色散介質 的英文怎麼說

中文拼音 [shǎisǎnjièzhí]
色散介質 英文
dispersing medium
  • 色 : 色名詞[口語] （顏色） colour
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro

    激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。
  3. The pulses can be broadening and become negatively chirped while propagating in anomalous dispersive media. in normal dispersive media, the pulses can be broadening, positively or negatively chirped, or even the dispersion - free propagation can be achieved, if the beam and material parameters are suitably chosen

    在負色散介質中傳輸時，脈沖會變寬、帶有負惆啾:而在正色散介質中傳輸時，脈沖會變寬、帶有正惆啾或負叨嗽，當光束和色散參數滿足一定條件時能實現「無衍射無色散」傳輸。
  4. Magnetostatic wave ( msw ) is a kind of slow dispersive wave propagating in magnetic medium, which is also a microwave electromagnetic wave. so the propagation characteristics of msw can be controlled by bias magnetic fields

    靜磁波（ msw ）是一種在磁性介質中傳播的慢色散波，也是一種微波電磁波，可通過磁控方法改變靜磁波的傳播特性，並與具有電磁性的物質發生作用。
  5. Network analysis of the dispersion characteristics for various dielectric waveguides

    介質波導色散特性的微波網路分析
  6. Fdtd analysis of dispersion characteristics of 2d dielectric photonic crystal described by effective permittivity in grid

    採用等效介電常數時域差分法分析二維介質型光子晶體色散特性
  7. 5. without making the paraxial approximation, a detailed study on the propagation of ultrashort pulsed bessel beams in linear normal and anomalous dispersive media has been performed using the method of fourier transform

    未作近軸近似的條件下，用傅立葉積分變換法詳細研究了超短脈沖貝塞爾光束在正、負色散介質中的傳輸特性。
  8. The dielectric constant of srtio3 ( sto ) thin films is voltage - dependent near the curie temperature tc ( about 40k ). and no dispersion in is observed in sto at frequencies up to 10 ghz. yba2cu3o7 - x ( ybco ) high temperature superconducting thin film has very low microwave surface resistance

    Srtio3 （ sto ）薄膜在其居里溫度附近（ ~ 40k ）具有介電常數隨電場強度變化而變化的性質，同時sto在10ghz以下介電常數沒有頻率色散性。
  9. The simulation results have shown that sigvd of the temporal part is observed when the diffraction - free distance is longer than the dispersion length of sigvd. sigvd can be used to compensate the dispersion of medium, and a diffraction - free and quasi - dispersion - free pulsed beam, similar to a spatiotemporal soliton, can be produced in a dispersion medium

    數值模擬的結果表明，只要相應的衍射距離大於空間誘導色散的距離，空間誘導色散理論可以很好的描述脈沖的演化過程；利用空間誘導色散可以補償介質色散，從而可以在色散介質中實現無衍射無色散的類時空孤子的傳輸。
  10. Numerical examples illustrated the spatiotemporal properties such as spectrum redshifting, narrowing and pulse distortion, etc. it is stressed that the " antibeam " behavior of ultrashort pulsed beams can be avoided, if a suitable truncation function is introduced to the initial pulse spectrum

    數值計算例說明了在色散介質中會出現譜紅移、變窄、及脈沖形變等傳輸效應，而且對初始光譜引入截斷函數可以避免「非光束」行為。
  11. The condition, under which the paraxial approximation is valid, is given. 4. starting from the rayleigh diffraction integral, the propagation equation of ultrashort pulsed beams in dispersive media has been derived without making the paraxial approximation and slowly varying envelope approximation ( svea ), which allows for relatively large angles

    從瑞利衍射積分公式出發，未作慢變振幅近似和近軸近似的條件下，導出了等衍射長度超短脈沖高斯光束在色散介質中非近軸傳輸方程，可用來處理色散介質較大角度的傳輸。
  12. Then, the auxiliary fields fdtd is used to the periodic structure made of dispersive material, such as the pyramid absorbers in anechoic chamber. the permittivity vs frequency property of the absorber is approached by some dispersive equation model, such as debye model and lorentz model, so the broadband response of the absorber can be gotten through one calculation

    然後將輔助場fdtd應用到色散媒質周期結構中，導出了色散媒質中的迭代式，並以暗室吸波材料陣列為例進行計算，提出用某一類型的介電常數色散函數（如debye型、 lorentz型等）來逼近材料的介電常數頻率特性的方法，從而可以對吸波材料進行一次性寬頻計算。
  13. In 6. 635, topics covered include : special relativity, electrodynamics of moving media, waves in dispersive media, microstrip integrated circuits, quantum optics, remote sensing, radiative transfer theory, scattering by rough surfaces, effective permittivities, random media, green ' s functions for planarly layered media, integral equations in electromagnetics, method of moments, time domain method of moments, em waves in periodic structures : photonic crystals and negative refraction

    本課程所覆蓋的論題包括：狹義相對論、運動媒質的電動力學、色散媒質中的波、微帶集成電路、量子光學、遙感、輻射傳輸理論、粗糙表面上的散射、有效介電系數、隨機媒質、平面層狀媒質的格林函數、電磁學中的積分方程、矩量法、時域矩量法、周期結構中的電磁波：光子晶體和負折射率。
  14. In the picosecond and femtosecond time field, the durations of the pump and signal pulses are so short that special propagating characteristics of ultrashort pulse laser should be taken into account, especially the pulse broadening induced by the group velocity mismatch and the group velocity dispersion

