腔長變化 的英文怎麼說
中文拼音 [qiāngzhǎngbiànhuà]
腔長變化
英文
variation of cavity length-
When u. unicinctus is exposed to sulfide for a long time, the relative amounts of hemoglobin, heme and hematin in the coelomic fluid change in regular patterns. the rna extracted from the coelomic fluid show that some genes express during that process
長期生活于含有硫化物的水體中,單環刺?體腔液中與血紅素相關的生化組分將隨時間延長而發生有規律的變化;從中提取的rna也顯示這一過程中伴隨著相應的基因表達。Therefore, the three fundamentals required to obtain high precise measurements are : 1 ) frequency stability and frequency difference stability of the double - frequency laser source as well as the stable equivalent length of bore ; 2 ) the measuring beam and the reference beam are placed very co - axially ; 3 ) capability of recording the sub - division of the period of phase change and a reversible counter system
因而干涉儀系統達到高精度的基礎是:頻率及頻差穩定的雙頻激光源、穩定的等效腔長;測量光與參考光合光後有很高同軸度的光路結構;能可靠記錄相位差變化周期數的細分及可逆計數系統三部分。Find the law of the influence from the injection pressure to the filling time and the cavity pressure and make certain of the best filling time, injection time and injection pressure. though the analysis of the flowing velocity and pressure spread of the key position element in the injection parts in different gate position, we forecast the injection parts quality and the possibility injection flaw and its position, optimize the gate position. in this paper, though the research of analogue of the runner system of metal - powder injection molding and the process of injection molding, we get the law of how the injection parameter influence the injection process
在相同的注射條件下,通過分析喂料在不同直徑和長度流道中的流動規律,得到了喂料在流道中的速度場、壓力場和溫度場,找到了流道長徑比的合理取值范圍,並得出通過改變流道設計可實現對現有設備資源充分利用的結論;給出了不同注射壓力下,型腔壓力與充模時間關系曲線和喂料熔體平均充填速度與充模時間關系的曲線,得到了注射壓力對充填時間和型腔壓力的影響規律,確定了最佳的充模時間、注射時間和注射壓力;通過分析採用不同位置澆口注射時注射件關鍵位置單元的流動速度和壓力分佈,預測了注射件的成形質量,或可能產生的注射缺陷及位置,優化了澆口設置。The influences of optical feedback and external cavity length on the laser output are studied, and the relation between fluctuations of speckle signal and the transverse velocity of rough surface is discussed
分析了隨機變化的反饋強度與外腔長度對激光光譜特性的影響。模擬了散斑干涉信號的波動與粗糙表面橫向移動速度的關系。In this paper, micro - cavity semiconductor laser ( mcsl ) with pillar vertical - cavity surface - emitting structure ( vcsel ) which has potential applications in optical communication and optical interconnect is theoretically analyzed, the calculation model that used to discuss the modal performance of rectangular columnar and cylinder vcsel with oxidized aperture is established by using vector field model. the numerical simulations in the case of cylinder structure show oscillating wavelength and threshold gain against inside and outside radius of laser, the layer refractive index and pair number of bragg mirror, thickness, position and oxidized material ' s refractive index of oxidized aperture, in detail. more practically, considering dos shell of laser as non - perfect one, or supposing that dos shell is separated from the laser, we can obtain more significative results
本工作以矢量場模型出發,對具有誘人應用前景的柱形垂直腔面發射結構( vcsel )的微腔半導體激光器( mcsl )進行了理論分析,建立了用於分析方柱形和圓柱形結構具有氧化孔徑層的激光器的模式特性的理論模型;對圓柱形結構情況進行了數值模擬,得到了振蕩波長、閾值增益隨激光器內外半徑、 bragg反射鏡層折射率、周期數以及氧化孔徑層厚度、位置和氧化物折射率的詳細變化規律;為使理論計算更接近實際,將外加金屬包殼視為非理想導體,或將金屬包殼與激光器結構隔開,分別對這兩種情況下的結果進行了討論。Some factors related to the trap potential and heating rate are considered, such as the laser detuning, the changing of cavity length, laser power of trapping beam, and the linewidth of laser. 7 ) an ultra - high finesse micro - cavity is established in our lab
6 )對超高精細度微腔內光學偶極阱進行了數值模擬,研究了光場失諧、腔長變化、功率、以及線寬等參數對腔內偶極阱的阱深以及加熱率的影響。4 ) the tuning characteristics of doubly - resonant optical parametric oscillator propo ) output by changing crystal ' s temperature, opo ' s cavity length and pump frequency respectively are theoretically analyzed and experimental obtained the wavelength of the opo output can be tuned from 2038nm to 2227nm by the crystal ' s temperature changed of 5. 3, from 2044nm to 2219nm by the cavity length changed of 514nm, and 375mhz by the pump frequency continuously tuned 750mhz
