衍射極大 的英文怎麼說
中文拼音 [yǎnshèjídà]
衍射極大
英文
diffraction maximum-
The preliminary conclusion shows that the maximum rate of compression ratio changes is about 2 % and the change rate is less when the peak - to - valley value of wavefront aberration is less than a quarter of wavelength and incident angle is properly
脈沖壓縮光柵對系統達到衍射極限時，在選擇適當的入射角度時，光柵波像差所引起的脈沖壓縮比變化並不大。A fundamental limit is imposed by the size of the diffraction disk of the telescope.
一個基本的極限是由望遠鏡衍射園面的大小決定的。A series of experiments were conducted to research on electrode according to the principle of energy - storage materials, electroly tes, preparation techniques with the aids of the measure methods such as cyclic voltammetric measurements ( cv ), constant charge / discharge measurements, impedance spectrum, x - rays diffraction ( xrd ), transmission electronic microscope measurements ( tem ), and so on
本文採用了循環伏安、恆電流充放電、交流阻抗、 x射線衍射、透射電子顯微鏡等實驗方法和測試手段對超大容量電容器的電極活性物質材料及電極製作工藝、電解質溶液的選取等問題展開了一系列研究。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 resolution of optical system can not reach its diffraction limit because of the phase aberrations caused by atmospheric turbulence and other wavefront errors. adaptive optics technology uses deformable mirrors to perform dynamic phase modulation and endow optical system the ability to decrease the influence of dynamic wavefront errors
大氣湍流等動態干擾使光波面相位發生畸變，使光學系統的解析度無法達到其衍射極限，而自適應光學系統使用變形鏡對光波面進行動態相位調制，賦予了光學系統能動可變的能力而有效地解決了動態干擾的問題。Based on the scalar diffraction theory and the boundary condition of rayleigh - sommerfeld, the accurate on - axis propagating wave function of plane wave diffracted by small circular band is obtained by solving the first integral of rayleigh - sommerfeld
摘要從標量衍射理論出發，採用瑞利索末菲衍射邊界條件，通過求解第一類瑞利索末菲衍射積分得到平面波經圓環衍射后軸上的波函數，進而分析軸上的光強特性以及光強極值數量、位置和大小與衍射圓環內外孔徑的關系。This in turn leads up to asking the question of exactly how large is the diffraction limited field of view
反過來，又引出一個新的問題，衍射極限的視角到底有多大？It showed that better crystal films could formed when sintered between 350 ~ 550 for 3 hours. with the increasing of temperature and the extending of time, the diffraction apices became stronger and the crystal became bigger
薄膜電極的燒結工藝研究結果表明，當燒結溫度在350 ~ 550燒結時間為3h時得到結晶良好的limn2o4薄膜，隨著溫度的升高，衍射峰越來越明顯，晶粒越來越大。This paper studies cretaceous volcanics distribution, rock types, tectonic setting and reservoir characteristics in the western depression of liaohe fault depression through statistics of compound logging data, core observation, thin section identification, cathodeluiminescence, scanning electron microscope, x - ray diffraction analysis, image analysis, rock chemical analysis, isotope age testing, and inclusions temperature testing
摘要通過全區綜合錄井資料的統計、大量的巖心觀察，並利用薄片鑒定、陰極發光、掃描電鏡、 x衍射分析、圖像分析、巖石化學分析、同位素年齡測定、包裹體溫度測定等10餘種方法，對遼河斷陷西部凹陷白堊紀火山巖分佈、巖石類型、巖石系列、形成的構造背景及儲層特徵進行了研究。The design results and the performance evaluation of f - theta200 and f - theta500 are given in detail. the designed lenses are simple and compact and their cost are low. the focusing performances are within diffraction limit, the relative illuminations quite uniform and the distortion relative to the f - theta linear relation small
詳細給出了f - theta200和f - theta500的像質評價和研製結果，所研製的f - theta鏡頭具有工作面積大、結構簡單緊湊、加工成本較低、聚焦性能達到衍射極限、工作面上相對照度分佈均勻、能量集中度高和畸變小等優點。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。Based on the rate - equation theory of four - level system, the expressions of threshold pump power, output power and slope efficiency are given. the influence of space distribution of pump light ( the position of focusing point, dimension of pumping light and divergence angle ) to the output characteristics are also discussed. then, by investigating the effects of thermal effect of laser crystal on the size of laser cavity mode, we obtain the mode - matching principle of high power laser diode end - pumped solid - state lasers
其中，在泵浦光的空間分佈變量中我們分別考慮了泵浦光聚焦后的腰斑大小、聚焦腰斑在增益介質中的位置以及泵浦光在介質中發散角的影響；然後我們研究了在高泵浦功率下激光晶體因吸收泵浦光而產生的熱效應所導致的熱透鏡效應以及熱致衍射損耗，通過分析它們對振蕩激光腔模尺寸的影響，得到了高功率半導體激光二極體端面泵浦固體激光器模式匹配的要求，為高功率連續單頻nd ： yvo _ 4激光器的優化設計提供了理論依據。The tuning curve of type - i phase matching of bbo opo are measured with accuracy ; the maximum conversation in total of the system is about 31 % at 615. 6 nm, and it is fitted well with the gtp formula ; in the end we compared the output linewidth and unstable cavity far field beam qua lity of the bbo opo under the condition of type - i phase matching and type - ii phase matching, it is proved that we can obtain the parametric output of linewidth less than 0. 3 nm and the beam divergence angle approaching diffraction limits by take the advantages of type - ii phase matching and unstable cavity designs
測量了該系統的轉換效率最大為31 ，並能與理論公式極好地吻合，最後比較了在類相位匹配條件下和類相位匹配條件下的bbo - opo的輸出線寬，以及非穩腔的遠場光束質量，實驗結果表明，利用類相位匹配以及非摘要穩腔設計可以獲得線寬小於0 3nlm 、光束發散角接近衍射極限的參量光輸出。2. the chosen nanometer cacoj particles have been tested and analyzed through advanced instruments. 1 ) the crystal structure and average size of the nanometer cacos particles have been tested by rotatory anode harrow x - ray diffractometer
2 、採用先進的儀器對所選擇的納米碳酸鈣粒子進行了測定： （ 1 ）使用旋轉陽極靶多晶x射線衍射儀測定其晶體結構和平均粒徑大小。Under the same beam parameters, the intensity gradient near the mirror surface of the blue - detune sfgb is the nearly same as that of the sgb, but the intensity distribution of the fgb is a constant within a larger radial range, the width of the sfgb mirror will far greater than one of the sgb mirror
類似地，半束蘭失諧平頂高斯光束反射鏡和sgb反射鏡相比在yoz平面上的衍射強度梯度是近似相同的，也就是說在入射光束參數相同的條件下，在上述二種反射鏡表面附近入射原子受到的光偶極排斥力大小是近似相同的。Interferometirc lithographic technology incorporates laser, interference optics, diffraction optics and optical lithography and it is a frontier research subject in microfabrication technology and microelectronic field sponserd by national natural science foundation of china. the research for this technology in theory, simulation and experiments has important scientific meanings and broad application prospect for promoting lithographic limit, developing nanometer electronic and photoelectron devices, novel large screen panel display and novel lithographic equipment of our country
干涉光刻技術集激光、干涉和衍射光學及光學光刻於一體，是國家自然科學基金資助的微細加工技術和微電子領域的前沿研究課題，對其進行理論、模擬和實驗研究，對推進光學光刻極限，發展我國納米微電子和光電子器件、新型大屏幕平板顯示器和新型光刻機具有重要的科學意義和廣闊的應用前景。分享友人