In 1961 they published the first carrier will be injected into the semiconductor PN junction to achieve the "injection laser" exposition and demonstration in the tunnel diodes as high as in Jane and the PN junction to achieve population inversion (which is Produced by stimulated emission of the necessary conditions for) the possibility, but also that active high-density areas around the most active carrier of the border areas on both sides of the refractive index of a difference, creating optical waveguide effect.

他們又于1961年最先公開發(fā)表將載流子注入半導(dǎo)體PN結(jié)以實(shí)現(xiàn)"注入激光器"的論述手机在线播放黄色网站视频，并論證了在如隧道二極管中那樣高度簡并的PN結(jié)中實(shí)現(xiàn)粒子數(shù)反轉(zhuǎn)(這是產(chǎn)生受激發(fā)射的必要條件)的可能性，而且還認(rèn)為有源區(qū)周圍高密度的多數(shù)載流子造成有源區(qū)邊界兩邊的折射率有一差值国产精品九一精品免费视频，因而產(chǎn)生光波導(dǎo)效應(yīng)玖玖资源站在线中文字幕。

Based on the method of minimum deviation angle, man can obtain the accuracy of measuring refractive index of glass at 3×10-6 with fine apparatus for measuring angle, but the classical princip1e formula quote...

計(jì)算表明，用經(jīng)典公式計(jì)算標(biāo)準(zhǔn)試樣折射率雖然對光學(xué)系統(tǒng)象差影響很小国模高清，但作為折射率基準(zhǔn)測量五月日日操，這樣大的原理公式誤差是不允許的。

Based on the measured refractive index distribution curve, according as the theoretical model of light transmission in the GRIN medium, using quadrivalent Runger-Kutta method to carry out the light tracking, by this means the mainly imaging character index of themicro-lens such as foci, longitudinal and transverse spherical aberrations aberration etc is calculated.i.

第五章 從測量所得折射率分布曲線出發(fā)美国一级AA大片免费观看，根據(jù)梯度介質(zhì)球內(nèi)光線傳輸?shù)睦碚撃Ｐ托陨罨粕悠蹬访溃盟碾Arunger-kutta方法進(jìn)行光線追跡，計(jì)算了此種梯度球的縱橫向球差等光學(xué)特性黄色视频高清免费无码，給出所制作梯度折射率微球透鏡成像性能的評價(jià)图片区小说区中文。

Via calculation we find the contribution of the frequency in the vapor term to the refractivity can not be neglected.

計(jì)算發(fā)現(xiàn)，水氣項(xiàng)中的頻率改正對折射率差的貢獻(xiàn)是不可忽略的毛片黄色黄片.COM。

Based on the theoretical model of the optical and near-infrared wavelength refractivity which is recommended by the International Union of Geodesy and Geophysics's resolution in 1999, as well as, theory of Mendes(2004), we rededuce some theoretical formulae and give the practical expressions of hydrostatic and non-hydrostatic components of the refractivity.

本文基于國際大地測量與地球物理聯(lián)合會(huì)1999決議推薦的光學(xué)和近紅外波段的大氣折射率差理論模型www.色色网站，在Mendes（2004）理論的基礎(chǔ)上，對某些理論公式進(jìn)行了重新推導(dǎo)91視频免费看，給出了大氣折射率差靜力學(xué)和非靜力學(xué)分量的實(shí)用表達(dá)式三级在线視頻。

Based on the Seidel sums formulae of thin lens, four types of NIM thin lenses free from partial primary aberrations are designed with specific parameters and given redundant aberration coefficients.

通過對單塊負(fù)折射率介質(zhì)薄透鏡的像差特性分析，我們提出了四種只有利用到負(fù)折射率介質(zhì)才具備的可消除部分初級像差的單塊薄透鏡系統(tǒng)AⅤ精品视频在线观看，并給出了相關(guān)的系統(tǒng)結(jié)構(gòu)參數(shù)和冗余的初級像差表達(dá)式亚洲三级片久久91。

To obtain precise result, itis necessary, in the aspect of hardware, to set up one stable optics system with highSNR, only if so, can we do the measurement with the steady NIR. To do so, we designthe optics system using AOTF, and take some measures to increase the light energyand the system SNR, which includes the three layers structure of the light chamber,the equipments to cover the useless light, polarizing to reduce the influence of 0 gradelight and focalize the light with lens. Apart from the hardware aspect, according to theexperiments, we can see that the different temperatures between at setting up themodels and at predicting the results will affect the prediction results in a way, and theaffection extent will be increased along with the increase of the temperaturedifference. Moreover, the light energy that can be detected will be different with thecontact pressure, and the match of the refractive indexes between the tissue and thesurroundings will enhance the light transmission depth, which will take moreinformation of the tissue. So, during the measurement, we should ensure the sametemperature between measuring and predicting, the same contact pressure at everymeasurement and the match of the indexes between the tissue and the surroundings aspossible as we can.

