最大折光率 的英文怎麼說
中文拼音 [zuìdàzhéguānglǜ]
最大折光率
英文
maximum refractive indices-
A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water
本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。Effect of spherical particles relative refractive index on the most peak value of scattered light field intensity
球形粒子相對折射率對散射光場強度最大峰值分佈的影響The main work can be summed up as follows : firstly, we studied the thermal - field properties of vcsels, and analyzed the influences of current spreading, material parameters and operating conditions on the temperature distributions. secondly, we began with the electrode voltage and calculated the equipotential s distributions, compared the distributions of voltages and current densities in different depths of vcsels, and then studied the influences of the oxide - confining region with different position or thickness, and the different sizes of the gain - guided aperture and emitting window on the distributions of the injected current density, carrier concentration and temperature in the active region. thirdly, we realized the coupling of electricity, optical and thermal - fields, worked out the threshold voltage, calculated the distributions of the injected current density, carrier concentration and temperature under different offset voltages, and analyzed the impacts of temperature profile and carrier density on the refractive index, fermi levels and optical - field
具體工作可以概括如下：首先，研究了vcsel的熱場特性，分析了電流擴展，材料參數和工作條件對于溫度分佈的影響；其次，從電極電壓入手，計算出激光器中的等勢線分佈，並對不同深度處的電壓和電流分佈進行比較，研究了高阻區的不同位置和不同厚度、限制層和出射窗口半徑的大小對電流密度、載流子濃度和溫度分佈的影響；再次，實現了電、光、熱耦合，求出了閾值電壓，計算了不同偏置電壓下的電流密度分佈、載流子濃度分佈和熱場分佈，分析了溫度和載流子濃度變化對折射率、費米能級和光場的影響；最後，給出了考慮n - dbr和雙氧化限制層時激光器中的等勢線分佈，分析了n - dbr和雙氧化限制層對vcsel電流密度、載流子濃度、溫度和光場分佈的影響。Operating modes of ln one - dimension anisotropic aeo device and kdp two - dimension isotropic and anisotropic aeo device are determined. the principle to determine electro - optic operating mode is that the difference of two intrinsic diffractive index doesn ’ t contain nature birefringence and the acousto - optic operating mode should achieve a higher acousto - optic merit value to improve the efficiency
選擇電光工作模式時，以所選取的電光工作模式的兩個本徵模之差不含有自然雙折射量為最佳模式;選擇聲光工作模式時，以聲光優值盡可能大為原則，以便提高器件的衍射效率。Recent studies have shown that the quantum coherent population trapping, electromagnetically induced transparency, index enhancement without absorption, etc. these new effects have great potential for the control of the coherence properties of a medium, the production of high frequency lasers, the information storage and high precision measurements
最近的研究表明，原子相干產生很多新的效應，如相干布居捕獲、無反轉激光、折射率增強、電磁誘導透明、電磁誘導吸收等。這些新效應對光學介質相干性質的控制、高頻激光的產生、光信息存儲和高度測量等方面具有巨大的應用前景。Recent studies have shown that the quantum coherence and interference have led to a lot of new effects such as coherent population trapping, electromagnetically induced transparency, index enhancement without absorption, etc. these new effects have great potential for the control of the coherence properties of a medium, the production of high frequency lasers, the information storage and high precision measurements
最近的研究表明，原子相干產生許多新效應，如相干布居捕獲、無反轉激光、電磁誘導透明、折射率增強等。這些新效應對光學介質相干性質的控制、高頻激光的產生、光信息存儲和高度測量等方面具有巨大的應用前景。An attempt is made to use the filled function as the modified function approach to apply global optimization to optical thin film problems. it is proved successful when applied to problems such as antireflection coatings and beam spliters. meanwhile, it is also found that when the number of layers is fixed those local minima with less total optical thickness appear to be better. in the realization. needle method are made to explore the impact of local optimization methods used, parameter of these methods, the starting design, the search accuracy of function and the methods of thickness growth
從理論分析來看，由於光學薄膜的特性是由在入射介質那一側的等效導納所確定的， needle方法把等效導納作為狀態變量，把每一層的折射率作為控制變量，運用最優控制的原理計算出在薄膜內部每一個厚度對應的點上折射率改變所引起的評價函數的改變，由此選取改變折射率后評價函數變化最大（評價函數變小）的那一點進行插入。The best process for high quality tio _ ( 2 ) thin film deposited on k9 glass by reb is studied by using orthogonal test method, the se results indicate that the best process for tio _ ( 2 ) thin film deposition is the substrate temperature of 300, the total gas press in the chamber of 2 x 10 ~ 2pa and the deposition rate of 0. 2 nm - s - 1, of which the substrate temperature has influence on the optical properties of the deposited films notably
文中首先以tio _ 2薄膜的折射率和消光系數為研究對象，採用l9正交試驗法研究了在k9玻璃上制備高光學質量tio _ 2薄膜的最佳工藝條件。橢圓偏振儀的測試結果表明，制備tio _ 2薄膜的最佳工藝條件為：基片溫度300 ，工作真空2 10 ~ （ - 2 ） pa ，沉積速率0 . 2nm ? s ~ （ - 1 ） ，其中基片溫度對薄膜光學常數的影響最大，該結果具有較好的可重現性。分享友人