粒子数反转的英文

• population inversion

• "粒子数"英文翻译    population
• "反转"英文翻译    counter revolution; back-dra ...
• "粒子数反转区" 英文翻译 :    area of popular inversion; popular inversion area
• "初始粒子数反转" 英文翻译 :    initial population inversion
• "粒子数反转寿命" 英文翻译 :    population inversion lifetime
• "起始粒子数反转" 英文翻译 :    initial population
• "阈值粒子数反转" 英文翻译 :    threshold population inversion
• "临界粒子数反转密度" 英文翻译 :    threshold population inversion density
• "阈值粒子数反转密度" 英文翻译 :    threshold population inversion density
• "反转粒子数" 英文翻译 :    inverted population
• "反转粒子数饱和" 英文翻译 :    saturation of the population inversion
• "反转粒子数密度" 英文翻译 :    inverted population density
• "粒子数布居反转" 英文翻译 :    population inversion
• "粒子数" 英文翻译 :    population◇粒子数反转 inversion of the population ratio; population inversion (粒子数布居反转); 粒子数密度 population density; 粒子数守恒方程 particle-conservation equation;粒子数增加 populate
• "残留粒子数" 英文翻译 :    numbers of unremovable particle
• "过剩粒子数" 英文翻译 :    excess population
• "基态粒子数" 英文翻译 :    ground state population
• "粒子数比" 英文翻译 :    population ratio; ratio of number of particles
• "粒子数测量" 英文翻译 :    population measurement
• "粒子数差" 英文翻译 :    population difference
• "粒子数分布" 英文翻译 :    population distribution
• "粒子数分数" 英文翻译 :    fraction of number of particles
• "粒子数密度" 英文翻译 :    population density
• "粒子数守恒" 英文翻译 :    conservation of particle number
• "粒子数寿命" 英文翻译 :    population lifetime

• The necessary population inversion can be achieved in a variety of ways .
  我们可以用各种方法来实现这种必要的粒子数反转。
• Area of popular inversion
  粒子数反转区
• In chapter 6 , a summary is presented to sum up the main properties of lwi of this system
  第六章是结论，总结该系统的无粒子数反转激光的主要特点。
• In chapter 1 , we first present the significance and the principle of lwi , then introduce the research content and the progress that have been made in this field
  第一章为综述，介绍无粒子数反转激光理论研究的意义、无粒子数反转激光产生的基本原理、研究现状及研究内容。
• In the first part , the paper mainly discourse upon the gestation course of theoretic base in laser physics , stimulated emission , population inversion and other basic theory of laser were discussed
  第一部分主要论述了激光物理理论背景的酝酿过程，对受激辐射、负吸收、粒子数反转这几个激光物理的基本理论的建立过程作了研究和分析。
• This paper consists of four chapters . in chapter 1 , we explained the significance for studying lwi and the basic principle of producing lwi , introduced simply the current research state and the main contents for the important study subject at present
  本论文共分四章：第一章为综述，阐述了无粒子数反转激光的研究意义及其产生的基本原理，并简单介绍了当前这一重要课题的研究现状和研究内容。
• The study of lasing without inversion ( lwi ) is an important and active research front field in international lasing physics nowadays . the study of lwi has not only an important theoretical value , but also wide application prospects
  无粒子数反转激光( lasingwithoutinversion简称lwi )的研究是当前国际上激光物理重要而活跃的研究前沿领域之一，无粒子数反转激光的研究不仅具有重要的理论价值，而且具有广阔的应用前景。
• The study of lasing without inversion ( lwi ) is one of the most important and the most active research field of lasing physics internationally nowadays . there are not only important theoretic value but also wide applied prospect in the study of lwi
  无粒子数反转激光（ lasingwithoutinversion简称lwi ）的研究是当前国际上激光物理最重要、最活跃的研究前沿领域之一， lwi的研究不仅有重要的理论价值而且有广阔的应用前景。
• We study the time evolution law of the atomic response in an open - type inversionless lasing system when the probe or driving field is off - resonance , and compare the law with that obtained when the probe and driving fields are resonant . we find that the detuning has considerable effects on the time evolution law : when the probe or driving fields is off - resonance , the dispersive responses for the probe and driving fields are no longer 0 and the two - photon coherence is no longer a pure real ; the variation of the probe detuning can make the time evolution law of the population distributions and the gain ( absorbtion ) of the driving field changing obviously ; with detuning increasing , the time evolution behavior of the gain ( absorbtion ) , dispersion of the probe field and the two - photon coherence will gradually diviate from the evolution law of the standard damped oscillator ; with the driving detuning increasing , the oscillating time of the dispersion of the driving field becomes longer , the amplitude and the stationary value increase
  研究了探测场或驱动场失谐情况下开放的型无粒子数反转激光系统中原子响应的时间演化规律,并与探测场和驱动场都共振时的演化规律进行了比较.我们发现失谐对时间演化规律有显著的影响;当驱动场或探测场失谐时,原子对探测场和驱动场色散的响应不再为零,双光子相干不再是纯实量;探测场失谐的变化将使粒子布居和驱动场增益(吸收)的时间演化规律明显改变;随着失谐的增大,探测场增益(吸收) 、色散和双光子相干随时间的演化行为逐渐偏离标准阻尼振子的演化规律;驱动场色散驱动场失谐量的增加而振荡时间变长,振幅和稳定值变大
• In section one , we analyze the mechanism of lwi gain , and study the effects of the rabi frequency q of the driving field , the injection rates ratio rb / r ~ , the exit rate r0 , the decay rates ~ and rab between atomic levels , as well as 3 incoherent pump rate r on the gain without inversion , dispersion and population difference of the system . in section two , we discuss the effects of the detuning of the driving field and the probe field on the gain
  在第一节中分析了无粒子数反转激光增益产生的机制、研究了驱动场的rabi频率、粒子注入速率比值r _ b / r _ c 、粒子退出速率r _ o 、能级间的自发衰减速率r _ ( c - b ) 、 r _ ( a - b )和非相干泵浦速率r对增益、色散和粒子数差的影响；第二节讨论了驱动场和探测场的失谐对无粒子数反转激光增益的影响。