能量阱 的英文怎麼說
中文拼音 [néngliángjǐng]
能量阱
英文
energy trap-
If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g
如果通過激光冷卻能使原子速度降至很小甚至為零,光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處,其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小,因此,如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser
大功率半導體量子阱激光器是一種性能優越的發光器件,具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點,廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎,對器件的光學和電學性能有著重要的影響,生長不出優質的材料體系,獲得高性能的器件就無從談起,因此,材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。Fig. 3 and fig. 4 show that grooves in the width of 1 - 2micrometer on the surface of films sputtered at 180 forms optic trap of solar spectrum in the range of 0. 25 ~ 3micromete, and increase the absorption efficiency of solar radiation
在溫度約180的情況下的薄膜表面形貌,薄膜表面寬度為一兩個微米溝槽,形成了對0 . 25 ~ 3微米太陽光譜的光學陷阱,可提高太陽光譜范圍能量的吸收率。With results coming so thick and fast, it is no wonder that, as monroe says, “ many feel that ion traps are well ahead of other technology in the quest to build a large - scale quantum computer
看到這些能夠執行既多且快的成果,難怪門羅會說:很多人覺得,在建造大尺度的量子電腦上,離子阱比其他技術都先進多了。As the increasing of concentration, the host and guest interconverted, and the more the charge been transferred, the more the total energy decreased. finally, we deduce that the doping of rubrene in pvk just acting as traps in electroluminescent devices, and its trapping electrons arrested many cavities in pvk. and so, more pvk who did n ' t transport energy was concerned with trop and it makes less pvk was concerned with energy transfer in photoluminescent devices than in electroluminescent devices
基於光致發光和電致發光中pvk與rubrene發光強度的不同,我們對低摻雜時的電致發光和光致發光進行了比較,並提出:在電致發光中, rubrene的摻入在pvk鏈間相當于陷阱,其陷阱電子對pvk空穴的吸引,使一部分在光致發光中不參與能量傳遞的pvk參與了這種陷阱作用,使得在電致發光中不參與能量傳遞的pvk可能比光致發光中少。We creatively apply this way to the bounded polaron in the parabolic quantum well and get the analytical expressions of the ground state energy of an electron bound to a hydrogenic impurity in a parabolic quantum well in an electric field
我們開創性的把它應用到處理有拋物線量子阱中的束縛極化子,得到了有外電場的量子阱中,類氫雜質中的電子基態能量的解析結果。Using a simple variation - fitting method , the exciton binding energies of a sawtooth - shaped quantum well are calculated as a function of an electric field , and the explanation of the results is also given
採用一種變分擬合的簡單方法計算了電場下鋸齒型多量子阱的激子結合能,對計算結果給出了合理的解釋Gaas / algaas quantum well photodetectors ( qwips ) are new type devices and progressed rapidly in recent 20 years. qwips utilizing intersubband absorption between gallium arsenide ( gaas ) well and aluminum gallium arsenide ( alxga1 _ xas ) barriers were perfected. therefore, the ability to accurately control the band structure and hence the spectral response, as well as both established technology for growing and processing gaas optical devices and commercially available large area vlsi gaas ic ' s, makes gaas / algaas qwips attractive devices for use in very large focal plane arrays ( fpas ), especially available in the range of long wavelength 8 - 12 urn
Gaas algaas量子阱紅外探測器( qwips )是近二十年來迅速發展起來的一種新型紅外探測器,它成功地利用了gaas勢阱和al _ xga _ ( 1 - x ) as勢壘之間的子帶間吸收,使之具有能帶結構可精確設計從而獲得指定光譜響應的特點,加之成熟的材料生長技術、器件工藝,以及商業上可獲得大面積的vlsigaas集成電路,使得gaas algaasqwips尤其適宜製作8 12 m長波范圍的大面陣探測器。It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained
文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹,然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法,把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子,利用瞬子方法給出基態能級劈裂,最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子,從而給出由於熱助量子隧穿引起的激發態的隧穿率。Imaging and measurement system for advanced thermalanalysis
