far-field distribution meaning in English
远持布
Examples
- Working on laser diode fiber - coupling modules was summed up , they are , setting up the model of far - field distribution of laser array and the far - field characteristics of difference structures ; designing the temperature - controlled laser diode fiber modules , that has been used as a laser system with temperature - controlled and fiber - output ; realization with high - brightness laser diode fiber - coupling modules ; the fiber ' s application in the field of high power laser
总结了自己在光纤耦合输出激光二极管模块方面所做的一些工作，建立了半导体激光器列阵远场光束分布模型，并结合具体参数分析了不同结构的激光器列阵的光束远场分布特性，可以知道我们设计和优化激光器列阵的结构。设计并制作了光纤耦合模块的温度控制系统，并制作成温控光纤输出激光器半导体系统投入使用。 - On the other hand , the electric field and intensity distributions of the he11 mode in the hollow fiber are calculated by using the exact solutions of maxwell equations based on the vector model , and the diffracted near - and far - field distributions of the he11 - mode output beam under the fresnel approximation are studies . we derive an analytical expression on the far - field distribution of the he n - mode output beam in free space and discuss its applicable condition . we also analyze and compare the differences between the he11 - and lp01 - mode output beams , and find that the near - field distribution of the lpoi - mode output beam is a gaussian - like one , but the near - field distribution of the he11 - mode output beam is a doughnut - like one , whereas the far - field distribution of both the lp01 - and he11 - mode output beams are a doughnut one
此外，我们把中空光纤中lp _ ( 01 )模(标量模型)和he _ ( 11 )模(矢量模型)的场分布以及它们各自的输出光束的近场与远场分布进行了比较，发现两种模式的输出光束在近场分布有很大的区别， lp _ ( 01 )模输出光束在近场是一个高斯分布，而he _ ( 11 )模输出光束在近场是一个中空光束，在远场两种模式的输出光束分布是基本一致的，这正是由于在中空光纤中采用了弱波导近似以后所引起的误差。 - In addition , this paper has analyzed and calculated the wave - guide mode theory , got the quantum well laser photic - field distribution ' s fluctuation equation , deduced the far - field distribution ' s mathematics model by the method of stepwise approached , and simulated the near - field and far - field about the laser with computer software . we utilized a pair of mode expand layers which can restricted in photic - field to narrowed the far - field comer about quantum well laser material structure ( the corner was about 21 ?
另外本文还对光波导模式理论进行了理论分析和计算，得到了量子阱激光器光场分布的波动方程，利用逐步逼近的方法推导出了远场分布的数值模型，通过计算机软件模拟出了激光器远近场分布图，并利用模式扩展层对光场的限制作用得到了窄远场发散角(约为21 )的量子阱激光器材料结构。