空间扩展目标斑点成像的质量受到短曝光像中光子密度的限制。
The speckle imaging quality of space extended objects is limited by photon density in short exposure images.
分析有源区内载流子和VCL光子密度的变化，揭示了增益钳制的物理机理。
Analyzing the carrier density and photon density of VCL in active region, the physical mechanism of gain clamping was revealed.
利用速率方程理论，得到包含激光增益介质反转密度、光子密度和饱和吸收介质基态布居数密度的速率方程组。
Using rate equation theory, the equation group including the population inversion density of the gain medium, photon density and the absorber ground state population density is acquired.
频域近红外光谱系统利用一个高频正弦信号对光源进行调制，从而在大脑这类强散射介质中形成一种漫射光子密度波。
The frequency-domain NIRS instruments modulate the light with a RF sine wave, which generates diffuse photon density wave (DPDW) in turbid tissue like brain.
本文介绍了目前生物医学光子学领域内引人注目的新技术—扩散光子密度波技术的理论基础、 系统及国内外的最新进展。
The paper introduces the present knowledge of the theory and technology of diffusion photon density wave (DPDW) which have been focus of the recent research.
多库恰耶夫承认，这样的文明将不得不应对包括巨大潮汐力和因光子捕获产生的高能量密度在内的非常规条件。
Dokuchaev admits such a civilization would have to cope with extraordinary conditions including huge tidal forces and massive energy densities as photons become trapped.
研究了双光子非共振作用系统中纯度和密度算符间距的特性。
The time evolution properties of purity and distance between density operators in two photon non resonant interaction system are studied.
能流和态密度的计算结果都表示十二重准晶光子晶体具有光子带隙。
The simulation of total energy flow and the density of states show that the dodecagonal QPC has photonic gap for TM polarized electromagnetic waves.
得到了双光子吸收的荧光强度和入射光的能量密度平方成正比。
The fluorescence intensity of TPA was in direct ratio with square of incident energy consistency.
根据系统密度矩阵，讨论了系统熵随时间的演化和系统光子统计性质。
According to the system density matrix, discussed the evolution of the system entropy with time and photon statistical properties of the system.
研究了依赖强度耦合多光子J—C模型的演化算符，约化密度算符及其场熵特性。
The evolution opera tor, the reduce density operator and the dynamical properties of the field entropy evolution in the intensity - dependent coupling multiphoton J - C model are studied.
另外，还给出了光子晶体波导中的能流密度矢量图。
In addition, Poynting vector in photonic crystals waveguide is gained.
得到简并双光子过程中原子约化密度算符非对角元。
The non-opposite angle element of two-level atom's reducible density rectangular array is obtained.
通过原子上能级与光子频率带隙边缘的相对位置或者光子态密度，可以抑制或增强原子的自发辐射。
Spontaneous emission can be totally suppressed or strongly enhanced depending on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density.
利用康普顿散射光子能谱可以重建物质的电子密度图像。
Compton scattering can be utilized for electron density imaging.
理论上研究发现，通过引入含不同密度分布的发光分子可以探测到光子晶体的全态密度的部分细节甚至全部信息。
It is found, theoretically, that using different number density distributions of luminescent molecules within the PC, one can probe the partial information or even all of the total DOS in the PC.
光子带隙结构中的辐射场态密度(DOS)不同于自由真空场中的辐射场态密度。
Photonic band gap (PBG) structures have been shown to have a density of states (DOS) of emission field different from that of free-space vacuum field.
本文介绍了BH 6012二维扫描单光子骨密度仪的原理、仪器构成、优点和性能指标。
In this paper we discuss the Model BH6012 Two Dimensional Bone Densimeter. The principle, structure, virtue and performances of the instrument are presented.
从光的波粒二象性出发，分别根据光波的能量守恒定律及光子出现的概率密度与电场强度的平方成正比，推导出光吸收的朗伯定律。
From the wave-particle duality, we can deduce the Lambert law of light absorption according to the light waves energy and probability of photon.
方法应用强脉冲强脉冲光子脱毛方法，治疗113例患者计121个部位，对毛发的密度、色泽及硬度等进行随访。
Methods 113 patients (121 locations) underwent the treatment by IPL, with an interval about density, color and hardness of hair.
这种结构的光子晶体可以用来制作超窄带滤波器和多通道窄带滤波器，有望在光通信超密度波分复用技术和光学信息精密测量技术中获得广泛应用。
The concept of quasiperiodic one-dimension photonic crystal nanometer film is proposed, and research finds that it can be applied to realize optic narrowband filter.
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。
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.
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