. By use of the output coupler transm
在自适应光学系统中,传统比例-积分控制模型依赖于变形镜的响应矩阵,系统状态的改变会对变形镜响应矩阵造成影响,导致波前校正性能下降。通过重新定义BP(back-propagation)神经网络结构实现哈特曼斜率数据到控制信号的输出,并建立了控制模型。实验结果表明,所提模型摆脱了传统固定模型的限制,具有在线更新控制模型的特点,控制模型收敛性能良好,能适应系统状态变化,有较强的鲁棒性,同时提高了控制精度,一定程度上改善了控制性能。
Generalized morphological operator can generate less statistical bias in the output than classical morphological operator. Comprehensive utilization of spectral and spatial information of pixels, an endmember extraction algorithm based on generalized morp
为了实现大气甲烷(CH_4)浓度的高灵敏、实时检测,研制了一种基于开放光路的高稳定性笼式结构光学谐振腔,并结合离轴积分腔输出光谱技术研制了一种大气CH_4浓度传感系统。采用中心波长为1653 nm的可调谐半导体激光器作为光源,将反射率为99.92%的高反射镜置于距离光源35 cm处构建光学谐振腔。实验测得高反射镜的实际反射率为99.93%,谐振腔的有效光程可达516 m。Allan方差结果表明,当
本文报道了具有合适的载流子浓度,低位错密度和适当p-n结深度的Pb1xSnxTe 和Pb1υSnυSe激光晶体。这种晶体是用水平无籽晶气相生长技术和适当控制生长条件直接得到的,用这两种晶体已经制成OW运转的可调谐二极管激光器。
本文报道了新型发光晶体Na5Pr(WO4)4的生长及Pr3 离子的光谱性质。测定了该晶体的结构以及吸收光谱、荧光光谱和激发光谱。研究表明,该晶体有可能成为继Na5Nd(WO4)4晶体之后又一激光晶体新品种。
英国无线电工程师学会曾于1963年初在伦敦举行为期一天的微波与光激射器会议。会议主席为波托克(M. N. H. Potok)敎授。会上提出并讨论了六篇有关光激射器、两篇关于微波激射器的论文。
图像场景分类一直是计算机视觉领域的一个热点问题。提出了协方差描述子场景分类算法,它聚合了像素位置、颜色特征、方向特征和局部纹理特征等互补特征形成协方差描述子。为了避免计算黎曼空间内的协方差距离测度,把协方差描述子转换成欧式空间内的Sigma点特征,可以实现线性的场景描述和支持向量机训练。在SUN Database标准数据集上进行了算法分类测试,并与经典的场景分类算法进行了性能比较;通过构造包含噪声
An automatic visible spectrometer based on a non-collinear acousto-optic tunable filter (AOTF) is constructed for high-speed spectrometry. Its spectral filtering characteristics, such as relationships between the radio-frequency (RF) driving frequency and