photon intensity 中文意思是什麼
photon intensity
解釋
光子強度-
We have calculated one - and two - photon absorption cross sections of the lowest excited states of a series of molecules combined with benzene, stilben, thiophene as center attached with amine, diphenylamine, diethylamine as electron - donor and nitryl as electron - acceptor ; the effects of molecular length, n center and electron - donor on two - photon absorption cross sections have been studied and all calculations have been carried out using the density functional theory at an ab initio level. it is found that the molecular length and the one - photon absorption intensity are quite strongly c orrelated factors, and that a corresponding correlation for the two - photon absorption is decreasing. it is also found that a most crucial role for the two - photon absorption is played by the n center
我們分別以苯、二苯乙烯、噻吩為中心，氨基、二苯氨基和二乙氨基為電子給體，硝基為電子受體組合形成的分子為研究對象，在從頭計算的水平上用密度泛函理論計算了這些分子在低激發態下的單、雙光子吸收強度，重點研究了分子的長度、中心和給體的供電子能力對分子單、雙光子吸收的影響。研究結果表明，分子長度與單光子吸收強度之間有密切關系，而在雙光子吸收中這種關系較弱；中心在雙光子吸收中具有重要的作用；在中心和受體一定的情況下，增加給體的供電子能力，可提高雙光子吸收強度。 -
It has been shown that : with the increase of the kerr medium intensity parameter u, the rabi oscillation extent of the mean photon number decrease and the rabi oscillation frequency becomes rapid, the antibunching effect becomes strengthened ; with the increase of n, the interaction between the field and atoms gradually becomes weak, however, the interaction between the field and the kerr medium gradually becomes strengthened and happen in advance ; with the increase of the coupling constants of two atoms, the rabi oscillation extent of the mean photon number decrease and the rabi oscillation frequency becomes rapid too, the antibunching effect becomes weak
結果表明：隨著值的增加，光子統計演化曲線的rabi振蕩的幅度減小，振蕩頻率變快，系統的反聚束效應增強；隨著初始場強（ ? ）的增大，場與原子的相互作用逐漸減弱，而與介質的相互作用逐漸加強並提前發生。隨著原子間耦合系數g的增大，光子統計演化曲線的rabi振蕩的幅度減小且振蕩周期縮短，同時，系統的反聚束效應減弱。 -
It has been shown that whether resonant or non - resonant interaction system, the kerr effect weakens the coupling of the field - atom, shortens the cycle of quantum collapses and revivals of the atomic level occupation and makes the nonclassical correlation properties steady. kerr effects on the properties of the correlation, on the correlation intensity between the two - mode, on the photon - number distribution and on the bunching or antibunching effect of the two - mode su ( 1, 1 ) coherent states produce obviously different characters when it is changed the initial intensity of the light field. that is to say, kerr effect on the two interaction systems is accorded
數值計算結果表明：無論是共振還是非共振相互作用， kerr效應均使原子與光場的耦合減弱，原子布居的崩塌與復甦的周期縮短，光場的非經典相關的穩定性增強；在初始光場較弱和較強兩種情況下，類kerr介質對雙模su （ 1 ， 1 ）相干態場兩模間的相關性、相關程度以及光子的聚束與反聚束效應產生的作用均有明顯的區別，即kerr效應對系統在共振及非共振作用時的影響是一致的。 -
Finally, the atomic coherent population trapping is studied in a multilevel laser - induced continuum structure system including cascade two - photon processes by means of quasi - classical theory. the condition leading to the atomic coherent population trapping and the dark state are given explicitly. the effects of atomic initial state and the laser intensity on the populations distributed in the atomic bound states are discussed
我們還運用準經典理論研究了含級聯雙光子過程的多束縛態激光場誘導原子連續態結構系統中原子布居數的相干俘獲，給出了產生相干俘獲的條件及暗態的表達式，討論了原子初態和激光強度對原於布居數的影響，揭示了原子相干對穩定rydberg原子的重要作用。 -
Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field
