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光电工程2018年第45卷第4期 目录
【出 处】
：
光电工程
【发表日期】
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2018年45期
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Diffractive Multi-beam Ultra-fast Laser Micro-processing Using a Spatial Light Modulator(Invited Pap
反射强度信息是机载激光雷达(Li DAR)系统所获取数据的重要组成部分,利用反射强度信息提取道路点云的主要难点在于道路点云通常包含在地面点云中,而区分道路点云与非道路点云的反射强度阈值较难获取。针对该问题,提出了基于偏度平衡的道路点云提取算法,该算法可以自动、准确、无参地确定反射强度阈值,进而获取纯净的道路点云。分别采取位于我国山西省某地和德国某城市的两组Li DAR点云数据来检验该算法在不同地理
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Design and realization of random measurement scheme for compressed sensing (CS) are presented in this paper, and lower limits of the measurement number are achieved when the precise reconstruction is realized. Four kinds of random measurement matrices are
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The realization of robust coherent energy transfer with a long range from a donor to an acceptor has many important applications in the field of quantum optics. However, it is hard to be realized using conventional schemes. Here, we demonstrate theoretica
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The advantages of using nonlinear optical loop mirror (NOLM) to compress pulse with slight amplitude fluctuation and reflected energy loss are analyzed in theory. Experimentally the NOLM is placed in an actively mode-locked erbium-doped fiber ring laser t
设计了一种性能稳定、结构紧凑的光泵浦腔内倍频488 nm半导体薄片激光器。为获得光束质量好、输出性能稳定的488 nm激光器, 利用808 nm LD从顶面垂直泵浦半导体增益介质芯片获得976 nm基频光, 通过在腔内置入I类相位匹配的LBO晶体进行倍频获得488 nm激光输出。半导体增益介质芯片具有13量子阱和808 nm/976 nm双反射带反射镜, 其双面键合金刚石散热片。在泵浦功率为9.2 W时, 获得111 mW 488 nm激光输出, 光谱线宽为1.3 nm, 光-光效率为1.2 %, 光束质