The results are detailedly compared with those of commercial application using aspherical cylindrical lens.

對自聚焦光纖透鏡的原理進(jìn)行了分析，綜合考慮到自聚焦光纖透鏡的焦距和端面研磨的方便狠狠干天天碰天天色，確定了實(shí)驗(yàn)中自聚焦光纖透鏡的長度人人干人人操人人。

Based on the traits of the aspherical lens, the sunlight was focused on a very small spot, and then it was transferred into a plastic fiber by an aspherical lens and a selfoc lens. A formula for calculating the optimal length of selfoc lens is presented. The optimal assembly of the aspherical lens and selfoc lens was implemented by the aid of this formula. Therefore, sunlight is coupled into a plastic fiber efficiently.

根據(jù)非球面透鏡垂軸球差小的特點(diǎn)把太陽光會聚到很小的光點(diǎn)，再利用長度約為1/4節(jié)距的自聚焦透鏡改變光線的數(shù)值孔徑使其滿足光纖的數(shù)值孔徑干干干干干干射射，通過一個計(jì)算公式來計(jì)算最佳的自聚焦透鏡長度，實(shí)現(xiàn)非球面透鏡和自聚焦透鏡的最佳組合性感美女被操免费视频，把太陽光以較高的耦合效率耦合進(jìn)塑料光纖91黄色视频在线观看。

We put it across that the sign of nonlinear refractiveindex changes under certain conditions if the high-order excited state contributessignificantly to the refractive index.The nonlinearity changes from self-defocusing to self-focusing if the refrangibility of the ground state is larger thanthat of the first excited state and smaller than that of the second excited state.

高階激發(fā)態(tài)折射度貢獻(xiàn)較大時，非線性折射率符號在一定條件下存在轉(zhuǎn)化：如果基態(tài)折射度大于低階激發(fā)態(tài)的折射度而小于高階激發(fā)態(tài)折射度日韩精品免费乱码福利视频，材料發(fā)生自散焦—自聚焦轉(zhuǎn)化亚洲三级片在线网址；如果基態(tài)折射度小于低階激發(fā)態(tài)折射度大于高解階激發(fā)態(tài)折射度則發(fā)生自聚焦—自散焦轉(zhuǎn)化。

And images processed with the incorrect parameters will be worsened. This paper analyses the effect of SNR on autofocus and proposes an adaptive filter in SAR azimuth subsampling to keep SNR as high as possible, so that the performance of autofocus can be improved and higher image quality achieved.

該文分析了信噪比對自聚焦的影響91精品国产自产在线观看48页，提出利用自適應(yīng)濾波器來做方位向預(yù)濾波和降采樣亚洲国产一区二区av观看在线，在降低采樣率的同時，保持原始圖像的信噪比人人扣B人人干B视频免费播放，再經(jīng)有效的自動聚焦算法国产精品色在线播放，得到較準(zhǔn)確的多普勒參數(shù)估計(jì)值，從而獲取高分辨率SAR圖像国产精品福利一区。

Our main work is as follows: the stable laser mode theory in uniform plasmas is extended to non-uniform plasma cases; the discussion of the sufficient and necessary conditions for laser self-focusing in uniform plasmas is developed to non-uniform plasma cases; a quantitative approach to judge the impact of different plasma density distribution on laser self-focusing is proposed; the evolution properties of asymmetric laser filed in non-uniform and uniform plasmas are discussed and mechanisms that symmetric channel-like plasmas can confine the laser centroid around the plasma channel axes and symmetrize initially asymmetric laser beams are proposed; the formation of solitary standing wave in moderate plasma density is studied by PIC simulations and can be explained by stimulated Raman scattering of laser beams in plasmas.

主要工作為：把均勻等離子體中激光的穩(wěn)定模理論推廣到橫向非均勻等離子體情形日韩欧美精品视频在线观看_；把均勻等離子體中激光自聚焦的充分和必要條件的討論推廣到橫向非均勻等離子體情形；給出橫向密度分布不同的等離子體影響激光自聚焦的定量判據(jù)国产黄色网站在现免费观看。討論了初始不對稱的激光場在橫向非均勻及均勻等離子體中的演化特性免费黄色免费，并提出了具有對稱腔道結(jié)構(gòu)的等離子體箍縮激光質(zhì)心和對稱化初始不對稱激光場的物理機(jī)制。用粒子模擬討論了激光場在等離子體中形成孤立駐波的過程欧美精品强奸视频，認(rèn)為前向受激拉曼散射是發(fā)生此現(xiàn)象的可能機(jī)制www.youjizz.com.日本。

We use GRIN lens as collimating or focusing lens for transmission gas cell ,and a method that using cascaded GRINLens couple to increase the optical path length is presented. Using this method ,the detection sensitivity of the gas cell has been greatly increased.

