粒子数差的英文

• population difference

• "粒子数"英文翻译    population
• "差"英文翻译    send on an errand; dispatch
• "零位粒子数差" 英文翻译 :    zero-order population difference
• "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
• "质子中子数差" 英文翻译 :    isotopic number
• "残留粒子数" 英文翻译 :    numbers of unremovable particle
• "反转粒子数" 英文翻译 :    inverted population
• "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
• "粒子数反转" 英文翻译 :    population inversion
• "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
• "粒子数悬布" 英文翻译 :    population hang-up
• "粒子数再增" 英文翻译 :    repopulation
• "粒子数增加" 英文翻译 :    populate
• "粒子数阈值" 英文翻译 :    population threshold
• "临界粒子数" 英文翻译 :    threshold population
• "能级粒子数" 英文翻译 :    energy level population
• "热粒子数" 英文翻译 :    thermal population
• "旋转粒子数" 英文翻译 :    rotational population

• In chapter 5 , we make numerical calculation , then analyze the properties of the population distribution , the gain , the coherence term and population difference , and validate the transient light amplification mechanism of this system
  第五章我们根据数值计算结果分析了粒子数分布、增益、相干项和粒子数差的瞬态演化过程，验证了系统产生增益的机制。
• In chapter 4 , we study nonlinear theory of the open v - type system with two - color incoherent pump . in this chapter , we discuss the conditions for the onset of lwi and the stability of the system in the limit of strong driving field , and the effect of incoherent pump rate rt on the gain , dispersion and population differences . we also discuss the effect of nonlinearities and the effect of pumping rate threshold of the pumping field
  接着第四章讨论双色非相干泵浦系统的非线性理论，分析了强驱动场情况下的lwi产生的条件和稳定性、非相干泵浦速率r ~ 1对增益、色散和粒子数差的影响；讨论了该系统的非线性效应和非线性对非相干泵浦速率r ~ 1与r阈值关系的影响。
• 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。
• In this paper , we study inversionless lasing of frequency up - conversion in an open v - type system with incoherent pump . making theoretical analysis and numerical calculation by density - matrix equations of motion , we derive the conditions for the onset of lwi and discuss the effects of the parameters of the system , the detuning of driving field and probe field on the gain , and discuss nonlinear effect in the frequency up - conversion regime . we also give stability and transient analysis
  本论文研究了具有非相干泵浦的开放v型系统频率上转换无粒子数反转激光，利用密度矩阵运动方程，通过理论分析和数值计算，得出该系统产生无粒子数反转激光的条件，讨论系统各参数的变化和驱动场与探测场的失谐对激光增益、色散和粒子数差的影响，还讨论了频率上转换区域的非线性效应，分析了增益的稳定性及系统的瞬态演化过程。
• On the basis of single mode superposition states , the squeezing and quantum statistical properties in the two - mode superposition states have been studied . the influences of the photon number , photon number difference , coefficients in the states and their relative phase on these non - classical properties have also been discussed . we have compared the results in the two - mode superposition states with those in the single - mode case
  在单模光子数叠加态的研究基础上，研究了双模光子数叠加态的压缩性质和量子统计性质，讨论了叠加态中粒子数、粒子数差、叠加态系数及叠加相位差对压缩性质及量子统计性质的影响，并将其结果与单模叠加态进行了比较。
• In chapter 2 , we analyzed the effect of the driving field phase fluctuation on the gain and dispersion and population differences in an open v - type three - level non - inversion lasing system and then discussed the effects of the incoherent pumping rate , the ratio of the atomic injection rates , the atomic exit rate , the rabi frequency of the probe and driving fields and their corresponding detuning on the gain , dispersion and population differences of the system , and got some important conclusions different from those in closed or other open systems
  第二章讨论了驱动场的相位涨落对开放的v型三能级无反转激光系统的影响，根据解析解的数值计算结果讨论了非相干泵浦速率、粒子注入速率之比、粒子退出速率、探测场和驱动场的rabi频率和相应失谐对系统增益、色散和粒子数差的影响，得到了一些不同于封闭的v型系统及其他开放的无反转激光系统的重要结论。