Opc is considered to be useful in two ways : first it enables smaller features with closer proximities to be printed on the same area ; second , it increases the process latitude , decreases the variations of linewidth across a chip and could potentially enhance yield Opc是非常有用的,一方面使用opc ,能在相同的面积上加工出更小的特征线宽;另一方面,使用opc提高了工艺窗口,降低了整个芯片特征尺寸的变化,潜在地提高了集成电路的生产成品率。
Next we consider the effect of the coupling field linewidth to electromagnetically induced absorption , by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition , we find that coupling field linewidth inhibits electromagnetically induced absorption 硕士学位论文master ’ st } iesis其次,本文研究在裸态下,考虑祸合场线宽对原子相干的作用,进一步揭示了祸合场线宽抑制电磁诱导吸收。这与祸合场线宽增强eit的吸收形成鲜明的对比。
In this paper we have done two work , one is we , in the dressed states representation , reveal that the constructive interference of atomic coherence on absorption leads to electromagnetically induced absorption , which is in sharp contrast to the case in which destructive interference of atomic coherence gives rise to electromagnetically induced transparency and the other is we reveal that coupling field linewidth inhibits electromagnetically induced absorption , by employing a four - level system in which three transitions are in n configuration and the middle transition serves as a probe transition 本文主要做了两方面的工作:一是在修饰态表象中揭示修饰态原子相干对吸收的相长干涉产生电磁诱导吸收,这与修饰态原子相干对吸收的相消干涉导致电磁诱导透明的情形形成鲜明的对照。二是在裸态中,引入耦合场的线宽,从而发现耦合场的线宽抑制电磁诱导吸收。首先研究电磁诱导吸收。
In the sectionl , we introduced the development of opo and the correlative nonlinear optical ( nlo ) crystal , summarized the background and the recent advance of the clbo and linewidth of opo ; in the section2 , we have studied and stimulated linewidth of parametric light of clbo optical parametric oscillators pumped by 355nm by computer 第一章介绍了光参量激光器及相关非线性晶体的发展状况,综述了clbo晶体和opo线宽的研究背景及其研究进展情况;第二章以355nm作为泵浦光,对影响clbo晶体光参量振荡器线宽的各种物理机制进行了数值模拟计算、分析。
However , as optical parametric oscillators are mainly used in the research area of spectroscopy etc , and the applications of spectroscopy have a high demand for the resolution of the lasers , namely beam linewidth , ours practical study of bbo - opo mainly take the efforts for seeking the theoretical support of the decreasing linewidth and improving the beam quality of output , and practical experimental methods as well as increasing the conversation of the parametric beams , and providing convenient tuning systems for the opo applications 然而,由于opo主要应用于光谱学研究等领域,而光谱学的应用对激光的分辨率即线宽和光束质量要求较高,因此本文的bbo - opo实用化研究在努力提高参量光的转换效率的同时,主要致力于寻求压缩线宽和提高光束质量的理论依据和实用化的实验手段以及为opo的应用提供便捷的调谐系统。