文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質 -
In euv and soft x - ray band, the most often used detector is ion chamber with rare gas, from whose collective electrode we can directly calculate intensity of photon flux
在極紫外和軟x射線波段常用的探測器是稀有氣體電離室，可以通過電離室收集極的收集電流直接計算出光子流強度。 -
Abstract : by employing the concept of photon flux, the evolution of the phase and photon flux in the eigenmode state in three - wave mixing, and the requirements for the initial phase and photon flux in this state, are studied in the paper. a special state in which there are only exchanges of the photon flux but no phase variations in the three - wave mixing process is investigated. an all - optical switch based on the eigenmode pushpull nonlinear - optical - mirror is presented, and the properties of this all - optical switch are numerically calculated. the numerical results show that the performance stability is extremely good, and the intensity and phase of the output signal beams can be easily realized and controlled
文摘:利用光子流概念研究了三波混頻中本徵模狀態的相位和光子流的變化，以及該狀態對光波的初始相位和初始光子流的要求，研究了三波混頻中只有光子流的交換卻沒有相位變化的特殊狀態，提出了本徵模狀態推拉式非線性光環鏡的全光開關，並數值計算了這種全光開關的性能，數值結果表明，該光開關的性能穩定性好，並且易於實現和控制輸出信號光的光強及相位 -
In detail, one - photon detuning for large kerr nonlinearity and photon switching via eit should be far less than the product of the ratio of intensity of the coupling field to the intensity of the signal field, and the detuning or the decay rate of the additional transition
具體來說，單光子失諧量的取值范圍應遠小於禍合場和信號場的強度比與微擾躍遷的失諧量或者衰減速率之積。 -
Adopting the amendatory rate equation, the threshold of the micro - cavity has been studied and the conclusion is shown as following : if there is not non - radiation transition, the pump velocity just need to compensate the photon velocity escaped from the cavity, and the intensity of output light will direct ratio to the intensity of input light then we got a micro - cavity laser with no threshold
採用修正的速率方程對微腔激光器的閾值進行研究，得到如下結論：在沒有無輻射躍遷時，激光器的泵浦速率只需恰好補償光子向腔外的逃逸速率，輸出光強隨著輸入泵浦光強性線增加，實現所謂的「無閾值」激光器。 -
The intensity at the. irradiated site decreased linearly with the power density of the irradiation light. this means that the light - induced change is a one - photon process. irradiations at different wavelengths indicate that the spectral change is frequency - selective
暗恢復過程的研究表明，光輻照后光譜的強度有恢復到輻照前強度的趨勢，擬合發現存在兩個恢復常數，一個為2 . 5小時，另外一個特別長。 -
The simulation program has been implemented to simulate the procedure of hxmt detecting x - ray source. the simulation result has been used to analyze the overlay region in celestial sphere, the variation of photon current intensity and the variation of the angle between sun and orbit, which demonstrate the reason why to select a 550 km height and 43o inclination low earth orbit as hxmt ' s orbit
利用模擬程序，實現了模擬一個正在預研的天文衛星? ?硬x射線調制望遠鏡hxmt觀測x射線源的過程，分析了天球覆蓋、 hxmt接收的光子流強度的變化和太陽軌道面夾角的變化，說明了選取高度為550km ，傾角43o的近地圓軌道作為hxmt的運行軌道是合理的選擇。 -
With the intensity of laser increased a series of new phenomena appears, for example, multiple photon lonization ( mpi ), above threshold lonization ( ati ), tunnel lonization ( tl ), stable lonization ( si ) and so on
隨著激光強度的增加，會出現一系列的新現象，例如多光子電離，隧穿電離，閾上電離和穩定化電離等現象。 -