利用自聚焦透鏡作為光纖準(zhǔn)直透鏡和聚焦透鏡，應(yīng)用于透射型氣室H片合集，并提出了在透射式氣室中將多對自聚焦透鏡組串聯(lián)用以增加吸收光程的方法免费一级在线视频播放，用該方法可以明顯提高氣室的檢測靈敏度。

This paper analyzed the advantage and disadvantage of three sound wave focus methods, that is lens focus, curved autofocus, and phased-array focus on the base of draw lessons from supersonic focus technic, consequently preferred and designed the infrasonic phased-array focus system.

文中在借鑒超聲波聚焦技術(shù)的基礎(chǔ)上手机一级在线视频，分析了透鏡聚焦性欧美精品久久久久、曲面自聚焦、相控陣聚焦等三種聲波聚焦方法的利與弊视频欧美日韩，從而選用和設(shè)計(jì)了次聲相控陣聚焦系統(tǒng)特黄真人免费AAA级毛片。

It is very important to reveal the characteristic of nonlinear small-scale self-focusing of broadband laser experimentally, and it is also of great theoretical and practical significance for the development of high-power laser system.

本文在利用解析和數(shù)值方法研究寬帶激光自聚焦規(guī)律的基礎(chǔ)上，通過搭建具體的實(shí)驗(yàn)平臺中文字幕av人妻一本二本，進(jìn)一步從實(shí)驗(yàn)上研究了寬帶激光小尺度自聚焦的動態(tài)傳輸過程女生一区二区三区视频网站。

Meanwhile the relativistic effect has also been considered, the result shows that it's different from the relativistic self-focusing of long laser pulse.

結(jié)果表明800av.com在线免费看，相對論效應(yīng)的計(jì)入雖然增加了體系的非線性度，但與長脈沖激光中的相對論自聚焦效應(yīng)不一樣的是亚洲欧美另类专区，它減弱了非線性效應(yīng)對自聚焦的影響18污视频网站在线免费观看。

The self-focusing properties, design, fabrication and diffraction properties of Varied Line-Space grating were investigated in detail.

利用變柵距光柵的衍射光束自聚焦特性，設(shè)計(jì)和制作了變柵距透射光柵绿巨人直播在线观看免费，并對其自聚焦特性進(jìn)行了研究美女裸体视频久久。

self-focusing optical fibre：自聚焦光覺纖維

self-focusing 自聚焦 | self-focusing optical fibre 自聚焦光覺纖維 | self-focusing threshold 自聚焦閾值

self-focusing optical fibre：自聚焦光纖

"織花","self-figured" | "自聚焦光纖","self-focusing optical fibre" | "含油軸承","selfoiling bearing"

Small-scale self-focusing：小尺度自聚焦

自聚焦透鏡:self-focusing lens | 小尺度自聚焦:small-scale self focusing | 靜電聚焦系統(tǒng):Electrostatics focusing system

Spatiotemporal instabilities：小尺度自聚焦

時空數(shù)據(jù)處理:Spatiotemporal Data Processing | 小尺度自聚焦:Spatiotemporal instabilities | 時空數(shù)據(jù)模型:spatiotemporal data model

self-focusing：自聚焦

self-focusedlaserbeam 自聚焦激光束 | self-focusing 自聚焦 | self-focusingopticalfibre 自聚焦光覺纖維

internal self-focusing：內(nèi)自聚焦

internal self-defocusing 內(nèi)自散焦 | internal self-focusing 內(nèi)自聚焦 | Internal standard 內(nèi)標(biāo)準(zhǔn)

self-focusing lens：自聚焦透鏡

self-focusing lens plate 自聚焦透鏡板 | self-focusing lens 自聚焦透鏡 | self-focusing optical fiber 自聚焦光纖

thermal self-focusing：熱自聚焦[過程]

thermal scattering 熱散射 | thermal self-focusing 熱自聚焦[過程] | thermal shift 熱漂移

thermal self-focusing：熱自聚焦

thermal self-action effect ==> 熱自作用效應(yīng) | thermal self-focusing ==> 熱自聚焦 | thermal sensibility ==> 熱靈敏性

steady-state self-focusing：穩(wěn)態(tài)自聚焦

steady-state pulse 穩(wěn)態(tài)脈沖 | steady-state self-focusing 穩(wěn)態(tài)自聚焦 | steady-state solution 透態(tài)解,定態(tài)解