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有效反射率
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  effective reflectance
     Its principle is discussed, taking the divergent optical beam emitted from the fiber into consideration, which causes a loss factor for the effective reflectance.
     考虑到光纤出射光束的发散 ,在有效反射率中引入了损耗因子 ,讨论了它的基本工作原理。
短句来源
     Effective reflectance R e was introduced to optimize the coating design by minimizing R e.Coupling ARC with window layer was taken into consideration.
     引入了有效反射率 Re,并通过使 Re 极小来实现减反射膜的优化设计 ,考虑了 Mg F2 / Zn S双层减反射膜与窗口层的耦合。
短句来源
  effective reflectivity
     By using the facet effective reflectivity method and the coupling wave theory, the tuning range of the phase tuning EML is about 3.2 nm from calculation.
     采用端面有效反射率方法和耦合波理论的计算表明:采用相调制方法,可实现调谐范围达3 2nm的EML。
短句来源
     Using the effective reflectivity method and the theory of single FP (Fabry Perot) cavity laser,the problem of mode spectrum of GaAs/GaAlAs inte- grated external cavity laser,with the aid of computer numeric calculations and drawing,has been solved simply,and then the experiment scheme is given.
     本文利用单 FP(Fabry—Perot)腔激光器的理论,并用有效反射率方法,通过计算机数值计算和作图,简单、清晰、明了地解决了集成外腔结构的 GaAs/GaAlAs激光器的模式谱问题,并给出了实验设计方案。
短句来源
     The principle of the technique is: 1.measurements of effective tra-nsmissivity 2.measurements of effective reflectivity 3.based on relations to solve for Kλ by an iterative method.
     2.测定透明薄膜的有效反射率ρ_λ~*; 3.利用τ_λ~*=τ_λ~*[ρ_λ,τ_λ=exp(-K_λd)]和ρ_λ~*=ρ_λ~*[ρ_λ,τ_λ=exp(-K_λd)]进行迭代求解,算出K_λ。
短句来源
     In this paper, the equation of effective transmissivity τ and effective reflectivity ρ of the glass tube for a vacuum collector tube with heat pipe normally irradiated by para-lell lights were derived theoretically.
     本文对平行光垂直入射热管式真空集热管时玻璃管的有效透过率τ~*及有效反射率ρ~*进行了理论研究,得到了计算公式,并编制了计算机程序。
短句来源
     Extracting effective reflectivity at AR coated diode facets using graphical analysis method
     图形分析法求半导体激光器端面减反膜的有效反射率
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  “有效反射率”译为未确定词的双语例句
     Effective facet reflectivity incorporating couple wave theory is adopted to calculate wavelength shift of electroabsorption modulated DFB laser (EML) with different facet reflectivity,facet phase and coupling strength,κL.
     采用端面有效反射率法 ,从理论上计算了单片集成电吸收调制 DFB激光器 (Electroabsorption ModulatedDFB L aser,EML)的腔面反射率、耦合强度 (κL)对其波长漂移的影响 .
短句来源
     the effectual reflectance differences and the effectual color combinations that discern and distinguish the targets on the photographs are determined;
     确定在象片上识别与区分目标的有效反射率(差)和有效颜色组合;
短句来源
     In this paper, using the method of interrelative researches (tests) , the information reproduction rules of the targets on infrared colour aerial photographs are analyzed, and the effectual reflectance differences as well as the effectual colour combinations that discern and distinguish the targets on the photographs are determined.
     本文以相关研究(试验)的方法,分析目标在红外彩色航空像片上的信息再现规律。 确定在像片上识别与区分目标的有效反射率(差)和有效颜色组合。
短句来源
     Abstract Simulation and experimental results of the asymmetrical three-section composite-cavity InGaAsP/Inp semiconductior laser are reported. The mode-selectionproperty of this laser is explained in terms of the wavelength-dependent effectivereflectance. A better mode-selection property with a larger sub -mode suppressionratio can be obtained to select L1, L3 and n2 appropriately.
     本文分析了三段非对称复合腔InGaAsP/InP半导体激光器的选模特性,给出了有效反射率随波长周期性变化的计算机模拟结果和采用质子轰击新工艺制作的三段非对称复合腔激光器的实验结果.结果表明,选择合适的腔长L1、L3和有效折射率n2能获得大的边模抑制比。
短句来源
     The results show,if the spectral width of reflective curve of the antireflective film is finite,the reflectivity is generally greater than the minimum of reflectivity curve.
     研究表明:在减反膜的反射率曲线的谱线宽度有限的情况之下,LD镀膜面上的有效反射率Reff一般均高于反射率曲线的最小值Rmin;
短句来源
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  effective reflectance
A high photogeneration of 38?mA/cm2 from a film of thickness Wf=4?μm is possible due to a detached Al-back surface reflector that has an effective reflectance of 99.7% at 1250?nm.
      
The mode-selection property of this laser is explained in terms of the wavelength-dependent effective reflectance.
      
The effective reflectance has periodic variations with wavelength, the period being determined by the dimensions of the cavity.
      