高性能量子阱紅外熱像儀To explain the low level balance trap, we must first make the variation " education " have changes, that is, insisting on developing education first and enhancing the functionalist value of education to economic social development
破解低水平均衡陷阱,必須首先使「教育」這一內生變量發生聚變,即堅持教育優先發展,提升教育對經濟社會發展的功能性價值。Extensive experimental and theoretical investigations of the behavior of energy levels of excitons in quantum wells in the presence of a magnetic field have been carried out during the past 20 years
無論從實驗上還是理論上,人們對于外加磁場的量子阱中激子的能級行為進行了廣泛的研究。After fully heat - exchanged inner individual processes, the further integration for heat sources and heat sinks of processes with utility system of steam - power cogeneration was made, including the balance between energy use and heat recovery, cogeneration of steam and power, optimization of steam levels, and synthesis of turbine networks
在實現各過程內部熱量交換的基礎上,進行各過程之間的剩餘熱阱和熱源與蒸汽動力系統的全局能量集成,包括廢熱回收、熱功聯產、蒸汽系統設計和透平網路綜合。Abstract : we conduct a theoretical study on the properties of a bound polaron in a quantum well under an electric field using linear combination operator and unitary transformation methods, which are valid in the whole range of electron - lo phonon coupling. the changing relations between the ground - state energy of the bound polaron in the quantum well and the coulomb bound potential, the electric field strength, and the well width are derived. the numerical results show that the ground - state energy increases with the increase of the electric field strength and the coulomb bound potential and decreases as the well width increases
文摘:採用線性組合算符及幺正變換方法研究了電場對量子阱弱耦合束縛極化子的性質的影響.推導出量子阱中束縛極化子的基態能量和庫侖束縛勢、電場和阱寬的變化關系.數值計算結果表明,基態能量因電場和庫侖束縛勢的不同而不同,隨電場和庫侖束縛勢的增大而增大,隨阱寬的增大而迅速減小The orientation state of the molecule can be described by angular momentum eigenstate of the molecule rotating around its long axis ; the state of the molecule center - of - mass can be described by energy eigenstate of the particle in the harmonic well potential
)和分子質心位矢( ? ) 。分子取向態可用分子繞長軸自轉角動量本徵態描述;分子質心態可用質點在諧振子勢阱中的能量本徵態來描述。3. to avoid the high temperature process in sige cmos technics, appropriate implantation energy and dose and rtp ( rapid thermal anneal ) are introduced into the the fabrication of sige cmos double - well and source
3 .研究了離子注入法形成sigehcmos的雙阱及源漏工藝。確定了注入的離子類型、劑量、能量等關鍵參數。The results of numerical calculation show that the ground - state energy changes with the coulomb bound potential, magnetic field and the well - width, which will increase with increasing magnetic field and decrease with increasing the coulomb bound potential and the well - width
通過數值計算結果表明:量子阱中束縛極化子的基態能量因振動頻率、庫侖束縛勢、磁場和阱寬的不同而不同,它隨振動頻率和磁場的增加而增大,隨庫侖束縛勢和阱寬的增大而減小。By the complicated mathematical calculating, we obtain the energy equation of charged excitons, from which we can determine the variational parameters a and, thus the complex energy of charged excitons can be calculated, and the binding energy and correlation energy of charged excitons can be obtained versus the quantum well width
通過復雜的數學推導得到帶電激子體系能量的數學表達式,對變分參數和變分可確定出變分參數和,從而得到體系能,進而計算出體系的束縛能和相關能隨阱寬的變化。The changing relations between the ground - state energy of the bound polaron in the quantum well and the coulomb bound potential, the electric field strength, and the well width are derived
推導出量子阱中束縛極化子的基態能量和庫侖束縛勢、電場和阱寬的變化關系。The numerical results show that the ground - state energy increases with the increase of the electric field strength and the coulomb bound potential and decreases as the well width increases
數值計算結果表明,基態能量因電場和庫侖束縛勢的不同而不同,隨電場和庫侖束縛勢的增大而增大,隨阱寬的增大而迅速減小。分享友人