晶體光軸 的英文怎麼說
中文拼音 [jīngtǐguāngzhóu]
晶體光軸
英文
crystal optic axis- 晶 : Ⅰ形容詞(光亮) brilliant; glittering Ⅱ名詞1. (水晶) quartz; (rock) crystal 2. (晶體) any crystalline substance
- 體 : 體構詞成分。
- 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) ...
- 軸 : 軸Ⅰ名詞1. (圓柱形的零件) axle; shaft 2. (對稱部分的直線) axis 3. (圓柱形的纏繞器物) roller; spool Ⅱ量詞(用於纏在軸上的線以及裝裱帶軸子的字畫)
- 晶體 : [晶體學] crystal; vitrella; crystal body; crystalloid; x-tal
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The waves should be sheared waves for the anisotropic aeo device and longitudinal waves for the isotropic aeo device. geometrical relationships of anisotropic acousto - optic effect in ln crystal and kdp crystals are studied by tangent - match condition. curves of incident angle vs. abaxial angle, diffractive angle vs. abaxial angle, extreme frequency vs. abaxial angle and acousto - optic merit vs. incident angle vs. abaxial angle are systematically gained and the design parameters are also calculated
利用相切-匹配條件法研究了鈮酸鋰晶體及kdp晶體的反常聲光互作用幾何關系,系統地得到了以離軸角為自變量的各參數的計算公式及相應的關系曲線,通過數值分析方法給出了聲光優值隨中心頻率的變化曲線並給出了器件的設計參數。New calculation method of the optic axial angle of the biaxial crystal
雙軸晶體光軸角計算的新方法Crystals of this type, having only one optic axis, are called uniaxial crystals.
這種只有一根光軸的晶體稱為單軸晶體。The coefficients of reflection and transmission on the interface of two uniaxial crystals
光在兩單軸晶體分界面的反射與透射系數The coefficients of reflection and transmission on the interface of two uniaxial crystals under normal incidence
正入射條件下光在兩單軸晶體分界面的反射與透射系數Not only general suitability of this method is independent of gratings model, geometry structure, medium properly and crystal axis orientation ( including uniaxial crystals and biaxial ones ), but also physical concepts are clear and formula is concise
該方法不僅不受光柵模型、幾何結構、介質性質和晶體取向(包括單軸和雙軸晶體)的影響而具有普遍適用性,而且其物理概念清晰、公式簡潔。For the negative uniaxial crystal material, the principal mode is a hybrid guided mode, which can also be excited by the light at any frequency, but when the single mode propagation condition can not be satisfied, some of the higher order hybrid guided modes will exist in the waveguide
對于負單軸晶體,波導的主模是混合模hgm _ 0模,該模式同樣可被任何頻率的光波所激勵;當光波波長滿足一定條件時,波導內傳輸單模,否則,將激勵起高階混合模。The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes
本文就是在此背景下,利用金屬波導和單軸晶體的一些特性,結合麥克斯韋方程組和波導的邊界條件,從三種不同的情況研究了光在對稱平面單軸晶體金屬波導(波導層是單軸晶體,兩個波導界面均為金屬)內的傳輸特性,其主要貢獻為,首次解析地得到了這種波導結構下模式場的精確解,並發現了一些有用的特性: ( 1 )模式場的性質因單軸晶體的性質不同而異; ( 2 )當單軸晶體光軸位於波導界面法方向與傳輸方向構成的平面內時,波導中傳輸te波和tm波,只不過其主模因單軸晶體的性質不同而異,當波導層介質為負單軸晶體時,波導主模是te波主模,而波導層介質為正單軸晶體時波導主模是tm波主模。 ( 3 )當單軸晶體光軸位於波導面內時,對于正單軸晶體,波導的主模是橫電波te _ 0模,任何頻率的光波均可激勵該模式;當光波波長滿足一定條件時,波導內傳輸單模,否則,將激勵起高階模式,高階模即匪te波,也匪tm波,而是兩者耦合而成的混合模。This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up
全文共分八章,取得的主要成果及創新點如下: ( 1 )首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理,在考慮如下物理過程和參量的基礎上:光與物質的雙光子相互作用; stokes光的傍軸衍射; langevin (郎茲萬)噪聲源;晶體表面反射和端面反射;增益系數、光束口徑、脈寬和三倍頻光能量密度,推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。This paper derived the transfer matrix of the bilayer structure composed of left - handed and right - handed materials, and computed the density of states ( dos ) along the axis of the finite one - dimensional photonic crystal, which was constructed out of n such bilayer structures periodically