當晶體溫度變化5 . 3時,得到2038nm - 2227nm可調諧下轉換光輸出;當opo的腔長相對于簡並點腔長變化514nm時,得到2044nm - 2219nm可調諧下轉換光輸出:當泵浦光頻率連續的改變了750mhz時,下轉換光的頻率相應連續調諧375mhz 。理論擬合與實驗結果基本一致。On the basis of this, the effective reflective index with the variation of the carrier density is discussed. this paper also analyzed the random facet phase and the length of the cavity ' s influence on threshold characteristic. especially, the wavelength tuning characteristics have been investigated in detail when one segment works as absorbed region
在此基礎上,研究了每一段等效反射率譜曲線隨載流子濃度變化的情況;分析了邊界相位的不確定性以及激光器腔長對閾值特性的影響;重點討論了其中一段工作在吸收狀態下的波長調諧性質。In the part of the experimental designs, a experimental configuration of an unstable cavity by use of two bbo crystals compensating the walkoff effect and pumped by reflection is presented, and two set of controlling systems designs of open and closed loop are also presented ; we realized closed loop controlling system of bbo optical parametric oscillator tuning system, by using american general scanning inc. ' s controller to control bbo crystal ' s rotation, and scaled the output wavelength with charge coupled device
在實驗設計上給出了利用兩塊bbo晶體補償走離效應返回式泵浦非穩腔的實驗設計,設計了開環和閉環兩套控制系統。通過使用美國通用掃描公司的掃描頭控制bbo晶體的轉動,用ccd對bbo - opo輸出波長進行標定,實現了bbo - opo調諧系統的閉環控制,相對波長調諧誤差小於0 . 04 ,並給出了354 . 7nm泵浦的類相位匹配bbo - opo輸出波長隨晶體轉角變化的理論和實驗曲線。In order to investigate fiber morphological characters of poplar before and after pulp manufacture, the fiber length, fiber width, double wall thickness and lumen diameter of fiber of two kinds of poplar from different stand conditions were determined and analyzed
摘要為了探索制漿前後楊樹纖維形態的變化,對5個楊樹無性系在不同立地條件下的纖維長度、寬度、雙壁厚及腔徑進行了測定和分析。Based on the change of misalignment sensitivity with the length of cavity, a kind of ring - down cavity is put forward, which is stable resonator, and its cavity length is 0. 73 times as that of confocal cavity
摘要基於諧振腔失調靈敏度參量隨腔長的變化關系,提出了一種衰蕩腔,它是由共焦腔將腔長縮短為原來的0 . 73得到的穩定腔。In this work, based on the threshold condition of the fiber grating external cavity semiconductor laser ( fgesl ) which the phase of the fiber grating has been included, the effect of the temperature variation and the fg external cavity length on the lasing wavelength of the fgesl has been investigated theoretically. in addition, we have used the phase condition of fgesl to get the longitudinal mode distribution of fgesl, then the influence of the injected current on the output characteristics of fgesl has been studied
基於此,本文中利用陽實際的反射相位分佈,計及半導體激光器( ld ) 、外腔及光纖光柵( fg )三者的共同作用,根據fgesl滿足的閩值條件,從理論上研究了溫度及外腔長度的變化對fgesl激射波長的影響;根據fgesl中縱模所滿足的相位條件得到其縱模分佈后,利用fgesl滿足的多模速率方程,研究了ld的注入電流對fgesl輸出特性的影響。( 2 ) under certain temperature, for a short external cavity, a slight change of the external cavity length will result in an obvious variation of the lasing wavelength ; and for a long external cavity ( > 10cm ), the change of the external cavity length gives almost no effect on the lasing wavelength
當溫度保持一定時,對于短外腔,外腔長度的微小變化可以導致fgesl的激射波長產生顯著的變化;而對于長外腔(尤其當外腔長度大於10cm )時,外腔長度的變化對fgesl的激射波長基本沒有影響。Numerical simulations show that : ( 1 ) owing to the temperature variation resulting in the change of the refractive index of both the semiconductor medium and the fi ber, and further inducing the shift of the longitudinal modes of the fgesl, the lasing wavelength of the fgesl has a shift tendency to longer wavelengths with the increase of the temperature ; the mode hopping happens for a short external cavity and disappears for a long external cavity
數值模擬的結果表明:由於溫度變化造成半導體介質和光纖的折射率發生變化從而導致fgesl的縱模發生移動,因此fgesl的激射波長隨著溫度的升高將存在向長波長方向發生移動的趨勢,對于短外腔, fgesl的縱模間距較大,半導體介質折射率隨溫度的變化程度大於光纖折射率隨溫度的變化程度,因而存在模式跳躍現象;對于長外腔,由子fgesl的縱模間隔很小,因而不存在明顯的模式跳躍現象。分享友人