相光柵 的英文怎麼說
中文拼音 [xiāngguāngzhà]
相光柵
英文
phase grating-
To see the efficiency curve of a specific grating, and to compare similar gratings, click on the grating # in the far left column of the table above
要查閱指定光柵的效率曲線和比較相似光柵，點擊上表中的最左邊欄的光柵號。The design of dgwfs and the quadratically distorted diffraction gratings is introduced firstly in chapter 1. secondly, based on the prevenient algorithms, the phase retrieval for the novel dgwcs is discussed by comparison, also more analysis is made by examples in chapter 2
第二章在總結、研究和改進前人理論方法的基礎上，總結了適合光柵型波前曲率傳感器相位恢復的三種演算法，並作了詳細的理論推導、分析和舉例說明，完善了光柵波前曲率傳感器的相位恢復理論。Targets in the radar ppi have the main property of the little area, a few targets and irregular change of grey. so it is difficulty to detect and track the target. the study of the radar ppi is very few inland and abroad. with the development and implement of high resolution radar and high resolution raster display, target _ tracking and detecitng based on the radar ppi will be feasible. it ' s great excellence is to increase time accumulation compare with the detecting techenicial of the traditional radar
雷達ppi中目標的特點是面積小，目標或可能的目標多，灰度、形狀變化無明顯規律，所以檢測和跟蹤目標比較困難。基於雷達ppi的研究國內外甚少，隨著高解析度雷達和高分辨光柵顯示器的發展，基於ppi的雷達目標檢測和跟蹤成為可能。與傳統的雷達目標檢測技術相比，其潛在的優勢在於大大增加了信號的時間積累，因此有可能提高檢測性能。Now a very interesting time - resolved x - ray spectrometer, in which an transmission grating is coupled with a x - ray streak camera has been a x - ray spectrograph
目前通常採用透射光柵與條紋相機耦合的方式作為x射線譜儀。Based on an amplified spontaneous emission ( ase ) source, a ring - cavity fiber laser, in which sensor element acted as the reflector of the cavity, was achieved with high - signal noise ratio ( snr ) and high - power. it was demonstrated that the output power was maximum, when output coupler ratio of the coupler was seventy percent
實驗證實耦合器的輸出耦合比選為某一個最佳值70 ，當980nm泵光工作電流為50ma時，其輸出功率達3 . 5mw ，且輸出激光波長與作為反射鏡的光纖光柵中心波長相同。The compensative relations between the tilt angular errors and groove - width difference were obtained and the compensative methods were discussed
針對光柵拼接中的轉角誤差和光柵常數誤差，得到了誤差間的相互補償關系式，並對補償方式進行了討論。Then we turned in the input laser to observe the decline of phase conjugate reflectivity. measuring dark storage time, we found that the phase conjugate reflectivity declined to 50 % of steady - state value when photorefractive crystal was in dark condition for 30 minutes. even after 9 hours, there still existed remaining reflectivity, which could n ' t be measured by our detector
因而研究了晶體內位相共軛光柵存儲特性，即觀察位相共軛光柵形成后在黑暗條件下能存儲的時間，實驗結果得出位相共軛光柵在黑暗中30分鐘后，位相共軛反射率下降到原來的50 ，而在黑暗中9小時后，位相共軛光非常微弱，無法測出。Experimental results are reported on temporal instability of phase - conjugate beam in a self - pumped ce : batio3 phase conjugator at 532nm. dark decay behaviors of sppc gratings in ce : batio3 are studied, for the first time to our knowledge, by measuring the decay of sppc reflectivities at 532nm and 790nm wavelengths at room temperature
首次在實驗和理論上研究了自泵浦位相共軛光柵暗衰減的特性，與以往一深一淺兩個陷阱能級參與光折變過程不同的是，發現了兩個深陷阱能級同時參與了自泵浦位相共軛光柵的建立。In large dimension measurement techniques, on the two - dimensional optical microscopy work platform displacement signals collection, the introduction of raster feet to achieve large dimension measurements designed raster signal acquisition circuits, a collection of analytical studies of the key circuits, the corresponding solutions, and discussed work platform displacement signals, image data and the actual dimension ; meanwhile driving mechanism designed electrical circuit, laying the foundation for the measurement of two - dimensional work platform automatically
在超屏幕尺寸測量技術中，關於二維光學顯微工作臺位移信號採集，採用了光柵尺來實現超屏幕尺寸測量，設計了光柵信號採集電路，分析研究了採集電路中的關鍵性問題，提出相應的解決方案，並討論了工作臺位移信號、圖像數據與實際尺寸的關系;同時設計了電機驅動介面電路，為二維工作臺自動測量奠定基礎。4. make the ruling experiments for vls grating using the phase scanning method. analyze the ruling error primarily
