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first-order mode
相关语句
  第一阶模态
     the disorder of coupled pendulums has a mode localization phenomena, at the first-order mode localization phenomena, the amplitude ratio increases with the increase of parameter ε.
     失调耦合摆有模态局部化现象,第一阶模态振幅比随ε的增大而增大.
短句来源
  “first-order mode”译为未确定词的双语例句
     Filtering Out the First-Order Mode and Its Application in Y-Branch and Multimode Interferometric Structure
     一阶模的滤除及在Y分支和多模干涉结构中的应用
短句来源
     The main factor that introduces asymmetry into the output of Y-branch or MMI structure is the first-order mode guided by them. A coupler in which the waveguides which can only guide the fundamental modes are located on both sides of the multimode waveguide is designed, and this coupler can filter out the first order mode guided by it.
     引入Y分支和多模干涉结构输出的不对称主要原因是这两种结构中产生了一阶导模 ,设计一种新的耦合器结构 ,在这个结构中 ,两根单模波导分别放置在一根多模波导两边 ,并且单模波导的传播常量与多模波导的一阶模的传播常量相同 ,这种结构可以将一阶导模滤除。
短句来源
     The difference of modal strain is got by the first-order mode identified from the first part above, which then be used to identify single damage.
     利用第一部分识别出来的第一阶振型求出振型应变差,进而进行单处损伤识别;
短句来源
     The mass-spring system,which is the sensitive element of horizontal tunneling magnetometer,was modeled. Equations of first-order resonance frequency and stiffness of the system were setup. The emulation charts of stress,static force deformation and first-order mode of vibration all meet the demand of design;
     建立了水平式隧穿磁强计的敏感元件——质量弹簧系统的模型,推导了系统刚度和1阶固有频率的计算式,应力仿真图、静力变形仿真图和1阶振型仿真图均符合设计要求,结果证明模型是正确的。
短句来源
     Among all of AOPs,O3/UV and O3/ H2O2/UV demonstrated a relatively high oxidation rate. The decomposition rate of the O3/UV reaction met the pseudo first-order mode,the rate constants of DCAA were 4-5 times higher than TCAA at the same initial dissolved ozone concentrations.
     对O3/UV进行的动力学研究,发现反应服从准一级反应动力学模式,在相同的初始溶解臭氧浓度下,DCAA的k'值为TCAA的4~5倍。
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  first-order mode
The etched laser oscillates in the first-order mode.
      
In such transformations the first-order mode of reaction seems to be eliminated to various extents by the introduction of impurities as solid solution to the structure.
      
In such transformations the first-order mode of reaction seems to be eliminated to various extents by the introduction of impurities as solid solution to the structure.
      
The tweeks of third mode attenuate faster than the second- and first-order mode tweeks.
      


In this paper we have given a numerical calculation and theoretical analysis of the lateral waveguide and the lateral mode selectivity, of the injected stripe-geometry semiconductor DH lasers. The calculation and analysis include effective refractive index and real refractive index distributions, phase plane, radiation patterns of far field and the lateral mode selectivity of the waveguide. Comparing the calculated results shows that the lateral waveguide in PCW structure is more stationary but the...

In this paper we have given a numerical calculation and theoretical analysis of the lateral waveguide and the lateral mode selectivity, of the injected stripe-geometry semiconductor DH lasers. The calculation and analysis include effective refractive index and real refractive index distributions, phase plane, radiation patterns of far field and the lateral mode selectivity of the waveguide. Comparing the calculated results shows that the lateral waveguide in PCW structure is more stationary but the first order mode tends to be stimulated than that in slab waveguideo But by decreasing the thickness factor r, the selectivity can be improved, and the decreasing of γ can be realized by widening and shallowing the channals through the technology of fabrication.

本文以PCW结构和平面界面结构的半导体激光器为例,对它们的侧向模式导引机制和模式选择性作了理论分析,对等位相面分布和辐射远场图做出了较为精确的计算。计算结果与国内外报道的有关实验结果符合得很好。

As the gain-guided modes in semiconductor lasers are not energy-orthogonal,anyone of these "improper" modes should be composed of a set of energy-orthogonal "pro-per" modes.We further propose that under certain suitable conditions,a new mecha-nism of first order mode locking pulsation in a single gainguided mode semiconductorlaser is quite possible. This possibility has been verified theoretically.

本文从理论上提出由于增益波导各模式间不满足功率正交关系,因而每条模式应由若于条满足功率正交关系的本征模式所组成,故在一定条件下这些本征模式有可能产生一阶锁模自脉动的新机制.

Abstract Using a method for finding self consistent solutions of the optical field, carrier diffusion, and mode coupling equations, we have studied the transverse mode control of burried structure vertical cavity surface emitting lasers with trapezoid section. The influence of the slope angle of the confining region, the radius of the active region, and injected current on the radiation losses of the fundamental mode and the first order mode have been investigated. The results show that...

Abstract Using a method for finding self consistent solutions of the optical field, carrier diffusion, and mode coupling equations, we have studied the transverse mode control of burried structure vertical cavity surface emitting lasers with trapezoid section. The influence of the slope angle of the confining region, the radius of the active region, and injected current on the radiation losses of the fundamental mode and the first order mode have been investigated. The results show that the radiation loss of the first order mode is always larger than that of the fundamental mode, so that the high order transverse mode can be suppressed very well in this laser. Increasing the slope angle of the confining region is in favour of single fundamental mode operation. However, the radiation loss of the fundamental mode also increases with the slope angle, giving rise to a large threshold current. For a given radius of the active region, we have calculated an injected current range of single mode operation for different slope angles. Thus, the best slope angle of the confining region for single mode operation can be obtained in a given injected current range.

本文采用求解光场方程,载流子扩散方程和模式耦合方程自洽解的方法研究了具有梯形截面掩埋结构垂直腔面发射半导体激光器的横模控制.计算了掩埋限制区的倾角以及激光器有源区半径等对基模和一阶模的辐射损耗的影响.结果表明,在这种结构的半导体激光器中,一阶模的辐射损耗总比基模大,因而可以很好地抑制高阶横模.增大限制区的倾角,虽然有利于实现单基模工作,但是因为基模的辐射损耗也随之增大,从而激光器的阈值电流也相应增大.对于一定的有源区半径,我们找到了不同限制区倾角时单基横模工作的注入电流区域.从而可以确定在特定的注入电流范围内实现单基横模的最佳限制区倾角.

 
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