laser speckle 中文意思是什麼

laser speckle 解釋
激光斑點
  • 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...
  • speckle : n. 斑點；斑紋〈常用 p. p. 〉。vt. 1. 加斑點。2. 玷污。3. 點綴。
  1. It has been shown that when the partially coherent beams propagate in the atmosphere, it may be less affected by turbulence than are fully coherent ones. moreover in laser fusion a highly coherent beam is transformed into a partially coherent beam, for reducing the speckle and for getting more smooth focused spot

    例如，部分相干光在大氣中傳輸時所受大氣騷動的影響要比完全相干光小得多;並且部分相干光束具有光強比較均勻，對散斑低靈敏等優點而被應用於激光核聚變等領域。
  2. As proved by experiments, the present method can effectively restrain the influence of speckle to the laser triangular measurement system and the obtained calibration accuracy is about 0. 05mm within 100mm depth range

    只需對特殊設計的模塊進行一次測量，便可完成對整個測量系統的校準。該方法能夠有效的抑制激光散斑的影響，具有較高的系統精度。
  3. Influence of incidence angle on the measurement of surface roughness by laser speckle

    激光入射角對光聲信號大小的影響
  4. The influences of optical feedback and external cavity length on the laser output are studied, and the relation between fluctuations of speckle signal and the transverse velocity of rough surface is discussed

    分析了隨機變化的反饋強度與外腔長度對激光光譜特性的影響。模擬了散斑干涉信號的波動與粗糙表面橫向移動速度的關系。
  5. Measuring the siles of the grains in emnesivns using the speckle contrast of laser

    激光斑紋反差測量乳狀液顆粒大小
  6. The results can be summarized into the following aspects : molecular dynamics study of liquid - vapor interface shows that the planar liquid - vapor interface at macroscopic level is in fact a wavy surface fluctuating with time, and the length scale of the fluctuating region of the wavy surface is the thickness of the liquid - vapor interface. with speckle laser visualized experiment, the fluctuation of the interface can be verified qualitatively. moreover, md simulations indicate that in the liquid - vapor equilibrium system, there exists a local non - equilibrium region near the interface

    主要研究成果歸納如下：對汽液界面進行了分子動力學研究，揭示出宏觀尺度的平界面在分子尺度上是隨時間起伏漲落的曲分界面，分界面的漲落區域就是汽液界面的厚度，相應的激光散斑實驗也定性地證明了界面漲落區的存在；研究還發現在汽液平衡體系中，界面附近存在局域熱非平衡區域，並指出了其可能的原因及影響。
  7. The pd packaged in the laser diode can detect the signal of the self - mixing speckle interference and determine the motion state of the target

    封裝在半導體激光器另一側的光電二極體，檢測光學反饋生成的自混合散斑干涉信號，確定物體的狀態。
  8. Laser speckle interferometry was used as the experimental method to test the coefficient of thermal expansion ( cte ) of the metal composite leads used in the packaging structures and the thermal deformations of the entire packaging structures due to the change of temperature from room - temperature to 150oc

    通過實驗和數值模擬的方法對其熱變形和熱應力進行了研究。採用激光散斑干涉法測量了從室溫到150oc的封裝用金屬復合引線的熱膨脹系數和整個封裝結構的熱變形。
  9. Two methods of reducing the speckle noise and improving the depth resolution in optical 3d profilometry with laser sheet are proposed in the paper

    本文提出了兩種激光片光三維傳感中減小激光散斑影響，提高深度解析度的辦法。
  10. Math. and physics department, yanshan university, qinhuangdao 066004 ) [ / align ] [ align = left ] [ b ] abstract [ / b ] : through the pictures taken by means of laser speckle on the metal material weldment, we can obtain double - exposed displacement patterns at a temperature range. by point - to - point analysis heat displacement field at the welding points can be measured, and the distribution of thermal strain and thermal stress can be obtained. as a result, the flaws at welding points can be measured through experiments

    本文應用激光散斑法，其測量靈敏度介於全息干涉法和雲紋法之間，象所有其它散斑法一樣，它是一種非接觸式的測量技術，對環境及設備條件要求不高，對被測件表面不需進行特殊處理，可在生產現場對實際物體進行測試。
  11. Secondly, we focus on self - mixing speckle interference. lang - kobayashi rate equations are modified to obtain the output characteristics of laser diode under variable feedback conditions

    將移動的粗糙表面形成的外腔等價于隨機變化的反饋條件，修正lang ? kobayashi速率方程，得到變反饋條件下的半導體激光器的輸出。
  12. For the needs of researching a useful dial system, in this thesis, we studied a vast chinese and english literature and discussed the principle of dial system in detail. we analyzed the factor of influencing the accuracy and sensitivity of measurements, in special, discussed the influence of atmospheric turbulence and laser speckle

    為研製出有實用價值的dial系統，本文在參考大量國內外文獻的基礎上，對系統原理以及影響系統測量精度和靈敏度的各種因素進行了詳細討論，並且著重分析了大氣湍流和目標斑紋這兩個最重要因素對高脈沖能量的co2dial系統測量靈敏度的影響。
  13. When laser diode illuminates the rough surface moving transversally across the light beam, the feedback light forms the random speckle due to the random pattern of the target surface, causing random fluctuations in the laser output, which is called as self - mixing speckle interference

    結合自混合和散斑的原理，將散斑現象引入半導體激光器。讓半導體激光器的光學反饋來自垂直地照射的粗糙表面，把光強調製成為隨機的散斑信號。
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