The modulation in the effective reflectance in symmetrical three-section structure lasers is about twice that in two-section structure lasers.
      
As mentioned earlier, changes in the effective reflectance affect the laser's performance.
      
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  effective reflectivity
The effective reflectivity was determined for various orientations of the quarter waveplate in the gain arm to numerically estimate the Q-switched laser pulse parameters through rate equation analysis.
      
Radiative transfer theory is used to calculate the incoherent effective reflectivity (Γe) for a multilayer lossy dielectric medium backed by a conducting plate.
      
As can be seen from this figure, there is some wavelength dependency on the effective reflectivity.
      
If combined with the effective reflectivity and the solar flux, the acceleration provided can then be calculated.
      
In many cases, the numbers of particles, composition and shape are not known and an equivalent or effective reflectivity factor Ze is defined.
      
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In this paper,we analyse the longitudinal mode threshold gain affected by the dis-continuity of the waveguide in a composite-cavity semiconductor laser diode. The effe-ctive reflectance R_(aff) and the threshold gain have a certain distribution with waveleng-th caused by the interferometric effect in the composite cavity.Some mode hopping be-tween the neighboring modes can be suppressed when the gain peak moves with tempe-rature,which enlarges the temperature range of the stable single longitudinalmode oscil-lation...

In this paper,we analyse the longitudinal mode threshold gain affected by the dis-continuity of the waveguide in a composite-cavity semiconductor laser diode. The effe-ctive reflectance R_(aff) and the threshold gain have a certain distribution with waveleng-th caused by the interferometric effect in the composite cavity.Some mode hopping be-tween the neighboring modes can be suppressed when the gain peak moves with tempe-rature,which enlarges the temperature range of the stable single longitudinalmode oscil-lation in a composite-cavity laser.This effect has been observed in Sectional Constrict-ed Planar Co-cavity Striped Semiconductor Lasers (SCP) fabricated in our laboratory.The wavelength-locking over a temperature interval of 4℃ is achieved, within which thewavelength changes at a rate of 0.6 A/℃ in 21-25℃ and 0.2 A/℃ in 35-39℃, respe-ctively.

本文分析了复合腔半导体激光器波导的非连续性对纵模阈值增益的影响.复合腔对传输光模的干涉效应使有效反射率R_(eff)~2和激光器的阈值增益随波长有一定的分布,当温度变化增益峰移动时,一些邻近模式间的跃变被抑止,这就增加了激光器以稳定的单纵模输出的温度范围.在我们研制的分段压缩-平面复合腔激光器(SCP)中初步观察到了这一效应.纵模温度锁定的范围为 4℃.在这一温度区间,激射波长随温度的变化率分别为 0.6A /℃(21-25℃)和0.2A/℃(35—39℃).

By using the method of interrelative researches (tests), the information reproduction laws of the targets on the infrared color aerial photographs are analysed; the effectual reflectance differences and the effectual color combinations that discern and distinguish the targets on the photographs are determined; the effectual ways that forecast and enhance infrared color informations of the targets are probed; finally, a referevce model that employs this remote sensing means is given.

本文以相关研究(试验)的方法,分析目标在红外彩色航空象片上的信息再现规律;确定在象片上识别与区分目标的有效反射率(差)和有效颜色组合;探计目标红外彩色信息预测、增强的有效途径;最后,提出使用这种遥感手段的参考模式。

In this paper a technique for measuring extinction coefficient Kλof transparent films is presented.The principle of the technique is: 1.measurements of effective tra-nsmissivity 2.measurements of effective reflectivity 3.based on relations to solve for Kλ by an iterative method.The major advantage of the presented technique is that it allows to determine the all thermal radiation properties of films with any thickness d by means of computation using the extinction coefficient KλThe results measured of thermal...

In this paper a technique for measuring extinction coefficient Kλof transparent films is presented.The principle of the technique is: 1.measurements of effective tra-nsmissivity 2.measurements of effective reflectivity 3.based on relations to solve for Kλ by an iterative method.The major advantage of the presented technique is that it allows to determine the all thermal radiation properties of films with any thickness d by means of computation using the extinction coefficient KλThe results measured of thermal radiation properties of the polyflon film have proved the technique to be successful.

本文介绍了一种测定透明薄膜衰减系数K_λ的方法。其要点是:1.测定透明薄膜的有效透过率τ_λ~*;2.测定透明薄膜的有效反射率ρ_λ~*;3.利用τ_λ~*=τ_λ~*[ρ_λ,τ_λ=exp(-K_λd)]和ρ_λ~*=ρ_λ~*[ρ_λ,τ_λ=exp(-K_λd)]进行迭代求解,算出K_λ。 本方法的主要优点是,利用衰减系数K_λ,就可以用计算方法确定任意厚度d的透明薄膜的光谱和全波长热辐射性质,即:ρ_λ~*、τ_λ、τ_λ~*、ε_λ和ρ~*、τ~*、ε。 基于所述方法,作者对聚四氟乙烯透明薄膜的热辐射性质进行了论证性测定研究。结果表明,这种方法是可行的。

 
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