傍軸 的英文怎麼說

中文拼音 [bàngzhóu]
傍軸 英文
[物理學] paraxial傍軸成像 paraxial imagery; 傍軸區 [物理學] paraxial region; 傍軸條件 paraxial condition
  • 傍 : Ⅰ動詞1. （靠近） draw near; be close to 2. （時間臨近） be close to 3. （依靠） depend on Ⅱ名詞（姓氏） a surname
  • 軸 : 軸Ⅰ名詞1. （圓柱形的零件） axle; shaft 2. （對稱部分的直線） axis 3. （圓柱形的纏繞器物） roller; spool Ⅱ量詞（用於纏在軸上的線以及裝裱帶軸子的字畫）
  1. Abstract : the intensity distribution in young ' s double pinhole interfer ence expriment is numerically calculate, and compared with the result of the nea r - axis approximation

    文摘:數值計算了楊氏雙孔干涉的光強分佈，與傍軸近似條件下的結果作了比較，並以圖形的方式顯示了干涉條紋的形狀
  2. In chapter 2, a schrodinger formulation for paraxial light beam propagation of the real and comprehensive refractive indexes is represented. the equation for the atom laser beam wave - function is also given by a schrodinger equation, which is similar to the equation of the time - dependent system. therefore, it is possible to investigate the propagation of an atom laser beam

    第二章：本章介紹了傍軸光束在實數折射率介質和復數折射率介質中傳輸的schrdinger形式理論，同時指出由於原子激光的傳輸滿足schrdinger方程，與含時量子系統的傳輸方程類似，故利用含時量子系統的schrdinger形式理論來研究原子激光的傳輸是可行的。
  3. This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up

    全文共分八章，取得的主要成果及創新點如下： （ 1 ）首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理，在考慮如下物理過程和參量的基礎上：光與物質的雙光子相互作用； stokes光的傍軸衍射； langevin （郎茲萬）噪聲源；晶體表面反射和端面反射；增益系數、光束口徑、脈寬和三倍頻光能量密度，推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。
  4. Then the non - paraxial property of chirped pulsed beam and the variation of the non - paraxial correction induced by the variation of the pulse function are respectively discussed to illustrate the influence of the spectrum property on the non - paraxial property of the pulsed beam

    首先分析了超短脈沖的光譜性質對其傍軸近似條件的影響，然後分別討論了啁啾脈沖的非傍軸性質以及不同脈沖形式所導致的不同非傍軸特性。
  5. A simply and analytical formula of the axial light intensity distribution behind a circular aperture is derived by using the helmhotz - kirchhoff integral theorem and the kirchhoff ' s boundary conditions. it is studied the nonparaxial on - axis intensity distribution throughout the whole space behind a circular aperture. an accurate formula to calculate the fresnel number of circular aperture is presented and the validity of usual fresnel number formula is reexamined. by using the analytical formula and diffraction integral formula, some numerical simulation comparisons are done, and it is shown that the results of the two methods are completely coincident

    用亥姆霍茲-基爾霍夫積分定理和基爾霍夫邊界條件，推導出了平面波經小圓孔非傍軸衍射時軸上強度的簡單解析表達式，研究了平面波經小圓孔后整個衍射空間非傍軸的軸上光強分佈.給出了計算圓孔菲涅爾數的精確公式，重新檢查了通常的菲涅爾數公式的有效性.數值計算顯示，應用解析表達式所得的結果與應用衍射積分公式所得的結果完全一致
  6. Considering the vectorial property of the time - average energy flow density, a new extensive definition of the light intensity has been proposed. it is expressed as the time average of the amount of energy which crosses in a unit time and a unit area, so it can be applied to measure quantity of the light intensity at any curved surface

    對于非傍軸標量光場能量傳輸規律的描述則必須考慮其能流密度的矢量特性，應當採用光強的精確定義? ?單位時間單位面積上所流過能量的時間平均值來精確地描述某一橫截面上的能流，這也與光強的實際測量值是一致的。
  7. To deal with the case of 2 dimension spatial self - focusing, it predicts the catastrophic collapse of a self - focusing beam in a kerr medium. this un - physical collapse is due to the invalidity of the paraxial wave equation in the neighborhood of a self - focus

    在該理論應用於空間二維的自聚焦時，出現了光束將無限聚焦的結果，這在物理上是不可想像的，原因是在自聚焦點附近傍軸方程已經失效了。
  8. In section 4, by making use of the fourier transformation for spatial variables and starting from the nonparaxial propagating equation of ultrashort pulsed beam in temporal frequency domain, the nonparaxial solution basing on the paraxial propagating solution was derived, which come to exact solution by iterative of the paraxial integral solution

    在第四節里，通過採用空間變量的傅立葉變換和利用時間頻率域下的非傍軸傳輸方程，我們得出了超短脈沖光束傳輸的非傍軸的修正方法。
  9. In fact, the traditional definition of the light intensity is only suitable to the paraxial - scalar diffraction light field, not to the non - paraxial scalar diffraction light field and vector diffraction light field

    考慮到光場能流密度的矢量特性，這種方法具有很大的局限性，只適用於描述傍軸標量光場，而不適用於對非傍軸標量光場的描述。
  10. However, the effect of rsf leads to the singularity of beam redius focused to zero with infinity laser intensity when the laser power is lager than a critical value in the absence of other effects. then, we anlyze the effect of higher order relativistic nonlinearity ( hor ) and find that this effect can arrest the singularity due to the effect of rsf

    因此，研究了高階相對論性非線性效應對激光傳輸的影響，發現高階相對論性非線性效應能夠抑制這種奇異性的出現；並對高階相對論性非線性效應與非傍軸效應作了比較，發現高階相對論性非線性效應起主要作用。
  11. The preceding chapter, for the most part, dealt with paraxial theory as applied to thin spherical lens systems.

