模耦合激光器 的英文怎麼說
中文拼音 [móǒugějīguāngqì]
模耦合激光器
英文
mode coupled laser- 模 : 模名詞1. (模子) mould; pattern; matrix 2. (姓氏) a surname
- 耦 : Ⅰ動詞[書面語] (兩人並耕) plough side by sideⅡ名詞1 (古農具名) plough2 [書面語] (兩人一組) a...
- 合 : 合量詞(容量單位) ge, a unit of dry measure for grain (=1 decilitre)
- 激 : Ⅰ動詞1 (水因受到阻礙或震蕩而向上涌) swash; surge; dash 2 (冷水突然刺激身體使得病) fall ill fr...
- 光 : Ⅰ名詞1 (照耀在物體上、使人能看見物體的一種物質) light; ray 2 (景物) scenery 3 (光彩; 榮譽) ...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 耦合 : [物理學] coupling; interconnection; catena; linkage; linking
- 激光器 : [光學] (光激射器) laser (縮自 light amplification by stimulated emission of radiation); optic...
- 激光 : [物理學] laser 激光靶 laser target; 激光報警器 laser avoidance device; 激光玻璃纖維 laser fibre; ...
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This paper analyses the coupling wastage in columniform wave guide gas laser, and gives the function between the coupling wastage of laser guide modulo eh11 and the position and radius of reflector
摘要分析了圓柱形波導氣體激光器中的耦合損耗,給出了最低階波導模eh11的耦合損耗與反射鏡位置、曲率半徑的函數關系。As to the simulation, three - dimensional n - s equations and two - phase flow model, in which the liquid toluene spray as discrete particles was considered, were employed to describe the turbulent combustion processes in the combustion chamber. the mass and energy transfer between the two phases were calculated by the droplet evaporation model, and the arrehnius model was used to obtain the gas chemical reaction rate. the details of 3d flow field, the distributions of temperature and compounds were obtained by solving the equations
數值模擬方面,應用三維湍流n - s方程以及顆粒軌道模型描述了激光器燃燒室內部的噴霧兩相燃燒流動過程,兩相之間的質量、能量交換由液滴蒸發模型計算,氣相化學反應速率由arrhnius公式計算,通過耦合求解氣液兩相模型方程,模擬了燃燒室三維流場,得到了燃燒室內的溫度和組分濃度分佈。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd : yag激光器的發展狀況、主要特性及其應用,從四能級速率方程出發,推導了ld泵浦nd : yag激光器的閾值、輸出功率和斜效率的表達式,並簡述了激光器的工作原理、結構型式和倍頻方法;其次,以空間相關的速率方程為基礎,提出了ld端面泵浦nd : yag激光器的設計方法,給出了一定泵浦耦合方式下,振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據,以此為依據,設計了自聚焦透鏡耦合小功率ld泵浦nd : yag激光器和透鏡組耦合高功率ld泵浦nd : yag激光器,對激光器的輸出功率和功率穩定性等特性進行了實驗研究;再次,在帶尾纖輸出的高功率ld泵浦nd : yag激光腔內插入一隻空液晶盒,觀察到了激光器以單縱模運轉;最後,根據泵浦光焦斑端面位置對激光輸出功率的影響規律,提出了ld端面泵浦nd : yag激光位移傳感新方法,並進行了理論和實驗研究,研究結果表明:當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時,激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律,測量范圍和靈敏度依賴于泵浦功率,隨著泵浦功率的增加,測量范圍擴大,靈敏度提高,當端面泵浦功率為7 . 24w (最大輸出功率為1 . 926w )時,激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。Working on laser diode fiber - coupling modules was summed up, they are, setting up the model of far - field distribution of laser array and the far - field characteristics of difference structures ; designing the temperature - controlled laser diode fiber modules, that has been used as a laser system with temperature - controlled and fiber - output ; realization with high - brightness laser diode fiber - coupling modules ; the fiber ' s application in the field of high power laser
總結了自己在光纖耦合輸出激光二極體模塊方面所做的一些工作,建立了半導體激光器列陣遠場光束分佈模型,並結合具體參數分析了不同結構的激光器列陣的光束遠場分佈特性,可以知道我們設計和優化激光器列陣的結構。設計並製作了光纖耦合模塊的溫度控制系統,並製作成溫控光纖輸出激光器半導體系統投入使用。On the base of studying imaging theory of lens, the imaging theory of laser confocal scanning microscopy was analyzed in detail in this paper, and the advancement of that the optical fiber was applied to the system was described ; on the base of completed the demonstration for whole project, the experiment scheme was designed ; the relationship between the main parameters of key devices and the resolution was deduced, and the requirements of coupling efficiency and vignetting effects to optical system was analyzed ; the design of optical system and the planar scanning controlling circuit was completed ; a new method was put forward to resolved the inherent non - liner scanning problem of the galvanometer scanner by using software liner controlling in circuit design, and the perfect planar scanning was realized ; at last the low noise, high multiple and non - distortion amplify circuit of photoelectric detector was completed