摘要推導出了由左右手材料構成的雙層結構的轉移矩陣,計算了由n個該雙層結構周期性排列所形成的一維有限長度光子晶體沿其軸線方向的態密度。The dissertation discussed the theories of second - harmonic generation for negative uniaxial optical crystal and summarized properties of nonlinear optical crystals, which are subjected to ultraviolet second - harmonic generation, and represented the theorizational law of double frequency crystal select ( tldfcs ). at present, bbo crystal is the most subjected to commercial crystal of ultraviolet second - harmonic generation according to compared kdp, bbo, clbo, kabo and kbbf crystals based on tldfcs
論述了負單軸晶體的倍頻理論,總結了適用於紫外倍頻的非線性光學晶體的特性,提出了倍頻晶體選擇的理論依據,並根據該依據通過比較,最後選定bbo晶體為目前最適宜用於產業化的紫外倍頻晶體。All my samples with good orientation are prepared by rf sputtering. then we invest surface morphology and crystal structure, optical and electrical properties of zno films by afm, xrd, hall testing, ultraviolet - visible spectrum photometer and xps et al. zno films are fabricated on gaas substrate
本文用射頻反應磁控濺射制備了高度c軸擇優取向的zno薄膜,採用原子力顯微鏡( afm ) 、 x射線( xrd ) 、 hall測試儀、紫外?可見分光光度計和x光電子能譜等分析測試手段,研究了樣品的表面形貌、晶體結構、光學和電學性能等。The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that kabo is a negative uniaxial optical crystal with moderate birefringence. the measurement of nonlinear optical coefficient dn = 0. 45pm / v
用最小偏離法測試了可見光區十二個波段處的晶體折射率,結果表明kabo晶體屬負單軸晶,具有適中的雙折射率。晶體的非線性光學性質測試顯示,該晶體非線性光學系數為d _ ( 11 ) = 0 . 45pm / v ,可實現相位匹配。We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s
根據能量動量守恆關系和clbo的色散方程,詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬,並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。Only appropriate field is applied, can planar waveguide be fabricated in sbn crystal
只有沿sbn晶體的c軸方向施加適當的外電場,才能寫入平面光波導。But for some special medium materials, such as liquid crystal display controller pcb, magnifiers must be used to gather images to gain enough precision of inspection for the weak contrast between the basic board and the conductor. the images near the light axes are much cleared than that far away from the light axes, so the images can not be simply segmented by black and white and inspected with the methods of pcb which are based on the black white image
但對於一些特殊介質材料,如液晶顯示控制電路板的檢測,由於基板和導體之間對比度不大,而且為了達到檢測精度,必須採用放大鏡頭進行圖像採集,成像系統光軸附近的圖像成像質量較好,而偏離光軸較遠的圖像質量較差。不能通過簡單二值化來很好地分割圖像,而已有的印刷電路板檢測方法都是建立在二值圖像進行分析的基礎上。In recent ten years, the great progress has been made in the application of the planar crystal waveguide polarizers in integrated optics, various suggestions have been made for the structures of such polarizers
近十年來,平面單軸晶體波導起偏器在集成光學中的取得了重大進步,不少學者已利用不同的方法獲得了起偏器。Zinc oxide ( zno ) is a wide band gap ( 3. 4ev ) semiconductor with the hexagonal crystal structure ( wurtzite type ). zno thin films with the c - axis orientation perpendicular to the substrate show excellent piezo - electrical properties and are widely used in piezo - electrical filed. and the dense anjd uniform surface of the films is required when zno thin films are used as integrated functional films
Zno屬於六方晶系6mm點群,晶體在c軸垂直面上的電性和彈性都是對稱的,因而c軸擇優取向的多晶薄膜能夠具有單晶那樣的壓電性和光電性質,而具有平整均勻的表面形貌則是zno薄膜作為一種集成功能薄膜應用性能的保證。The beam steering theory is studied to solve the problem that we can not get wider 3db bragg bandwidth and high diffraction efficiency at the same time in the optimum design of ln anisotropic acousto - optic deflector ( aod ) which is a crucial issue in the process to design an ao deflector. based upon the study of the unit cell structure of ln, the acoustic property and the optical property and the acousto - optic property are analyzed and presented
以最根本的鈮酸鋰晶體晶胞結構為出發點對鈮酸鋰晶體的聲學、光學以及聲光性質進行了推導和描述。並以此為基礎利用克里斯托夫方程計算鈮酸鋰晶體中分別在xoz與yoz聲光互作用平面上的本徵速度與聲離軸角之間的關系,並給出倒速度曲線。Having one direction along which double refraction of light does not take place. used of a crystal
單軸晶體的有一個方向的,沿此方向不發生光的雙折射。用於晶體分享友人