    在皮秒和飛秒時域，由於泵浦光與產生的信號光的持續時間特別短，故在討論超短脈沖與物質相互作用時必須計及超短脈沖在介質中傳輸的特殊性質，尤其是群速失配與群速色散引起的脈沖展寬。
  15. In succession, the theory of chirped - pulse amplifier system is given in detail, firstly, studying from designing experimental light road and optical components to theoretical analysis, we par ' tly finished the system by ourselves. about ultr a - shoft pulse with a pulse - width of 9. 8f s and output power of 650mw and band - width of about l 20nm is output from oscillator source, secondiy, the stretching capacity of single grating four - pass stretcher is measured using abcd matrix combining collins function, and the effect of relativ e parameters to the streching ratio is also simulated. thirdly, a new type of disjunctional frequency moduiating function is provided according to the gain - narrowing and gain - saturation which are appeared in the co urse of amplification, under modulating the two effects are both controlled on some e xtent, fourthiy, the effect of ase that is often ignored by people is analyzed and the resolving methods are also given

    從光路、光學元件的自行設計到理論分析計算，初步建立了一臺實驗系統；採用abcd矩陣法結合collins公式計算了四通式單光柵展寬器的展寬量，並模擬了相關參數對展寬比的影響，對實驗具有指導意義；評價了再生放大器和多通放大器的優缺點，對放大過程中通常忽略的放大自發輻射現象（ ase ）進行了分析，並提出了相應的解決方法；針對放大過程中出現的增益窄化和增益飽和現象，對輸入種子脈沖提出了一種新的分段頻率調制函數，實現了對增益窄化效應和增益飽和效應的共同抑制；提出了系統的材料（包括放大介質和光路中的普通介質）正是融合高階色散的來源。
  16. By a large amount of calculations, the influence of the structure dimensions and the dielectric parameters on dispersion characteristic and coupling impedance of this kind of slow - wave structure is obtained. then, the linear beam - wave interaction theories of the arbitrarily - shaped helical groove waveguide and the dielectric into the arbitrarily - shaped helical groove waveguide are deduced. by the numerical calculations, the relationship is got between the small signal gain, bandwidth, electromagnetic " hot " velocity and the electronic beam, the structural parameters

    通過數值計算，獲得了此類慢波結構的色散特性和耦合阻抗隨結構幾何尺寸和介質參數的變化規律;在此基礎上，建立了任意槽形螺旋槽及中心加介質棒的任意槽形螺旋槽行波管的注-波互作用線性理論，並編製程序，計算了管子的小信號增益、帶寬、電磁慢波的「熱」相速與電子注參數、結構參數之間的關系，獲得了增加帶寬或增益的途徑。
  17. Quantum coherence and interference have led to the observation of many new effects and new techniques in quantum optics and atomic physics. examples include coherent population trapping, electrom agnetically induced transparency, lasing without inversion, and enhancement of the index of refraction without absorption

    當應用相干場來驅動光學介質時，可以使得介質的吸收和色散關系發生極大改變，產生許多新的效應，如相干布居捕獲、電磁誘導透明、無反轉激光、無吸收折射率增強等。
  18. The solution for nls equation in normal dispersion has been gotten, including chirped and nonlinear saturation medium effect, the solution for the influence of dark soliton by chirped and nonlinear saturation medium effect is discussed in detail

    摘要運用行波法求解正常色散區含頻率啁啾和介質非線性飽和效應的nls方程，並由得到的孤子解討論了啁啾和介質非線性飽和效應對暗孤子傳輸特性的影響。
  19. The paper did scrupulous discussion and investigation on the interaction between electron beam and standing wave field in the gyroklystron, which is typical in the electron cyclotron maser which action rf system is resonant cavity. the main works of this dissertation are listed as following : first, solving field in absorbing material and field matching method were used to derive the dispersion equation in waveguides and field matching formulas of hybrid modes in an abrupt cavity with absorber. based on the theoretical analysis, numerical simulations of the cavities in gyroklystron were done

    主要工作有:一、採用吸收介質分區求解及場匹配的方法推導出含有吸收層的色散方程，單側加入吸收介質及兩側均加入吸收介質兩種突變結構混合模場的匹配方程，在理論分析的基礎上，通過相關的模擬軟體，建立了迴旋速調管介質加載中間腔的計算模型，對迴旋速調管中間腔進行了數值模擬，並給出了主要的計算結果。
  20. 3. in order to show the fact that the - licrowave modulates the background plasma density and the density grating influences the propagation of the microwave in return, the dispersion relation of the dielectric cerenkov maser filled with plasma grating is derived when the modulation parameter is varied

    三、為了反映等離子體被微波場調制從而形成密度周期性分佈的等離子體柵，反過來影響電磁波的傳播這一物理事實，在調制系數變化的情況下，從等離子體柵的等效模型出發，推導了等離子體柵填充的介質cerenkov脈塞的色散方程。
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