2021-01ml 目录

来源 :强激光与粒子束 | 被引量 : 0次 | 上传用户:noonbird
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为定量评价摄像机与景物高速相向运动中造成的图像辐射状模糊的退化程度, 以及科学地评价相关复原算法的有效性, 针对径向模糊度函数和基于图像结构信息的图像质量评价方法进行了研究。文章通过建立径向模糊度函数, 对不同场景图像的模糊度进行了定量描述, 得出该函数在描述该问题时具有一定不稳定性的结论。从辐射状模糊机理和人眼的视觉特性出发, 提出了可在无标准参考图像情况下, 用于评价辐射状模糊图像复原效果的基于图像结构信息的质量评价方法; 并运用该方法证明了正则化迭代法在复原辐射状模糊图像时表现了很好的容错性, 在工
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We report a design for one nanometer X-ray focusing by a complex refractive lens, which is capable of focusing 20 keV X-rays down to a lateral size of 0.92 nm (full-width at half-maximum (FWHM)) and an axial size of 98 nm (FWHM) with intensity gain of 490
采用一种新的光纤倍频两步激光预处理方法处理掺Er3 石英光纤,并获得8.8%的峰值倍频转换效率。测定了掺Er3 光纤的有效倍频长度,探讨了掺Er3 光纤产生高转换效率倍频光的物理过程。倍频光的脉宽是基频光波的0.7倍和短光纤中倍频光峰值功率随泵浦激光峰值功率平方变化的实验结果表明,倍频光是通过二阶非线性过程产生的。
在基于3-5阶非线性的Ginzburg-Landau方程的二维耗散系统中,引入反波导型结构的V型折射率调制,研究发现耗散光孤子一些奇特的非线性动力学现象:合适的折射率调制,耗散孤子会连续不断地向两边分裂出同样的耗散孤子,并且分裂的频率随着调制强度的增大而加快;折射率调制比较较弱时,耗散孤子被拉伸成椭圆形;而太强的调制强度会导致耗散孤子崩溃。系统分析了耗散系统中粘滞系数,以及增益和损耗系数对这些非线性动力学现象的影响,发现必须要足够的能量增益才能维持中心孤子进行连续分裂。
Optoelectronic components and subsystems such as optically controlled phased array antennas, distributed radar networks, interferometric optical fiber hydrophones, and high-speed optoelectronic chips demand high-accuracy optical time delay measurement wit
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Concurrent chemoradiotherapy (CCRT) is the choice of treatment for locally advanced cervical cancers; however, tumors exhibit diverse response to treatment. Early prediction of tumor response leads to individualizing treatment regimen. Response evaluation
We examine the spin-orbit interaction of light and photonic spin Hall effect on the surface of anisotropic two-dimensional atomic crystals. As an example, the photonic spin Hall effect on the surface of black phosphorus is investigated. The photonic spin
We present a novel system for parameter design and optimization of modulated lidar. The system is realized by combining software simulation with hardware circuit. This method is more reliable and flexible for lidar parameter optimization compared with the