论文部分内容阅读
甲基吡啶衍生物液体中的双光子共振四波混频
【机 构】
：
北京理工大学应用物理系,北京100081
【出 处】
：
中国激光
【发表日期】
：
1991年18期
其他文献
提出了一种基于变分法和梯度增强的红外与可见光图像融合算法。首先对红外与可见光的梯度特征进行自适应加权融合,得到初始融合梯度场;其次构建梯度特征增强模型,获得融合图像增强的梯度场;最后通过变分法将融合问题转换为最优化问题,得到最接近增强后梯度场的融合图像。实验结果表明,相比基于多分辨率框架下进行融合的拉普拉斯分解、小波变换及常见的基于变分的融合算法,所提出的算法得到的融合图像梯度特征最大,视觉效果最
A novel construction method of QC-LDPC codes based on the subgroup of the finite field multiplicativ
According to the requirements of the increasing development for optical transmission systems, a novel construction method of quasi-cyclic low-density parity-check (QC-LDPC) codes based on the subgroup of the finite field multiplicative group is proposed.
期刊
Novel method for simultaneous measurement of film thickness and mass fraction of urea–water solution
Quantitative knowledge of the film thickness and mass fraction of the urea–water solution is very crucial in many practical applications. Film thickness or mass fraction can only be determined individually by conventional measurement techniques. We develo
Stimulated Raman scattering (SRS) excited by incoherent light is studied via particle-in-cell simulations. It is shown that a large bandwidth of incoherent light can reduce the growth of SRS and electron heating considerably in the linear stage. However,
从贝尔实验室的阿瑟士（A. Arthnz)首次演示激光悬浮以来的十年间，涉及这一课题的只有少量零星的实验报告。最近几篇文章是法国的奥赛光学研究所的罗森（G. Roosen)发表的,他继续研究并改进了用辐射压力使微粒稳定悬浮的技术。他正在从事光悬浮的一些应用研究，其中包括激光核聚变实验靶的无接触悬浮。现在纽约工学院和芒特西奈(Mount Siuai)医学院的研究者们，用辐射力悬浮微粒，观察到另一种不同的类似现象。这一技术将为应用广开门路。
期刊
Plasmonic gold nanoshell induced spectral effects and refractive index sensing properties of excessi
We demonstrate a fiber refractive index (RI) sensor based on an excessively tilted fiber grating (ExTFG) immobilized by large-size plasmonic gold nanoshells (GNSs). The GNSs are covalently linked on ExTFG surface. Experimental results demonstrate that bot