The weak-signal gain of laser comes from two elementary processes:two-photon process and two-step process.
并指出，激光的弱讯号增益来源于两个基本过程：两个光子过程和两步过程。
Our results show that the laser gain comes from two basic processes, i. e., a two-photon process and a two-step process.
本文的结果表明，激光增益来源于两个基本过程：两个光子过程和两步过程。
The emission spectrum for a pair of dipole dipole coupled identical two level atoms interacting with three mode cavity fields resonantly through 6 photon process has been studied.
研究了两个偶极偶极力关联的等同双能级原子与三模腔场六光子共振相互作用的辐射谱。
This paper introduces thought and process which are wide-band amplifier design in photon counter system. The detail circuit is given.
本文介绍光子计数系统中宽带放大电路的设计思想和设计过程，给出了具体设计电路。
The proportion between the thermalization process and diffusion process possess in all the decay process is determined by photon energy of excitation.
载流子的热弛豫过程与扩散过程在整个衰减过程中所占的比例，取决于激发光子的能量。
A statistical method has been developed to process photon image by accumulated limited photon images.
讨论了一种对有限光子图像累加的统计处理方法。
The process begins when a blue photon hits a blue- absorbing pigment and energizes one of the electrons in the molecule .
当一个蓝色光子击中吸收蓝光的色素，提供能量给色素分子中的一个电子，整个过程随之启动。
A photon counting image model based on avalanche photodiode (APD) arrays response characters and Poisson point process of photons was developed.
简要介绍了雪崩光电二极管(APD)阵列光子计数成像原理，建立了基于泊松点过程的APD阵列的单光子响应模型。
How is photon converted to electric signals? How does the retina extract information about form, color and motion? How does the brain process visual information?
光子怎样被转化成电信号？视网膜如何提取物体的形状、颜色和运动特征？大脑又是如何对视觉信息进行处理的？
We also study the photon statistic properties of thermal radiation field in the process.
着重分析了热态光场在此作用过程中所展现出的光子统计特性。
In single photon emission computed tomography (SPECT), accurately modeling of the physics of SPECT imaging process is essential to degrading factor compensation and image quality enhancement.
在单光子发射断层成像(SPECT)中，为了校正劣化因素的影响，提高图像质量，需要对SPECT成像的物理过程进行准确建模。
It is shown that the three photon ionization will be a limiting process in third-harmonic generation.
指出三光子离化过程使三次谐波转换效率降低。
In laser clinical applications, the process of photon absorption and thermal energy diffusion in the target tissue and its surrounding tissue during laser irradiation are crucial.
在激光临床医学应用中，激光辐照过程中在目标组织及其周围组织内的光子吸收和热能传播过程十分关键。
A statistical method has been developed to process thin samples photon image.
讨论了一种对小样本光子图像的统计处理方法。
The actual signal-to-noise ratio criterion of photon correlation spectrum, its building-up process and its shortages were summarized.
概述了现行的光子相关谱信噪比判据、建立过程及其不足。
It can be find that average photon number of thermal radiation field and multi-photon transition process have intense influence on the non-classical properties.
可以看出热态光场的平均光子数和多光子跃迁对光场非经典性质有强烈的影响。
Owing to the important role of single photon in quantum information process, the technique of generating single photon is developing.
由于单光子在量子信息科学中的重要作用，人们一直在探索实验制备单光子的技术。
The time characters of the photon action process determine the quality of the silver halide material to a great degree.
光作用过程的时间特性在很大程度上决定了卤化银材料性能的优劣。
The concept of radiation effects of detention was explained and photon produce process of low-pressure mercury was uras analyzed, from the perspestive of atomic energy level transition.
从原子能级跃迁的角度，分析了低压汞灯的光子的产生过程，说明了辐射禁锢效应的概念。
This paper discusses the process of resonant laser ablation (RLA), where the two step three photon resonant ionization of copper is considered as the best scheme.
本文研究了适合于共振激光消融质谱的铜原子的二步三光子共振电离过程。
In this paper, the two-photon autoionization involving second-order ionization process under strong laser field is investigated.
本文研究了包括二阶离化过程的强激光场下的双光子自电离。
And the decay rate of these deviations depends on not only the carrier lifetime but also the photon lifetime, which is different from that of an ordinary diode laser experiencing turn-on process.
该衰减率不仅与载流子寿命有关，还和光子寿命有关，这一点与普通半导体激光器“接通”时的动态行为有所区别。
We theoretically analyzed the effect of both pump and detection bandwidth to the distribution range of photon pairs generated by SPDC process.
分析了泵浦光的谱宽以及测量所选用的滤波器的带宽对下转换产生的信号光和闲置光分布范围影响。
To model the photon transport process more accurately, a generalized free-space photon transport model is proposed.
为了更精确地漫射光在自由空间中的传输过程，我们提出一种通用的自由空间漫射光传输模型。
We first analytically demonstrate that the four-wave mixing process in our system is equivalent to a two-photon absorption process and single photons will be obtained at the out-put.
我们首先在耗散表象下，证明了我们方案中的四波混频过程可以等效为一个双光子吸收过程，并得到了单光子输出的解析表达式。
The photon-excitation coefficient S is important in the process of photorefraction.
在光折变过程中，光波对掺杂中心的激发系数S是一个重要的物理量。
The laser facula area has some effects on the ion yield of multi photon ionization process.
研究了在激光脉冲能量和激光脉冲宽度一定时激光光斑面积对多光子电离离子产量的影响。
Taking anthracene-porphyrin-anthracene triads as example, we found that the intra-molecular charge transfer process can largely enhance the three-photon absorption cross-section.
以蒽-卟啉-蒽分子为例，从激发态之间的跃迁密度分析发现，分子内电荷转移过程可以极大地增强三光子吸收。
Taking anthracene-porphyrin-anthracene triads as example, we found that the intra-molecular charge transfer process can largely enhance the three-photon absorption cross-section.
以蒽-卟啉-蒽分子为例，从激发态之间的跃迁密度分析发现，分子内电荷转移过程可以极大地增强三光子吸收。
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