熱鏡效應 的英文怎麼說
中文拼音 [rèjìngxiàoyīng]
熱鏡效應
英文
thermal-lnesing effect-
In the paper we mainly researched space gainp2 / gaas / ge high efficiency tandem cells " making process by home - made low pressure mocvd technology and new solar concentrators. firstly, we presented reseached and development of solar cells in china and foreign countries ; secondly, on the basis of fundamental priciples and theories, we discussed some factors of influcing conversion efficiency of solar cells, and analysed the i - v output feature of two - junction tandem cells ; then the design concept of gainp2 / gaas / ge two - junction tandem cells was discussed, the detailed aspects of gainp2 / gaas / ge tandem cells epitaxy growth by low pressure mocvd was studied, and some questions on epitaxy growth ( such as crystal qualities, interface stress, element interdiffusion, n - and p - type doping et all ) were solved ; after that, the cell fabrication process was described ; finally, we reseached the hot pressing and mould process technology of an arched line - focus fresnel lens made by pmma, designed and fixed new solar concentrators
本文致力於用自製的低壓mocvd裝置進行cainp _ 2 / gaas / ge空間用高效級聯太陽能電池製作的工藝以及聚光太陽能電池組件的研究。首先，介紹了國內外太陽能電池的研究現狀及應用情況；其次，運用太陽能電池基本原理討論影響電池轉換效率的因素，分析了級聯電池的伏安特性；隨后，討論了cainp _ 2 / gaas / ge雙結級聯電池的結構設計理念，研究了採用低壓mocvd技術生長cainp _ 2 / gaas / ge級聯太陽電池材料的工藝過程，解決了異質材料生長的結晶質量、界面應力、材料互擴散以及材料n 、 p型摻雜等一系列問題；然後總結了級聯電池的后工藝製作；最後，研究了以pmma為材料的菲涅耳線聚焦透鏡的熱壓成型工藝及其模具的加工工藝，設計並安裝完成新型聚光太陽能電池組件。If a nd : yag laser runs at high pump power, laser resonator will generate multimode beam due to thermal lens of active rod. the higher pump power is, the bigger divergence occurs and the smaller rayleigh range is
當nd ： yag激光器工作在高泵浦功率下時，由於nd ： yag激光器工作物質的熱透鏡效應導致了諧振腔輸出多模激光，隨著泵浦功率的升高激光光束發散角增大，焦深減小。Introducing abcd theory, the laser mode was analyzed ; with thermal effect consideration, a short folded - cavity resonator which was not sensitive to thermal effect was designed. thus, the requirements for efficient doubling frequency were satisfied. 3
採用標準abcd傳輸矩陣理論，對激光器腔模式進行了詳細的分析，在充分考慮熱效應的前提下，根據實際情況，合理設計出對熱效應不敏感的三鏡折疊腔，產生兩個光腰，既滿足了泵浦光能量的充分利用，也滿足了縮小光腰提高倍頻效率的要求。Because of high threshold of 946 nm laser, severe thermal lens effect will appear when the 946 nm laser operations. in the consideration of thermal lens effect, the - optimized folding cavity has been devised. the relation between thermal lens effect and the radius of laser beam waist has been given as well
由於946nm激光閾值很高，需要更強的泵浦功率密度，因此較大功率藍光激光器的熱透鏡效應將會比紅光和綠光激光器更明顯，而熱透鏡效應是影響激光功率提高和激光輸出穩定性的重要原因，所以在考慮到激光晶體熱透鏡效應的情況下，優化設計了折疊腔結構，並給出了熱透鏡效應和折疊腔中腔模半徑大小的關系。When the laser beam interacts with the plasma, the effect of plasma on laser beam welding is mainly embodied, for example : the reflection, the scatter, the absorption, and the heat lens effect of the plasma acting on the laser beam and so on
等離子體對激光焊接物理過程及其質量的影響主要體現在等離子體與激光束之間的一系列相互作用上，如：等離子體對入射激光的反射、散射，等離子體對入射激光的負透鏡效應，等離子體對激光能量的吸收，等離子體的反沖力效應，等離子體熱源效應等。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。Ld - pumped nd : yag, lbo ( type - i critical phase matching ) intracavity frequency doubled, blue laser at 473nm was obtained finally. under the condition of 14w pump power, high power tem00 mode blue laser at 473nm of 1. 1w was obtained. by means of inserting diaphragm into cavity, the power fluctuation and beam mode were improved ; in the experiments, the proportion of special mode matching in quasi - three - level laser was discovered, and the phenomenon were explained reasonedly
實驗上採用對熱效應不敏感的三鏡折疊腔， ld泵浦nd : yag ，類相位匹配lbo作為倍頻晶體，獲得了1 . 1瓦的連續473mn藍光輸出；採用腔內插入光闌的方法，有效克服了功率抖動，同時改善了光斑模式；實驗中發現準三能級激光器存在兩個空間模式匹配比例關系，並對這一現象給出了合理的解釋。First, some principle that should be considered in building a laser cavity was discussed based on the rate equation of four - level laser model. then, the thermal lens effect of nd : yvo4 crystal was analyzed and estimated theoretically. the laser cavity was designed by considering the thermal lens effect and the optimal transmission was estimated
首先在理論上通過四能級激光器速率方程，討論了激光器設計上需要注意的一些原則，然後分析了nd ： yvo _ 4晶體的熱透鏡效應，理論上估算了其熱焦距的大小，並且在腔型設計中給予了考慮。But the absorption efficiency, stokes efficiency, quantum efficiency and the superposition efficiency between pump mode and cavity mode is less than one respectively, so the local heat absorption of the crystal is quite strong, and its thermal effect is quite obvious. two measures were taken
但是，由於量子效率小於1 ，斯托克斯頻移，泵浦光與基模的非完美空間重疊以及激光晶體的偏振吸收等因素積聚在晶體內的熱量隨泵浦輻射而變化，出現更為復雜和明顯的熱透鏡效應。The optimum position of focal spot of pumping laser through coupling system is calculated. in the fifth chapter, the optical characteristics of nd : yvo4 and lbo are studied. the astigmatism problem of resonant cavity is explored thoroughly under the condition of thermal lens effect
第五章分析了nd ： yvo _ 4和lbo晶體的光學特性，深入分析了在引入熱透鏡效應的情況下諧振腔的像散問題，設計了四鏡z型折疊腔，應用abcd定律計算優化選擇了一組腔參數。Study of sol - ton tramsmission and coupling in heat - lens effect of photorefactive crystal
光折變晶體熱透鏡效應中光孤子傳輸與耦合特性的研究Due to the special structure design and the utilizing of the low thermal expansion materials, the folded resonator of the unit is stable both mechanically and thermally
通過特殊的結構設計，使其具有機械和熱穩定性。對輸出窗口的熱透鏡效應進行了理論分析，並對其進行了部分補償。In the third chapter, the thermal lens effect of laser crystal is studied. the model of thermal lens theory and some measuring methods are explored. these methods are generalized and classified and the advantages and disadvantages of which are pointed out
第三章分析了激光晶體的熱透鏡效應，研究了熱透鏡理論模型和各種測量方法，對這些方法總結、歸類並指出了各自的優缺點。The experimental results show that the fiber phase conjugator can compensate for the beam distortion cased by thermal effects of amplifier and 60 % sbs reflectivity can be reached
實驗結果表明，光纖相位共軛鏡能很好補償放大器熱效應造成的光束畸變，在100hz時獲得近60的sbs反射率。分享友人