本文在透鏡成像理論的基礎上,系統、深入地分析了共焦掃描顯微成像的機理,論述了應用單模光纖的激光共焦掃描顯微成像系統的優點;進行了總體方案的論證,並設計確定了單模光纖激光共焦掃描顯微成像系統的總體方案;從理論上推導分析了解析度要求與試驗系統中相關器件主要參數之間的關系,分析了系統耦合效率和漸暈現象對光學系統的設計要求;完成了方案中光學系統和二維掃描控制電路的設計,並在電路設計中採用了用軟體解決檢流計式光學掃描器(振鏡)非線性問題的新方法,能夠實現較為理想的二維模擬掃描;完成了高增益、低噪聲和低失真的探測接收系統的設計和調試。First the mechanism how the imaging guided missile works is revealed secondly the atmospheric propagation of laser beam is studied thirdly the structure and damage mechanism of irccd is analyzed, finally we utilize the dynamic generating system to simulate the cdricm
通過對成像制導導彈工作原理的分析,激光傳輸中遇到的各種大氣效應和紅外電荷耦合器件( irccd )激光干擾機理的分析,闡明了cdircm系統干擾成像制導導彈的機理,並利用動態場景生成系統對cdircm干擾進行了模擬。Second, the mode fields of a strip waveguide and some slab waveguides have been simulated by applying finite - difference time - domain ( fdtd ) method. the curvature radius ; vicinity coupling ; transition loss and power attenuation of a s - shape bend waveguide have been analysed numerically by employing wide angle finite - difference beam propagation method ( fd - bpm ), as well as the coupling loss of optical fiber and waveguide. in addition, the framework of the s - shape waveguide laser has been
其次,應用時域有限差分法,結合波導模式理論對條形與平面波導進行了模場模擬;應用廣角有限差分光束傳播法,對s形彎曲波導的曲率半徑、鄰近耦合、過渡損耗、功率衰減以及波導與光纖的各種耦合損耗進行了數值分析,並在此基礎上,對s形波導激光器的結構作了初步設計。Therefore, for 980nm pumping, a significant disadvantage is the low coupling efficiency to the single mode fiber because of the mold field mismatch between the elliptical laser beam and the circularly symmetrical fiber mode and also because of the phase mismatch
但是對于像980nm泵浦激光器發出的激光來說,由於特殊的物理結構,使得激光光束具有高度的橢圓性。對于橢圓度高的激光光束和單模光纖耦合的報道不是很多。This dissertation emphasizes on the study of fiber bragg grating ( fbg ) based programmable oadm and multiwavelength erbium - doped fiber lasers, and includes the detail descriptions on the following subjects : 1. the spectra characteristics of both the single mode fiber bragg grating and the hi - birefringence fiber bragg grating are analyzed and simulated with coupled - mode theory
本論文以基於光纖光柵的可編程oadm和多波長摻鉺光纖激光器作為主要研究對象,進行了以下研究工作: 1 .利用耦合模理論分別對光纖布喇格光柵和雙折射光纖布喇格光柵的光譜特性進行了分析和計算機模擬。For the coupling between the laser diode and the tapered single - mode fiber, the overlap integral is used to compute the coupling efficiency on the basis that the laser diode outputting mode field and the fiber eigenmode field is approximated to basic - mode gauss field. and based on the same approximation, the coupling efficiency between the semi - tapered fiber and the laser diode is calculated by using the ray - traced method. the parameters are analyzed for the effect on the coupling efficiency and give the theory foundation to optimize the design of the tapered fiber coupling system
首先通過對半導體激光器輸出模式場和光纖本徵模式場的高斯基模近似,利用交疊積分計算了錐形單模光纖與激光器的耦合效率問題;其次依據以上近似,利用光線跡蹤法計算了半錐形多模光纖與激光器的耦合效率問題,給出各個參數對耦合效率的影響和作用,為優化設計錐形光纖耦合系統提供了理論依據。Using field coupling theory, the coupling efficiency of ld at different fiber inclined surface is discussed, and experimental results are presented too
