激光扫描检眼镜

来源 :激光与光电子学进展 | 被引量 : 0次 | 上传用户:nhekccxeadk
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
其他文献
We propose a scheme for generation of three-mode W-type entangled coherent states (ECSs) in free-travelling optical fields by using a single-photon source, coherent state sources, beam splitters, photodetectors, and three-mode cross-Kerr media. The scheme
利用传输矩阵法在红外波段实现了基于石墨烯-六方氮化硼(hBN)异质结构的古斯-汉欣(GH)位移的增强和调控。理论研究表明,由于hBN在红外波段产生洛伦兹共振现象,当使用波长为12.20 μm的横磁偏振光入射时,通过调节石墨烯的费米能级或石墨烯层数可以有效增强异质结构的GH位移量。当费米能级为0.2 eV时,仅使用单层石墨烯作用该异质结构即可达到80.97λ的GH位移量;此外,GH位移随hBN厚度的变化规律表现出与hBN介电常数相似的特征。当hBN厚度在1.53 μm附近变化时,可以实现-150λ~150λ
The circular-like sidewall and trench around the periphery of the crater are obtained on Zinc metal surface subjected to fewer than 200 cumulative pulses laser ablation. These patterns can be attributed to the higher secondary heating by regular plasma sp
A full-transparent zone plate (FTZP), which can reuse the wave blocked in the focusing of the Fresnel zone plate (FZP), is proposed to improve the efficiency of terahertz (THz) focusing without aberration. We find that the substrate thickness of the FTZP
通过对肿瘤细胞生长过程中的光谱变化进行研究,寻求反应其生长变化过程的光学检测方法。根据Beer-Lambert定律推知,在肿瘤细胞的生长变化过程中,细胞内的蛋白质、核酸等物质的浓度变化会导致其吸收光谱的强度变化。于是采用紫外可见光分光光度法对肿瘤细胞进行测量,获取细胞周期各个阶段细胞内部组成成分的光谱表现形式。在获取的紫外可见光光谱数据中,可以找到光谱特征峰值随细胞周期的变化规律。实验结果说明紫外可见光光谱方法能够检测到肿瘤细胞细胞周期变化过程中的细胞内特定分子的变化,为细胞周期的研究提供了新思路。
期刊
The so-called “phase difference” is commonly introduced as a phenomenological parameter in Raman tensor theory, so as to fit the experimental data well. Although phase difference is widely recognized as an intrinsic property of crystals, its physics still
Fiber nonlinearity limits the use of coherent optical orthogonal frequency division multiplexing (CO-OFDM) to upgrade wavelength-division multiplexing (WDM) systems using legacy non-return-to-zero-on-off-keying (NRZ-OOK) channels. This letter proposes to
We report electronic properties of a hydrogen atom encaged by an endohedral cavity under the influence of a weak plasma interaction. We implement a finite-difference approach to solve the Schr€odinger equation for a hydrogen atom embedded in an endohedral
期刊