We propose a novel pressure sensor based on the combination of the ring resonator with two straight waveguides and a two-end fixed beam. The principle of this device is acquiring the system static pressure by monitoring the changes in the transmission wav
针对变光照环境下给皮带撕裂视觉检测过程造成的识别干扰, 提出了一种基于洛伦兹信息测度(Lorentz Information Measure, LIM)分块的改进Ostu分割算法的结构光视觉检测方法。首先将红色线性激光投射到皮带表面, 通过CCD相机捕获高对比度图像; 然后利用LIM方法将ROI(Region of Interesting)区域根据其水平方向光照强度分块, 并逐块通过线性加权Ostu算法进行图像分割, 进而合并出整幅图像的激光条纹; 最后提取激光条纹中心线, 并对其信息特征进行分析比较,
最近已证明光辐射疗法（PBT)成为普通激光外科手术之外的另一种有效途径。PBT由红色染料激光和牛血中的萃取物即血卟啉衍生物（HpD)共同起作用。在使用光纤内窥镜的情况下，癌细胞被激光与注射入的HpD之间的独特光化学反应所破坏。
In this Letter, we propose an optical attenuator based on the phase modulation of a spatial light modulator (SLM). In this system, we use two polarized beam splitters (PBSs) to control the polarized light and one SLM to modulate the phase of the polarized
To measure the global atmospheric three-dimensional distribution and change of temperature and humidity is one of the key areas in atmospheric remote sensing detection; it is also a new research and development direction in the field of meteorological sat
With its unique and exclusive linear and nonlinear optical characteristics, epsilon-near-zero (ENZ) photonics has drawn a tremendous amount of attention in the recent decade in the fields of nanophotonics, nonlinear optics, plasmonics, light-matter intera
本文把Lamb激光量子理论用于处理三模激光,文中运用密度算符理论和微扰方法,获得了四能级均匀展宽原子系统中三模激光运转的主方程,并画出了几率流图。合理地考虑细致平衡原理,进而得到了定态运动方程。并就不同条件下运转情况、量子统计性质等进行了讨论。尤其对光子数分布进行了数值计算,得到了详细结果,并进行了比较。此外,考虑场密度算符的非对角元运动方程,求得激光线宽表达式,并就单模、双模和三模运转的情况进行了比较。
提出一种基于深度对抗域适应的高分辨率遥感影像跨域分类方法。利用深度卷积神经网络VGG16(Visual Geometry Group)学习场景影像的深度特征,然后利用对抗学习方法最小化源域和目标域特征分布差异。利用RSI-CB256(Remote Sensing Image Classification Benchmark)、NWPU-RESISC45(Northwestern Polytechn