laser-beam diffraction 中文意思是什麼

laser-beam diffraction 解釋
激光束衍射
  • laser : n 鐳射激光，受激發射光，激光；萊塞；激光器，光激射器 （ ＝ light amplification by stimulated emis...
  • beam : n 1 梁，棟梁，桁條；（船的）橫梁。2 船幅；（動物、人的）體幅。3 （秤）桿，杠桿，（織機的）卷軸，...
  • diffraction : 分解
  1. In this paper we also designed the computer optical elements based on the scalar quantity diffractive theory, which can change the laser beam into a square frame. we mainly refered to the one of those improved algorithms of gerchberg - saxton ( gs ). with the computer simulation and drawing program, the simulated diffraction patterns were gotten in this paper, the results agreed with the anticipated diffraction patterns ; in the paper we also design the computer optical elements that can shape the laser beam into a double circle shape, a lamp shape and so on

    計算機模擬成像結果與預期得到的衍射圖樣相符合;文中還討論了設計參數對成像質量的影響規律。同時，本文還用標量理論設計了把高斯光束整形為雙圓斑形光束的計算機光學元件，文中主要是參考改進的gs （ gerchberg - saxton ）演算法;通過計算機模擬，得到了計算機光學元件表面的相位浮雕圖。
  2. In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam

    同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸，測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強，實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小，且分佈近似貝塞爾分佈，符合無衍射光束的特性;經過聚焦后，呈現三維分佈中空的光束bottlebeam ，實驗結果與理論分析基本吻合。
  3. In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot, based on the fraunhofer formula for light wave scaler diffraction theory, according to the definition of first order moment centroid position, the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived

    摘要為分析振幅和相位發生畸變情況下光束焦斑質心位置所受的影響，以光波標量衍射理論中的夫瑯和費衍射公式為基礎，根據光斑強度分佈一階矩質心位置的定義，推導了直接依賴于光束近場復振幅分佈的焦斑質心位置的一般表達式。
  4. To achieve diffraction - limited beam quality laser, single mode fiber is used as waveguide in both fiber amplifier and fiber laser in the past

    為了實現高光束質量激光輸出，傳統的光纖放大器和光纖激光器均採用芯徑較小的單模光纖作為增益介質波導。
  5. Based on laser molecular beam epitaxy, the strain behavior and the corresponding control technology in oxides heteroepitaxial system, especially in ferroelectric thin films with perovskite structure, was systematically studied by using in situ reflected - high - energy - electron - diffraction ( rheed ). some original and meaningful results were obtained. following aspects were included in this dissertation : the structure of thin films is analyzed by rheed

    本論文基於激光分子束外延的基本原理，以高能電子反射為主要監測工具，對氧化物薄膜特別是鐵電氧化物薄膜異質外延過程中應變行為及其控制方法進行了系統的研究，並取得了一系列有意義的結果，主要包括以下內容:利用反射高能電子衍射（ rheed ）的信息對薄膜結構進行分析。
  6. The light density has been directly defined as the square of an absolute value and it is used to describe the propagation and transformation of laser beam in the traditional scalar diffraction theory

    在傳統的標量衍射理論中，採用光場復振幅的平方作為光強的定義來描述光場的能量傳輸規律。
  7. In this paper we designed the relief height of the computer optical elements mainly based on the geometrical theory and the scalar quantity diffractive theory. based on the geometrical theory, we achieved the height of phase relief that can shape the laser beam into 4 square spots, square frame, 1 square spot ; with the computer simulation and drawing program, the diffraction patterns are gotten in this paper, the results agreed with the anticipated diffraction patterns ; in this paper we also discussed the affects to the diffraction patterns by changing some parameters

    本文主要基於幾何理論和標量理論來設計計算機光學元件表面的浮雕高度，文中用幾何理論推導出了把高斯光束整形為四個矩形光斑束，正方框形光束、矩形平頂光斑的計算機光學元件表面的浮雕公式;通過計算機輔助設計，計算得到了計算機光學元件表面上的浮雕高度，設計出了計算機光學元件。
  8. The boe designed and made in this paper is capable of converting the incidental laser beam into structural light of 2 dimensional dots array, and the diffraction image is nonlocality

    本文設計、光刻的boe能將入射的激光束整形成空間二維點陣狀結構光，且其衍射像是非定域的。
  9. At the same time, the possibility of using nonlinear optics in widening the detecting wave band of hartmann - shack wavefront sensor is exploringly discussed. adaptive optics guarantees the beam quality of laser projecting system. beam cleanup, atmospheric turbulence compensation and correction of any disturbance and fabrication error in the light way are required to promise a near diffraction beam, but normal adaptive optics system can only correction one of them

    自適應光學進行光束大氣傳輸波前畸變校正時，要求系統必須能進行光束凈化和校正大氣湍流造成的波前畸變，並且能夠同時有效地克服發射系統製造誤差、重力變形以及光路內部氣體擾動的影響，得到接近衍射極限的輸出激光光束。
  10. And the results show that slice muscle tissue can make the incident laser beam generate obvious diffraction phenomena

    結果表明，激光束經過肌肉組織后，能在遠場處產生明顯的衍射條紋。
  11. The effects of multi - grating diffraction result in enhancement of the diffraction efficiency in two - beam interference experiments. with self - pumped phase - conjugate external cavity of ce : batio3 for the cw ti : sapphire laser, the frequency shift of the laser output due to the self - scanning effect was observed, which approve the possibility of the self - scanning tunable method

    同時位相共軛外腔還使得激光閡值由未加位相共軛腔時的4 . 7w下降到加位相共軛腔時的3 . 6w ，利用外腔理論對實驗結果進行了理論分析，理論計算結果和實驗結果基本符合。
  12. The cavity mirror can also be designed according to an objective function. the second part ( the 5th chapter ) is to introduce the concept of low diffraction beam and to illustrate the principle and method how to realize it. a low diffraction beam is obtained by reconstructing the existing optical resonator of a co2 laser using a special diffraction phase plate

    第二部分（第五章）提出了低衍射光束的概念，簡述了實現低衍射光束原理和方法；通過腔內放置衍射元件的方法實現了低衍射光束的輸出；並對這種光束進行了理論和實驗研究，理論模型結果和實驗結果很好地吻合。
  13. When the laser beam goes through the diffraction grating, it is split up into a central bright beam plus a number of side beams

    當激光束射入衍射光柵后，被分成一個中間的明亮光束和一些處于旁邊的光束。
  14. First, we propose a novel and simple mirror to reflect atoms by using intensity gradient induced by a blue - detuned semi - gaussian laser beam. the diffraction characteristics of an incident gaussian beam by straight edge bounding a semi - infinite opaque plate are investigated from kirchhoff scakr wave theory in the fresnel limit

    本文首先提出了採用半束蘭失諧高斯光束的原子反射鏡方案，研究了在fresnel衍射下入射高斯光束被半無限大不透明平板擋去半邊后的直邊kirchoff衍射特性。
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