要提高測量精度，從硬件方面就必須有一個(gè)穩(wěn)定的99XXOO视频在线永久免费观看、信噪比較高的分光光路系統(tǒng)，以此得到穩(wěn)定的近紅外光來進(jìn)行無創(chuàng)檢測先峰资源网，針對這個(gè)目的另类小说另类图片视频一区，我們設(shè)計(jì)了 AOTF 分光光路系統(tǒng)wwwwxxxx.公共厕所，并在系統(tǒng)中采用一定的措施如三層燈室結(jié)構(gòu)、遮光筒以減小雜散光午夜在线视频、起偏和檢偏來減小 0 級光影響操日色、透鏡匯聚等等來提高出射光的能量和系統(tǒng)的信噪比；從其他影響因素方面一女被多少做做免费在线观看，通過實(shí)驗(yàn)yeyefuli无码视频，我們得到不同的建模溫度對于預(yù)測結(jié)果有一定的影響，且影響隨著溫度的差值越大而越大1314午夜精品理论片，另外散反射光譜的能量也隨著接觸壓力的不同而不同综合欧美在线，組織的折射率與環(huán)境匹配將加大光的入射深度，從而能攜帶更多的組織信息国产真实激情在线观看电影视频，所以在測量時(shí)我們盡可能保證同一溫度久久精品福利第一区、保證同一接觸壓力以及利用物理或者化學(xué)的方法使組織與環(huán)境折射率匹配等。

The phase tracking principle of source-contained homodyne detection is researched, the frame diagram for phase detection and experimental results are given.

介紹了一種新型的光纖電壓傳感器結(jié)構(gòu)和工作原理国产综合久久精品综合AV无码，分析了系統(tǒng)中橢圓芯雙模光纖的傳輸模式和模間相干光斑的變化在线观看春药毛片，采用熔接的方式進(jìn)行相干光接收來獲得正交相位漂移信號(hào)，根據(jù)模間群折射率差與光程差的關(guān)系設(shè)計(jì)調(diào)整光纖的長度91亚色视，依據(jù)石英晶體和空氣的絕緣強(qiáng)度進(jìn)行傳感光纖匝數(shù)設(shè)計(jì)黄色免费在线国产，討論了含源零差探測法的相位跟蹤原理，給出了相位檢測框架圖及實(shí)驗(yàn)結(jié)果欧美综合亚洲日韩精品区换脸，分析表明該設(shè)計(jì)方案能達(dá)到相位跟蹤的目的九九玖玖。

As a singlet curved lens is impossible to correct all the five primary aberrations regardless it is made of PIMs or NIMs, the primaxy-aberration-free lens systems composed of two thin lenses or two thick lenses based on the use of NIMs are intentionally presented.

由于只靠單塊曲面透鏡是無法同時(shí)消除全部五種初級像差的，因而我們接著研究了由負(fù)折射率介質(zhì)構(gòu)造的能同時(shí)消除全部五種初級單色像差的雙薄透鏡組合系統(tǒng)和雙厚透鏡組合系統(tǒng)色黄色网站。

On the special structure of the Lower Latitude Meridian Circle and the practice of determining astronomical refraction in Yunnan observatory,a new method for improving the correction accuracy of the atmo- spheric refraction delay is proposed:the determined data of the astronomical atmospheric refraction values with different azimuths are utilized to find the refractivity and the param- eters of mapping functions for modeling the atmospheric refraction delay correction,which changes with the observing stations and azimuths.

根據(jù)云南天文臺(tái)低緯子午環(huán)的特殊結(jié)構(gòu)无码国产在线呦呦，和測定大氣折射的實(shí)踐，提出了提高折射延遲改正精度的新方法在线观看精品自拍，即：利用各觀測站不同方位從天頂附近直到低地平高度角的天文大氣折射實(shí)測數(shù)據(jù)www.人人操人人操麻豆，求解得到折射率差和映射函數(shù)的參數(shù)，從而建立隨測站和隨方位而異的大氣折射延遲改正模型九九精品热全在这。