The recent emerging field of synthetic dimension in photonics offers a variety of opportunities for manipulating different internal degrees of freedom of photons such as the spectrum of light. While nonlinear optical effects can be incorporated into these
A new generation of high power laser facilities will provide laser pulses with extremely high powers of 10 petawatt (PW) and even 100 PW, capable of reaching intensities of
本文报道Soda-lime玻璃的Ag -Na 和K -Na 离子交换波导的制备、特性分析;并介绍制作表面折射率元件(例如棱镜、透镜)的两次离子交换法,以及用卢瑟福后向散射谱分析玻璃离子交换后表面层的离子分布轮廓。
The generation and manipulation of optical vortices are of fundamental importance in a variety of promising applications. Here, we develop a nonlinear optical paradigm to implement self- and cross-convolution of optical vortex arrays, demonstrating the fe
美国“电子学工业”和“电子学”杂志报导，美国政府关于电子研究与发展的经费将比去年有所增加，伹其上升速率稍慢，或比1963年的水平稍低。
利用光学相干层析成像(OCT)获得视网膜图像并对其进行分层,进而获得各视网膜层的厚度,在许多眼科疾病的临床诊断中具有重要作用。高散斑噪声、低图像对比度、存在血管等复杂结构等因素使得对视网膜的精确分层难以实现。提出了一种视网膜OCT图像的自动分层方法,利用三维块匹配和均值滤波去噪对图像进行预处理,分两步对视网膜图像分层,在每个A扫描上设置可变阈值进行逐层分割作为初步分层结果,然后对各层的初步分层结果
Second-harmonic generation (SHG) microscopy is a recently developed nonlinear optical imaging modality for imaging tissue structures with submicron resolution and is a potent tool for visualizing pathological effects of diseases. In this letter, we presen
A microwave photonic notch filter with a complex coefficient is proposed and demonstrated based on four wave mixing (FWM). FWM effect of two single-frequency laser beams occurs in a highly nonlinear fiber (HNLF), and multi-wavelength optical signals are g
“一带一路”战略背景下城市会奖旅游核心竞争力分析 ——以云南省昆明市为例