    前一章討論的基本上是應用於薄球面透鏡系統的傍軸理論。
  12. Firstly, in the paper a family of integral solution representing ultrashort pulsed beam propagating in free space have been studied by using the co - moving frame coordinates and the fourier transformation for time variable in terms of well - known paraxial approximation. and the pulsed gaussian - like beam solution can be obtained as a especial solution of the integral solution, where including the pulsed gaussian beam

    首先利用傅立葉變換和惠更斯-菲涅爾衍射積分公式，我們給出了傍軸標量場近似下超短脈沖光束傳輸的基本積分解，並進一步得到了用卷積形式表示的脈沖類gauss光束解（ pulsedgaussian - likebeam ）的普遍形式解。
  13. Firstly, the propagation of intense laser light in ionizing gases is analyzed including the ionization - modulation instability, the vectorial and nonparaxial effects, and the mechanism of laser energy loss. secondly, we analyze the propagation of intense laser light in plasmas, and effects such as the weakly relativistic nonlinearity, the ponderomotive force and the wakefield are analyzed

    文中對強激光在電離氣體中傳輸的電離不穩定性、矢量非傍軸傳輸和能量損耗機制，以及強激光在等離子體中傳輸的弱相對論性非線性效應、有質動力作用和尾波場效應等都作了基本的分析。
  14. In chapter 2, we discuss the optics self - focusing in beam propagation. the early research was based on the scalar approximation and paraxial approximation

    早期的自聚焦研究是在考慮了傍軸近似和標量場近似的前提下得到的。
  15. Chapter 4 : the paraxial propagation of partially coherent beams with the hermite - gaussian mode is investigated. the more generalized and simple expressions of the mean squared width and the beam quality factor of the beam with different mode order are obtained in terms of the cross - spectral density. our re - sults show that the higher order strengthens the variations of the mean beam width and the beam quality factor for partially coherent beams, and the relation between the two parameters of partially coherent beams is independent of the coherence length

    第四章：初步探索了部分相干厄米高斯光的傍軸傳輸，根據交叉光譜密度得到了其不同模階數的平均光束束寬和光束質量因子更一般的解析表達式，較高的模階數使得光束展寬得越快，光束質量變差，且這兩個光束參量的關系與部分相干厄米高斯光的相干長度無關。
  16. The corresponding numerical investigations are carried out and show that for the pulses as short as sub - cycle, svea will cause the spatial singularity for both transverse and longitudinal components of the light field

    在第三節里，我們考慮了超短脈沖光束在傍軸近似下的矢量傳輸特性，並且得到了橫向場和縱向場傳輸的積分解。
  17. In this paper, on the base of paraxial approximations, we present a set of absorbing boundary conditions of 3d elastic wave equations and apply to the 3d elastic wave numerical modeling in isotropic medium

    本文基於傍軸近似法提出了計算三維彈性波方程的吸收邊界條件公式，表示了各邊界面、邊棱和角點處波場所滿足的單程波方程，並在三維彈性波數值模擬中進行了應用。
  18. Chapter 4 : in this chapter, we derive the formula of ponderomotive force from lorentz equation and analyze the effect of ponderomotive self - channeling ( psc ) firstly. it is found that the effect of psc enhances the effect of beam focusing. and a nonparaxial propagation equation including the effect of psc is established

    分析激光傳輸過程中的有質動力自通道效應，結果表明，有質動力自通道效應能增強激光自聚焦，在此基礎上建立了包含有質動力自通道效應的非傍軸傳輸方程。
  19. Chapter 2 : using a so - called variance matrix, we studied the propagation and the focusing characteristics of the paraxial light beams. the quantities characterizing the gross features for a paraxial optical beam, such as the beam width, the divergence, the curvature radius of the wavefront, the complex beam parameter q. and the beam quality factor, are related by using variance matrix

    第二章：闡述了常數折射率介質中光束的傳輸和聚焦，建立了表徵傍軸光束總的特徵的量，如：束寬、衍射發散角、波前曲率半徑、復光束參數q與變換矩陣的關系，得到了光束質量因子和變換矩陣行列式的定量關系。
  20. In the case of ultrashort laser pulse, the effect of finite pulse length is anlyzed, and self - steepening in the front of the pulse will occur when only relativistic nonlinearity is considered

    同時，對于超短脈沖傳輸，分析了有限脈沖寬度效應對傍軸方程的修正，當只考慮相對論性非線性效應時將會引起激光脈沖前沿自陡峭。
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