four-level system造句
例句與造句
- Atomic coherence effects in four - level system
四能級系統(tǒng)中的原子相干效應 - 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
系統(tǒng)的模型特征是：三個電偶極躍遷構(gòu)成n型鏈的四能級系統(tǒng)，其中，中間躍遷為探測躍遷，兩邊的躍遷為耦合躍遷。 - 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
碩士學位論文master ’ st } iesis其次，本文研究在裸態(tài)下，考慮禍合場線寬對原子相干的作用，進一步揭示了禍合場線寬抑制電磁誘導吸收。這與禍合場線寬增強eit的吸收形成鮮明的對比。 - 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
本文主要做了兩方面的工作：一是在修飾態(tài)表象中揭示修飾態(tài)原子相干對吸收的相長干涉產(chǎn)生電磁誘導吸收，這與修飾態(tài)原子相干對吸收的相消干涉導致電磁誘導透明的情形形成鮮明的對照。二是在裸態(tài)中，引入耦合場的線寬，從而發(fā)現(xiàn)耦合場的線寬抑制電磁誘導吸收。首先研究電磁誘導吸收。 - 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
第二章分析了固體激光器的工作原理，以四能級系統(tǒng)為模型，應用速率方程理論研究了激光場與激光晶體之間相互作用理論，導出了固體激光器的閾值功率、輸出功率和斜效率等特性。 - It's difficult to find four-level system in a sentence. 用four-level system造句挺難的
- 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
分析了微擾能級的間隔和疊加程度、激光功率以及中間能級的失諧對量子干涉效應的影響，實驗上觀察了包含有一對微擾疊加中間能級的菱形四能級系統(tǒng)中的雙光子激發(fā)現(xiàn)象，發(fā)現(xiàn)微擾能級的相干疊加可增強雙光子吸收。 - 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:研究了四能級系統(tǒng)中基于五階極化的拍頻效應，考慮了抽運光束為窄帶線寬或?qū)拵Ь€寬的情形.發(fā)現(xiàn)其對能級分裂的測量精度決定于光學躍遷的均勻增寬.也就是說，這種技術(shù)在測量與基態(tài)是偶極禁戒躍遷的兩激發(fā)態(tài)之間的能級分裂時，可得到消除多普勒增寬的精度 - 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，在泵浦光的空間分布變量中我們分別考慮了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介質(zhì)中的位置以及泵浦光在介質(zhì)中發(fā)散角的影響；然后我們研究了在高泵浦功率下激光晶體因吸收泵浦光而產(chǎn)生的熱效應所導致的熱透鏡效應以及熱致衍射損耗，通過分析它們對振蕩激光腔模尺寸的影響，得到了高功率半導體激光二極管端面泵浦固體激光器模式匹配的要求，為高功率連續(xù)單頻nd ： yvo _ 4激光器的優(yōu)化設計提供了理論依據(jù)。