激光束衍射 的英文怎麼說

中文拼音 [guāngshùyǎnshè]
激光束衍射 英文
laser-beam diffraction
  • : Ⅰ動詞1 (水因受到阻礙或震蕩而向上涌) swash; surge; dash 2 (冷水突然刺激身體使得病) fall ill fr...
  • : Ⅰ名詞1 (照耀在物體上、使人能看見物體的一種物質) light; ray 2 (景物) scenery 3 (光彩; 榮譽) ...
  • : Ⅰ動詞1 (捆; 系) bind; tie 2 (控制; 約束)control; restrain Ⅱ量詞(用於捆在一起的東西) bundle;...
  • : [書面語]Ⅰ動詞(開展; 發揮) spread out; develop; amplifyⅡ形容詞(多餘) redundant; superfluousⅢ名...
  • : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
  1. Abstract : the far - field spot characteristics of laser converted by random phase plate are analyzed theoretically, including the shape, size, rotational symmetry and diffractive efficiency of the spots, as well as the distribution of subsidiary spot. by comparing the influence of phase element shape ( triangular, square and hexagonal ) on the characteristics, we found that the random phase plate with hexagonal array structure is more suitable for the beam smoothing in laser fusion

    文摘:從理論上分析了經隨機位相板變換后在遠場的斑特性(包括斑的形狀、大小、旋轉對稱性、效率以及旁瓣分佈) ,通過比較三種形狀位相元(等邊三角形、正方形和正六邊形)的遠場斑特性,得知正六邊形位相元結構的隨機位相板更適合於聚變中的勻化。
  2. 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:與物質的雙子相互作用; stokes的傍軸; langevin (郎茲萬)噪聲源;晶體表面反和端面反;增益系數、口徑、脈寬和三倍頻能量密度,推導出高通量在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。
  3. 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的中心斑尺寸,測量了不同闌孔徑和不同稜角情況下的最大無距離和傳播軸附近橫截面內微小孔中的強,實驗結果顯示當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,符合無的特性;經過聚焦后,呈現三維分佈中空的bottlebeam ,實驗結果與理論分析基本吻合。
  4. In this thesis, the properties of the free - space propagation and focus were studied when a beam propagates through an axicon

    本論文主要是探討經過軸棱錐轉換后產生的無的傳輸特性和聚焦特性。
  5. A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it. some results have been summarized as follows : l. according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront, the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied

    本論文在波前畸變檢測和控制上進行了新的探索,主要就空間相位調制環路徑向剪切干涉儀以及它對波前畸變的檢測和液晶空間調制器及其對中頻段波前畸變的控制進行了研究,其研究的內容和取得的成果如下:一、根據標量理論,結合低頻波前畸變的高斯隨機位相分佈模型,研究了不同均方根梯度低頻畸變波前對焦斑聚焦性的影響,並採用描述中頻段波前畸變的功率譜密度概念,模擬計算了它對焦斑旁瓣的貢獻。
  6. 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

    本論文基於分子外延的基本原理,以高能電子反為主要監測工具,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:利用反高能電子( rheed )的信息對薄膜結構進行分析。
  7. At first, the author analyzed some chief factors such as light beam drift and atmospheric turbulence that affect the precision of the laser collimation in brief. then, the author studied the plan of the laser collimation generating nondiffracting beam and automatic level system with high precision. at last, the author completed the measurement of the straightness guideway by using ccd ( charge coupled device ) as the receiver and computer imaging processing

    文章首先簡要地分析了自身漂移、大氣湍流等影響準直精度的主要因素,然後對系統的準直方案進行論證,並確定了無的生成方案、高精度自動安平系統的結構方案,最後以ccd為接收器件,通過計算機圖像處理,完成對軌道直線性的測量。
  8. The three - dimensional profile of the temperature rise, the radial profile of the surface deformation and the diffraction signal of the probe beam obtained with both top - hat and gaussian beam excitations are compared by numerical calculations

    求解對應的熱彈方程,得到表面形變場分佈。 2 .通過數值模擬,比較了平頂和高斯勵下樣品內部溫度場、表面形變場和探測信號的徑向分佈。
  9. 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、刻的boe能將入整形成空間二維點陣狀結構,且其像是非定域的。
  10. 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

    自適應學進行大氣傳輸波前畸變校正時,要求系統必須能進行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系統製造誤差、重力變形以及路內部氣體擾動的影響,得到接近極限的輸出
  11. And the results show that slice muscle tissue can make the incident laser beam generate obvious diffraction phenomena

    結果表明,經過肌肉組織后,能在遠場處產生明顯的條紋。
  12. The light is emitted by the laser diode and enters a diffraction grating

    二極體中發出,柵。
  13. Starting from the propagation law of partially coherent light and using a typical partially coherent light, i. e., gaussian schell - model ( gsm ) beam describing the multimode laser in practice, i present in this dissertation the research results on vectorial partially coherent light, spectral changes of partially coherent light passing through optical element, spectral switch of partially coherent light diffracted by an aperture, and the spectral anomaly of diffracted fully spatially coherent light by an aperture

    本文從部分相干的傳輸理論出發,以模擬實際多模的一類典型部分相干? ?高斯-謝爾模型( gsm )為主要研究對象,對矢量部分相干、部分相干通過學元件的譜變化、被的部分空間相干譜開關和被的完全空間相干譜異常等現象進行了深入研究。
  14. When the laser beam goes through the diffraction grating, it is split up into a central bright beam plus a number of side beams

    柵后,被分成一個中間的明亮和一些處于旁邊的
  15. Both the experimental and theoretical results show that the low diffraction beam has great advantages over the gaussian beam in an ablation - dominated material removal processes

    發現了低比高斯消融聚合物材料上具有顯著的優點。
  16. The main work of this dissertation focuses on the analysis and design theory for a resonator with diffraction optical elements by using a matrix eigenvalue method. the principle and method how to realize a low diffraction beam have been described. both the experimental and theoretical results show that the low diffraction beam has great advantages over the gaussian beam in an ablation - dominated material removal processes

    本文的重點是:闡述了利用矩陣本徵值方法分析和設計諧振腔的系統理論;簡述了產生和實現低的原理和方法,實驗發現了低比高斯所具有的獨特性能;理論設計和研製了學元件,並通過實驗獲得空心,提出了對不同空心的描述方法。
  17. The hollow optical beams have been analyzed theoretically, and have been realized experimentally by placing a diffraction optical element in the cavity

    在理論上對空心進行了分析,並研製了能產生空心學元件,將其插入諧振腔內,實現了空心
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