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光学技术2018年第44卷 总目录
【出 处】
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光学技术
【发表日期】
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2018年44期
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We propose and demonstrate a novel scheme of semi-open-loop polarization control (SOL-PC), which controls the state of polarization (SOP) with high accuracy and uniform high speed. For any desired SOP, we first adjust the initial SOP using open-loop contr
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介绍了红外系统的光学特性,从理论和实验上验证了激光辐照典型红外系统产生的回射激光。通过实验测量了红外系统内光学元件产生回射激光的效率、光斑尺寸,分析了对回射激光光斑的识别。研究结果对充分利用回射激光,开展激光对红外系统的主动跟踪、识别闭环具有一定的实际意义.
Recent advances of space-time-coding digital metasurfaces demonstrate powerful capabilities in the generation of nonlinear harmonics and the accurate control of the corresponding wavefronts. However, to date the near field manipulation and the experiment
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The optimized optical phase conjugation (OPC) configuration is proposed for the 40-Gb/s CO-OFDM system. The proposed configuration for nonlinear cancellation is systematically depicted in transmission links with lumped amplification. Numerical simulations
Transmission of photonic polarization states through 55-m water: towards air-to-sea quantum communic
Quantum communication has been rapidly developed due to its unconditional security and successfully implemented through optical fibers and free-space air in experiments. To build a complete quantum communication network involving satellites in space and s
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从解决陶瓷齿轮加工困难的实际应用需求出发,系统研究1064 nm皮秒激光的输出功率、扫描速度、扫描次数、扫描线间距等工艺参数对陶瓷切削深度、宽度和表面粗糙度的影响;结合齿轮结构的几何特征,采用将柱状工件的曲面加工转换成平面加工的方法,完成了不同齿形(直齿、斜齿)陶瓷齿轮的激光直接高精制造,齿面平均粗糙度Ra≤2 μm,加工效率高,可适用于不同材质齿轮类复杂构型零件的加工。
度规光学中的聚焦定理被导出。给出了光束的聚焦、散焦和陷的条件。讨论和分析了在静态轴对称介质中的应用。