diffraction integral造句
造句與例句
手機版
- A comprehensive review of the basic analytical methods for the beam transformation including the matrix optics method , diffraction integral method and wigner distribution function method is summarized
對研究光束傳輸變換的基本理論方法，包括矩陣光學(xué)方法、衍射積分方法和wigner分布函數(shù)方法作了歸納。 - Based on the fresnel diffraction integral , the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed
摘要基于菲涅耳衍射積分公式，推導(dǎo)出了會聚球面波通過環(huán)形光闌后場分布的解析公式，并討論了一些特殊情況。 - Based on huygens - fresnel diffraction integral theory , the propagation properties of bessel beam were studied in this paper . by using the analyses of geometrical optics , hollow beam are found and the formula of the starting point 、 the end point and the bottle length can be got
論文中,我們基于惠更斯-菲涅耳衍射積分理論研究了由軸棱錐產(chǎn)生的貝塞爾光束的傳輸特性,并且通過幾何光學(xué)解析無衍射光束的聚焦特性。 - Abstract : in this paper , starting from the generalized huygens - fresnel diffraction integral and b - integral definition , and based on the statistical - optics method , the nonlinear propagation properties of laser beams with amplitude modulations and phase fluctuations have been studied in detail
文摘:廣義惠更斯-菲涅耳衍射積分和b積分定義出發(fā)，并利用統(tǒng)計光學(xué)方法，對有振幅調(diào)制和位相畸變光束的非線性傳輸特性作了詳細研究。 - The main contents of this thesis are : ( 1 ) two numerical reconstruction methods - direct fourier transform method and envelope method , are presented . these methods are deduced on the base of fresnel diffraction integral formula , which is under the condition that particle field is illuminated by plane wave
主要工作內(nèi)容有： ( 1 )分析推導(dǎo)了平面物菲涅耳衍射的兩種常用數(shù)值實現(xiàn)算法，即直接傅里葉變換法和卷積法，結(jié)論表明后者更符合實際工作的要求。 - 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(fā)，未作慢變振幅近似和近軸近似的條件下，導(dǎo)出了等衍射長度超短脈沖高斯光束在色散介質(zhì)中非近軸傳輸方程，可用來處理色散介質(zhì)較大角度的傳輸。 - 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(dǎo)出了平面波經(jīng)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(jīng)小圓孔后整個衍射空間非傍軸的軸上光強分布.給出了計算圓孔菲涅爾數(shù)的精確公式,重新檢查了通常的菲涅爾數(shù)公式的有效性.數(shù)值計算顯示,應(yīng)用解析表達式所得的結(jié)果與應(yīng)用衍射積分公式所得的結(jié)果完全一致 - The results of the axial and transversal intensity distributions of gaussian beams and 0 - order bessel - gaussian beams show that the results by the optimized laguerre - gaussian truncated series are in good agreement with those by the fresnel diffraction integral method if the integration plane is not close to the aperture
對高斯光束和零階貝塞爾高斯光束的軸向和橫向光強分布的計算結(jié)果表明：當(dāng)積分面不是很靠近光闌時，用參數(shù)最佳化選取的拉蓋爾高斯截斷級數(shù)法與用直接數(shù)值積分所得結(jié)果符合很好。 - In this context , the nlo properties of three kinds of essa ultrathin films are investigated systematically in terms of experiment and theory . the main contents are list in the following : based on the traditional z - scan theory and the huygens - fresnel ( h - f ) diffraction integral principle , we present a double - sided film z - scan theory that is suitable to characterize the nlo properties of the double - sided nonlinear mediums
本論文從實驗和理論上系統(tǒng)地研究了三類靜電自組裝超薄膜的光學(xué)非線性,主要研究內(nèi)容如下:在已有的z - scan理論基礎(chǔ)之上,基于惠更斯-菲涅耳衍射積分原理推導(dǎo)出了適合于表征雙面非線性介質(zhì)光學(xué)非線性的雙面膜z - scan理論。 - Based on the generalized huygens - fresnel diffraction integral and in consideration of the effect introduced by astigmatism , the transformation properties of gaussian beams passing an astigmatic lens are studied analytically , the beam quality of astigmatic gaussian beams is analyzed in terms of the beam propagation factor ( m2 - factor ) and power in the bucket ( pib ) , and illustrated with numerical examples
基于廣義惠更斯-菲涅爾衍射積分，并考慮了像散的影響，對高斯光束通過像散透鏡后的傳輸特性作了解析研究，以光束傳輸因子和桶中功率為參數(shù)分析了像散高斯光束的光束質(zhì)量，并以數(shù)值計算例加以說明。 - It's difficult to see diffraction integral in a sentence. 用diffraction integral造句挺難的
- In this paper , the stl technique with cw modulated top - hat beam excitation is investigated theoretically and experimentally . 1 . the theoretical model based on the fresnel diffraction integral is developed to describe the stl signal excited with the cw modulated top - hat beam for the first time to the best of our knowledge
本論文提出采用連續(xù)調(diào)制的平頂光束作為激勵光的表面熱透鏡技術(shù)測量薄膜吸收的方法,主要開展了如下工作: 1 .建立了連續(xù)調(diào)制的平頂光束作用下樣品的表面熱透鏡信號模型。
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