Full quanta theory was used in analysis the working principle of laser, educed the photon states of single pattern radiate in two energy - step system, and simulated the establishment of laser mode and statistical distribute of photon. according to elf consistent equations of rlg ; build the simulated program with labwindows / cvi and do some simulation experiments, the result of simulation matched the theory perfect perfectly and conform to the experiments, the locked - in and pattern competition coursed the periodic light intensity
在激光陀螺自洽場方程組的基礎上，運用labwindows / cvi軟體建立了靈活方便的激光陀螺模擬平臺，並進行模擬試驗，模擬試驗結果與理論分析很好的相符合，且能夠較好地說明陀螺試驗現象，即在閉鎖閾值附近，由於閉鎖效應和模競爭相互影響，使得激光腔中兩行波相互關聯，光強差隨時間呈周期性變化。 -
We also performed a nonlinear curve fitting to the intensity relation curve between pumped light and upconversion emission light, and knew that the upconversion luminescence belonged to three - photon absorption
通過對上轉換發光強度與泵浦源電流強度關系曲線的擬合，看到這種上轉換是三光子吸收過程，這與通過能級圖分析得到的結果相同。 -
Theoretical calculations can not only predict the two - photon absorption intensity but also provide guideline and help for synthesis of new materials with large tpa cross sections
利用理論模型不僅可以對分子的雙光子吸收強弱進行預測，還可以為實驗合成具有大雙光子吸收截面的分子提供重要的理論依據和指導。 -
Numerical simulation of signal intensity distribution in a two - photon three - dimensional storage system
雙光子光存儲掃描信號強度分佈的計算機模擬 -
Based on the above work, the optical absorption and photoluminescence ( pl ) properties of a - sinx : h films with different compositions are studied through ultraviolet - visible spectroscopy ( uv - vis ) and time - resolved photoluminescence ( tr - pl ), the dependence of pl intensity decay on emission photon energy is found, the luminescence mechanism of nanosilicon embedded in silicon nitride matrix is presented, finally, the effective approaches to improving the luminescence efficiency of a - sinx : h films are discussed
在此基礎上，通過紫外-可見光譜（ uv - vis ）技術，時間分辨光致發光譜技術研究了不同組分的富硅a - sin _ x ： h薄膜的光吸收和光輻射特性，得到了材料光致發光衰減和輻射光子能量之間的關系，提出了鑲嵌在氮化硅中的納米硅的發光機制，進而探討了提高納米硅薄膜發光效率的有效途徑。 -
The fundamental principle of this system is as follows. divide the incident beam into two beams, one of which passing through variable optical delay ( vod ), then combination of the two beams with the same amplitude and delay - superposition is sent to bi - photon detector and transformed into current signals, whose intensity is proportional to the intensity of bi - photon autocorrelation signals
本系統的主要原理是:把入射光分為兩束，讓其中一束光通過一個可調光纖延遲線，再把這兩束具有相同幅度並延時重合的光合路後送進雙光子探測器，該探測器同時吸收兩個光子發生雙光子效應從而產生電流信號，且其大小與雙光子自相關信號的強度成正比。 -
The results showed that : the ultraweak photon emission counts of each grain during grain - filling period appeared a curve with single apex, the count was maximum when the grain was completely filled in and the color of grain was from green to yellow ; the intensity of ube showed a downward trend ; it is possible to select good varieties of rice with stronger grain - filling ability if this technique is used, but more experiments is needed
實驗結果表明：在整個灌漿過程中單粒發光量呈單峰曲線，在籽粒全部充實並且顏色由青轉黃時，發光量最大；發光強度呈遞減趨勢；運用該技術有可能進行水稻不同品種間的比較和品種灌漿力強弱的篩選。 -
This indicated a rising tendency of ros content on the whole under salt and high photon intensity, and even a great increment after short time of treatment. so, suaeda salsa must have a high ability to scavenge ros in order to grow well under salt stress, otherwise the highly active ros would induce oxidative damage on the plants and inhibit its growth. now apx activity changed correspondingly
葉綠體中apx在整個細胞中佔有很大的比例，其中s apx可佔到整個細胞中可溶性apx的70以上；同時， s apx 、 t apx在葉綠體中基本上各佔一半，因而，一方面保證了光合膜上產生的hzoz原位清除，同時也能充分地清除基質中各種來源的h 。
分享友人