focal spot size 中文意思是什麼
focal spot size
解釋
焦點尺寸-
When a larger waist w of the incident gaussian beam and a shorter focal length / of the lens are chosen, we can obtain an extremely - small dark spot size of the focused hollow beam, even approach the diffraction limit
當選擇較大的入射準直高斯光束的束腰w _ 0和較短的薄透鏡焦距f時，可以在焦平面上產生一個很小的dss （或束半徑r _ 0 ） ，甚至可以接近衍射極限。 -
The relationship between wave - front aberration and focal spot size was researched roundly, and the essential connection between focal spot energy shape and wave front gradient distribution was discovered, and a smarter parameter to evaluate wave front aberration was founded. based on this, the wave front aberration tolerance confined by focal spot size requirement was obtained through calculation and statistics method. 2
比較全面地分析了系統內部波前誤差與光束焦斑尺寸之間的關系，找到了波前梯度分佈與焦斑能量分佈之間的本質聯系，提出了一個與焦斑尺寸關系最密切的波前誤差參數，並採用數值模擬和統計的方法得到了焦斑尺寸限制條件所要求的波前誤差限制條件； 2 -
5. otherwise, the applicability of cube comer array in the wide spectrum high power solid - state laser facility was researched as a relatively absolute part in this paper. through simulation, the action of cube corner array to reduce beam ' s focal spot size was testified visibly, and the smoothing effect of beam ' s modulation caused by cube corner array was proved primarily on the wide spectrum condition
另外，作為一部分相對獨立的內容，本文對寬頻帶激光傳輸條件下採用角錐棱鏡陣列抑制低頻波前畸變的設想進行了探索性的研究，通過模擬模擬驗證了角錐棱鏡陣列具有抑制低頻波前畸變、提高激光焦斑能量集中度的顯著作用，並初步驗證了寬頻帶激光傳輸條件下近場振幅高頻調制的勻滑效應。 -
Measurement of the effective focal spot size for industrial x - ray apparatus
工業用x光射線儀有效焦點尺寸的測量 -
From the fresnel diffraction equation, we calculated the intensity distribution of the fhb in free space, and found that there is an interested propagation property of the fhb before the focal plane. that is, with the increase of the propagation distance z, the dark spot size ( dss ) of the fhb is first increased, and then decreased, the dss has the maximum value at the position of z = - f / 2
發現在焦平面之前有一個非常有趣的傳播性質，即隨著傳播距離z的增加，這一聚焦中空光束的暗斑尺寸（ dss ）先從另變大然後再變小，最大的暗斑尺寸的位置在z = f / 2處。 -
To ensure the beam quality reach the requirement of high efficiency third harmonic conversion and small focal spot size, the correction of wave - front aberration had to be considered in the design of high power solid - state laser facility
在高功率固體激光系統總體設計中，為了使光束質量滿足高效率三倍頻和小孔進腔打靶的要求，必須對激光的波前畸變進行校正。 -
Due to the extremely - small dark spot size of the focused hollow beam in the focal plane, it can be used to form an atomic lens with a high resolution
由於這一聚焦中空光束在它的焦平面上具有很小的dss ，可以用來聚焦原子束以形成原子透鏡。 -
Non - destructive testing - characteristics of focal spots in industrial x - ray systems for use in non - destructive testing - measurement of the effective focal spot size of mini and micro focus x - ray tubes
無損檢驗.無損檢驗用工業x射線系統的焦點特性.小型和微型聚焦x射線管有效焦點尺寸測量 -
Non - destructive testing. characteristics of focal spots in industrial x - ray systems for use in non - destructive testing. part 5 : measurement of the effective focal spot size of mini and micro focus x - ray tubes
無損檢驗.無損檢驗用工業x射線系統中焦點的特性.第5部分:最小和最大聚焦x射線電子管的有效焦點尺寸的測量
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