4 、採用相位掃描方法進行了變柵距光柵的刻劃實驗，並對刻劃誤差進行了初步的分析。Since the space increment within nanometer or sub - nanometer is required, it is difficult to make it only by improving the precision of the graduation system. a phase scanning method for fabricating the vls grating is suggested initially in this dissertation
實驗結果表明，本文捉出的相位掃描方法原理正確，具有創新性，達到了變柵距光柵所要求的亞納米級的柵距變化精度。The spectral and group delay characteristics are studied and the potential uses of this type of grating for wavelength selection and dispersion compensation are discussed. a novel scheme of oadm configuration based on linearly chirped moir fiber gratings is proposed. we have designed a lcmfg to compensate dispersions for eight channels at the same time
在此基礎上，提出了一種新型的基於線性啁啾moir光纖光柵的光分插復用器（ oadm ）的結構設計方案；並設計出一種中心波長、相鄰中心波長間隔都符合itu規定的dwdm波長標準的基於線性啁啾moir光纖光柵的多通道色散補償器件。Several materials with large coefficient of expansion were selected to make packaging components, and it was found that the packaging materials have good temperature sensitivity and compatibility with optical fibers. experimental accuracy and repetition of fbg temperature sensitivity and compensation were discussed. have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber ; have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of fbg wave - length, have obtained the first step conclusion ; have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes
本文所做的主要工作包括以下幾個內容：一、選取了常見的熱膨脹系數大的材料製作封裝元件，經過多次一80到80反復測試，封裝元件沒有出現老化開裂、封裝裂紋、空洞、離層等缺陷，封裝材料具有良好的溫敏穩定性及復用性，與光纖相容性較好；二、對光纖光柵進行簡單、實用的封裝處理，就封裝效果的優劣性、波長測量的準確度、重復性和封裝時產生的波長損失等方面進行了一系列的實驗，得出了初步的結論；三、對溫敏和溫度補償式封裝的實驗數據進行了詳細的分析和對比，從數字上對溫變過程中光纖光柵中心波長的改變及溫變曲線進行了定量的分析，在大量實驗數據分析結果的基礎上，總結出哪種材料封裝效果更好，以及如何有效的減小實驗誤差。The polarization - dependent diffraction characteristics of the metallic echelle and the total internal reflection ( tir ) types of diffraction gratings are studied, and optimal design method based on the hybrid diffraction method is presented
針對目前衍射光柵器件在損耗、偏振敏感性等方面的不足，本文對金屬反射型以及內全反射型凹面光柵的偏振相關的衍射特性進行了矢量分析，並基於混合衍射方法提出了更為準確有效的優化設計方法。The vector diffraction theory analysis of chromatic dispersion characteristics of phase grating
位相光柵色散特性的矢量衍射理論分析A quick spectroscopic diagnostic system for the flame temperature is set up in this paper. it consists of an optic imaging system, a scanning system, a dispersive system, a photoelectricity conversion cell, operational amplifiers, a computer - based data collection system and a data processing. the temperature profile varying with the time can be quickly measured by this system
目前光學診斷由於其相應快、精度高，屬于非接觸式測量手段，在研究中得到越來越多的應用，這里要介紹的就是本文中建立的一套光學診斷系統，它由高壓燃燒室、旋鏡掃描儀、旋鏡控制器、小型光柵攝譜儀、光電轉換裝置，微弱信號放大器以及數據採集系統組成。In the height - calibrating method, after the calibration board is moved twice, the calibration matrix can be got from the relationship between the phase and the height of the calibration board
通過移動標定平面到兩個不同位置，得到標定位置處的光柵圖像，根據平面間的相位差和高度差得到高度標定矩陣。Study on the laser diffraction and interference field of a phase grating
一種位相光柵激光衍射干涉場的研究Computer simulation of real time variational beam feature of double deck rectangle phase grating
計算機模擬雙層矩形位相光柵的實時變分束特徵According to the different require of the phase mask, the holographic recording method for the design of linearly chirped phase mask is studied in this paper. the fringe formed by the interference of two spherical waves, whose density varies linearly with space, is used to record the chirped phase mask. the two design schemes proposed in this paper are analyzed and compared, and the experimental results are given
根據光纖光柵掩模的不同要求，研究討論了用全息干涉方法製作線性啁啾位相掩模的設計方法，提出用兩球面波干涉產生條紋密度隨空間距離線性變化的干涉條紋記錄啁啾位相光柵，分析比較了文中給出的兩種設計方案，給出了實驗驗證結果，並且製作了線性啁啾光刻膠掩模。分享友人