diffraction-free beam 中文意思是什麼
diffraction-free beam
解釋
消衍射光束- diffraction : 分解
- free : adj （freer; freest）1 自由的，自主的；自立的。 a free action 自由行動。 free competition 自由競...
- 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，...
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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。 -
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。 -
Under the weakly guiding approximation, we derive the electric - field distribution of the lp01 mode in the hollow fiber. the far - and near - field distribution of the lp01 - mode output beam in free space is calculated numerically from fraunhofer and fressnel diffraction theory
在弱波導近似下導出了中空光纖中lp _ （ 01 ）模的電場分佈，數值推算了lp _ （ 01 ）模輸出光束的遠場和近場分佈。
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