four-level system中文是什么意思

• 四水平系统

• "four"中文翻译    n. 1.四人小组；(套在车上的)四匹马。 2.四的记号 ...
• "level"中文翻译    n. 1.水平仪，水准仪；水准测量。 2.水平线，水平面 ...
• "system"中文翻译    n. 1.体系，系统；分类法；组织；设备，装置。 2.方 ...
• "four level system" 中文翻译 :    四能级系统
• "four-level laser system" 中文翻译 :    四能级系统
• "four-level" 中文翻译 :    四层的; 四能级
• "four decade-level condenser" 中文翻译 :    四级十进电容器
• "four level emitter" 中文翻译 :    四能级发射体
• "four level generator" 中文翻译 :    四级振荡器
• "four level laser" 中文翻译 :    四能级激光器
• "four level laser rod" 中文翻译 :    四能级激光棒
• "four level material" 中文翻译 :    四能级材料
• "four-level emitter" 中文翻译 :    四能级发射体; 四能级放射体
• "four-level fluoresent crystal" 中文翻译 :    四能级荧光晶体
• "four-level fluoresent solid" 中文翻译 :    四能级荧光固体
• "four-level generator" 中文翻译 :    四级振荡器; 四能级振荡器
• "four-level laser" 中文翻译 :    四能级激光器
• "four-level laser rod" 中文翻译 :    四能级激光棒
• "four-level laster" 中文翻译 :    四能级光激射器
• "four-level logic" 中文翻译 :    四级逻辑
• "four-level material" 中文翻译 :    四能级材料
• "four-level solid laser" 中文翻译 :    四能级固体激光器
• "four-level super crossroad" 中文翻译 :    四层立体交叉口
• "system level" 中文翻译 :    系统级的
• "four-high roller level-er" 中文翻译 :    四重式多辊矫直机

• Atomic coherence effects in four - level system
  四能级系统中的原子相干效应
• First , we study electromagnetically induced absorption . this significant feature of the system model is that a four - level system in which three - dipole transitions are in n configuration in this system , the middle transition serves as a probe transition and two other transitions serve as couple transitions
  系统的模型特征是：三个电偶极跃迁构成n型链的四能级系统，其中，中间跃迁为探测跃迁，两边的跃迁为耦合跃迁。
• 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 second chapter , the operating principle of solid - state laser is analyzed . based on the model of four - level system , the interacting theory between laser field and laser crystal is studied by the rate equation theory , then the characters , such as threshold power , output power , slope efficiency etc . , of solid - state laser are deduced
  第二章分析了固体激光器的工作原理，以四能级系统为模型，应用速率方程理论研究了激光场与激光晶体之间相互作用理论，导出了固体激光器的阈值功率、输出功率和斜效率等特性。
• We analyze the influences of the perturbed energy - level space and superposion , laser power and intermediate level offset on quantum interference . experimentally , in the sodium dimmer rhomb - type four - level system with a pair of perturbed levels , the interference enhancement of two - photon absorption caused by coherent superposition of the perturbed levels is experimentally observed
  分析了微扰能级的间隔和叠加程度、激光功率以及中间能级的失谐对量子干涉效应的影响，实验上观察了包含有一对微扰叠加中间能级的菱形四能级系统中的双光子激发现象，发现微扰能级的相干叠加可增强双光子吸收。
• Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization , and considered the cases that the pump beams have either narrowband or broadband linewidth . we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions . that is to say , this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
  文摘:研究了四能级系统中基于五阶极化的拍频效应，考虑了抽运光束为窄带线宽或宽带线宽的情形.发现其对能级分裂的测量精度决定于光学跃迁的均匀增宽.也就是说，这种技术在测量与基态是偶极禁戒跃迁的两激发态之间的能级分裂时，可得到消除多普勒增宽的精度
• Based on the rate - equation theory of four - level system , the expressions of threshold pump power , output power and slope efficiency are given . the influence of space distribution of pump light ( the position of focusing point , dimension of pumping light and divergence angle ) to the output characteristics are also discussed . then , by investigating the effects of thermal effect of laser crystal on the size of laser cavity mode , we obtain the mode - matching principle of high power laser diode end - pumped solid - state lasers
  其中，在泵浦光的空间分布变量中我们分别考虑了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介质中的位置以及泵浦光在介质中发散角的影响；然后我们研究了在高泵浦功率下激光晶体因吸收泵浦光而产生的热效应所导致的热透镜效应以及热致衍射损耗，通过分析它们对振荡激光腔模尺寸的影响，得到了高功率半导体激光二极管端面泵浦固体激光器模式匹配的要求，为高功率连续单频nd ： yvo _ 4激光器的优化设计提供了理论依据。

• four-level system перевод