摘要應用場耦合方法模擬計算了不同光纖斜端面角度下半導體激光器的耦合效率,並進行了實驗測量。In this paper, a three - dimensional ( 3d ) program for the three - dimensional reactive flow fields of complicated geometric nozzle, which governed by the compressible full navier - stokes equations with realizable k - s turbulent model, has been upbuilt by using full implicit couple arithmetic and fvm ( finite volume method ) based on understanding and assimilation of a two - dimensional program group of cr ( chamber - radon ). the new program fulfils the urgent need of numerical tools for simulating three - dimensional reactive flow - fields of hylte ( hypersonic low temperature ) and other latest nozzles, for which cr is out of action in simulation, and can be applied to simulate other chemical laser system, such as chemical oxygen iodine laser ( coil ), overtone fluoride hydrogen, all - gas iodine laser, and so on. furthermore, some related topics about nozzles design and engineer ing also have been discussed
本文在二維cr ( chamber ? radon )程序研究的基礎上,採用有限體積方法和完全隱式的耦合演算法,通過求解帶realizablek -兩方程湍流模型的多組分、有反應的三維完全納維埃?斯托克斯( n ? s )控制方程,建立了一套能夠對復雜形狀的三維噴管和光腔進行數值模擬的三維程序,解決了連續波df hf化學激光器增益發生器設計缺乏三維數值模擬工具的問題,並用該工具解決了cr程序無法實現的hylte等復雜三維噴管流場的理論模擬問題。The theoretical investigation of the coupling efficiency of a laser diode to a single mode fiber via a hemispherical lens on the tip of the tapered fiber in the presence of possible transverse offset and angular mismatch is reported
摘要介紹了一種用於半導體激光器單模光纖耦合的圓錐端半球透鏡的耦合效率的理論計算。Abstract : the theoretical investigation of the coupling efficiency of a laser diode to a single mode fiber via a hemispherical lens on the tip of the tapered fiber in the presence of possible transverse offset and angular mismatch is reported. without the misalignment, coupling efficiency increases with the decreasing of taper length. with the misalignment, this relation is that the coupling efficiency decreases with each kind of offset
文摘:介紹了一種用於半導體激光器-單模光纖耦合的圓錐端半球透鏡的耦合效率的理論計算.失配不存在時,耦合效率隨著錐長的增加而減小.失配存在時耦合效率隨軸向和角向失配的增大而減小The direction of my thesis is creating a new type coherent coupling diode laser array with high optical quality by bidirectional coupling with optical fiber array. thus the welding quality and welding speed can be improved. in my research experiments, the cylinder fiber lens is used as a coupling lens system firstly
本課題首先使用柱透鏡耦合方案作為雙向耦合的先行方案,使用光學設計軟體模擬半導體激光器的光斑在經過光纖柱透鏡后的整形變化,指導了使用光纖柱透鏡進行大功率半導體激光器列陣與光纖密排陣列耦合的方法。The binary optical elements are small, light, easy to be copied and able to realize multi - purpose integrated, especially suits for the beam shaping of laser diode array, thus make us choose it for realizing our system. because single module gaussian beam can be decomposed in a pair of vertical directions, we transform each pair of vertical beams outputted by bars separately, this can make our design easy to achieve
可實現多功能集成等特點,特別適用於半導體激光器列陣的光束整形,因此我們選用二元光學器件來實現耦合系統?利用半導體激光器輸出的基模高斯光束可分離變量的特點,我們對面陣中各吧的兩個相互垂直方向上的光束分別進行整形變換,這樣整形器件可以設計成一維結構,便於實現In the experiments, experiments about 980nm pump laser and cylindrical lensed fiber coupling have been done. in order to broaden the application, some experiments about the coupling of 1310 nm laser and 1550 nm laser with spherical lensed fiber have been done
本論文在研究980nm激光器與契形柱透鏡光纖耦合的同時,為將這種模型推廣,進一步的研究了1310nm激光器和1550nm激光器與錐形球透鏡光纖的耦合情況。Through analyzing constitute and mechanism of high power laser diode ( ld ) fiber coupling module, the effects on reliability of ld fiber coupling module are detailed as following : crafts of coupling and encapsulation, electricity factors and ld itself
摘要文章從高功率半導體激光器光纖耦合模塊的組成和各個部分的機理出發,詳細分析了影響其可靠性的因素,主要有以下三個方面:激光器自身的因素、耦合封裝工藝和電學因素。Coupling from ld to smf is a key technology in the field of optical communication and photoelectric instrument. almost all of optic - fiber systems involve with the coupling question
半導體激光器到單模光纖的耦合是光纖通信、光電子器件領域的一項關鍵技術,幾乎所有的光纖系統都涉及到光纖端面耦合的問題。The experimental results in these studies have been reported for lasers with either circular or near circular ( elliptical ratio close to 1 ) beam profiles
如何提高激光器和單模光纖之間的耦合效率4 , 5 , 6 , ,最近已經有了相關的報道。分享友人