论文部分内容阅读
非自持放电激发的D2-CO2-Ar激光混合气体的研究
【出 处】
:
激光与光电子学进展
【发表日期】
:
1990年27期
其他文献
长余辉材料作为一种特殊的光致发光节能材料,在显示、生物医学、能源及环境工程等领域有着广泛的应用。以Sr2MgSi2O7为代表的硅酸盐材料具有耐水性强、化学稳定性好、余辉时间长等优点,是一类极具潜力的长余辉材料。但余辉发光强度不足、发射带窄以及余辉机理不明确等缺点限制了其进一步商业化应用。全面回顾了Sr2MgSi2O7∶Eu2+,Dy3+<
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
In present work, we demonstrate that when a transverse magnetic (TM) Gaussian beam is incident to a magnetic metamaterial (MM) slab, it can be completely absorbed at a particular direction, resulting in a unidirectional perfect absorption. The unidirectio
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
期刊
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
期刊
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。