two-photon absorption 中文意思是什麼

two-photon absorption 解釋
雙光子吸收
  • two : n. （pl. twos）1. 兩人；兩個東西，一對。2. 二的記號。3. 兩點鐘。4. 兩歲。n. -ness
  • photon : n. 1. 【物理學】光子。2. 【醫學】見光度〈網膜照明單位〉。
  • absorption : n. 1. 吸收，合併。2. 專心，一心不亂，熱中 （in）。3. 〈口語〉飲食。
  1. Four donor - acceptor conjugated carbazole derivatives for two - photon absorption optics were designed and synthesized. the spectral characteristics and the structure - activity relationship were investigated

    摘要設計、合成了四個新的?唑類具有較大雙光子吸收截面的化合物，研究它們的光譜特性，對雙光子吸收的構效關系進行初步探索。
  2. 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。
  3. We analyze the influences of the perturbed energy - level space and superposion, laser power and intermediate level offset on quantum interference. experimentally, in the sodium dimmer rhomb - type four - level system with a pair of perturbed levels, the interference enhancement of two - photon absorption caused by coherent superposition of the perturbed levels is experimentally observed

    分析了微擾能級的間隔和疊加程度、激光功率以及中間能級的失諧對量子干涉效應的影響，實驗上觀察了包含有一對微擾疊加中間能級的菱形四能級系統中的雙光子激發現象，發現微擾能級的相干疊加可增強雙光子吸收。
  4. Using the semiclassical theory, we calculate the correction of the detuning to the absorption and dispersion, and we investigate the impact of the one - photon detuning under the exact two - photon resonance to large kerr nonlinearity and photon switching based eit

    我們利用半經典理論計算失諧量對吸收和色散的修正，分析雙光子共振條件下的單光子失諧量對基於eit的強kerr效應和光子開關行為的作用。
  5. In this thesis, we design a series of trans - stilbene derivatives and study their two - photon absorption properties by response and few states model. the work is done on dalton and gaussian - 98 program packs

    本論文中；我們選擇二苯乙烯系列衍生物作為研究對象，分別採用響應場方法和少態模型方法研究了它們的雙光子吸收性質，計算過程分別在dalton和gaussian
  6. At last, the structure - to - property is researched, we design a series of trans - stilbene derivatives with different arrangements of the substitutions and study their two - photon absorption properties by using the response theory method at hf level

    最後，本文選取了一系列不同官能團取代的具有不同對稱性的二苯乙烯系列衍生物，對其雙光子吸收截面與分子結構之間的關系進行了研究。
  7. The linear and nonlinear optical properties of these compounds have been systematically studied. the following parts are included in this thesis : one - photon and two - photon fluorescence ; upconversion superradiance and cavity lasing properties ; the optical power limiting effect of these compounds ; and so on. tpa absorption coefficients have been got by z - scan method

    3 、系統研究了它們的線性和非線性光學性質，主要包括：單、雙光子熒光，上轉換超輻射和腔激射性能及其效率，光限幅效應，用z - scan的方法得到了其雙光子吸收截面。
  8. Synthesis, characterization and the two - photon absorption of a new type of tetrathiomolybdate

    一種新型硫代鉬酸鹽的合成表徵及雙光子光譜研究
  9. Secondly, the third order nonlinear optical properties of these compounds are studied under the excitation of ps pulsed laser with the wavelength of 1064nm using z - scan technique, nonlinear refractive indices and nonlinear absorption coefficients are calculated according to the z - scan experiment curves of the compounds. all the three compounds have self defocusing characters and two photon absorptions. lastly, nonlinear refraction and absorption properties of these compounds are studied by z - scan technique under the excitation of ps pulsed laser with the wavelength of 532nm the self defocusing and reverse saturation absorption are found in these compounds

    根據實驗曲線計算了它們在1064nm下的三階非線性折射率和非線性吸收系數，三種化合物都具有自聚焦特性，並且在該波長下，三種化合物均具有雙光子吸收，最後，以皮秒脈沖的532nm為激發波長，採用z掃描方法，研究了三種金屬有機化合物的非線性折射和非線性吸收性質，在該波長下三種化合物仍然表現為自聚焦特性，且其吸收為反飽和吸收。
  10. In the first chapter, nonlinear optics and the research of two - photon absorption materials are introduced

    第一章主要介紹了非線性光學和雙光子吸收材料的研究現狀。
  11. Synthesis of 2 - 4 - substituphenyl - 4, 5 - bis 4 - methylphenyl imidazole derivatives and its photophysical characteristic of two - photon absorption

    三苯基咪唑類化合物的合成及其雙光子特性
  12. The charger - transferred processes of the charge - transferred states are displayed in order to understand their maximal two - photon absorption cross sections

    中心部分的特性有關。同時，我們還給出了分子電荷轉移態的電荷遷移過程。
  13. The results show that the solutions hardly change the structure of molecules, but have a significant effect on the two - photon absorption of molecules

    計算結果表明，溶劑對分子的幾何結構影響很小，但對分子的雙光子吸收有較大的影響。
  14. Furthermore, the upconvesion luminescence < wp = 8 > about 650nm and 808nm is also reached. they respectively belonged to three - photon and two - photon absorption

    另外，也對650nm波長和808nm波長的上轉換發光進行了研究，證明它們分別是三光子吸收和兩光子吸收過程。
  15. Because two - photon absorption ( tpa ) materials have good potential applications in medical, military and biology fields, they catch people ' s great attention

    由於雙光子特性材料在醫藥、軍事、生物等許多領域潛在著巨大的應用前景，引起了人們的廣泛關注和研究興趣。
  16. Numeric simulation showed that for the closed - aperture z - scan considering the two - photon absorption, the simulation results were well consistent with the conventional theory

    對于考慮雙光子吸收的河南大學光學專業2001級碩士論文閉孔z一掃描曲線，其結果與經典的z一掃描理論的結果也完全一致。
  17. The result indicates that, with the increase of polarity of the solvent, the excited energies are red - shifted and the two - photon absorption cross sections augment

    論文的研究結果表明：一般的，隨著溶劑極性的增加， tpa截面最大值處對應的入射光子的波長紅移， tpa截面最大值隨溶劑極性的增加而逐漸增大。
  18. 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。
  19. So, in order to explain the experimental results and design strong two - photon absorption molecules, solvent effects must be considered. new theoretical models for calculations of solvent effects must be developed. the solvent effects are carried out by the self - consistent reaction field theory with the polarizable continuum model in this work

    因此，為了解釋實驗結果和合成雙光子吸收特性強的分子，必須考慮溶劑的影響，這就需要人們發展新的理論模型來計算溶劑效應。
  20. Materials with strong two - photon absorption ( tpa ) are currently attracting considerable attention in the chemistry, photonics and biology communities because of their potential applications in optical power limiting, upconverted lasering, three - dimensional datastorage, nondestructiveimaging and photodynamic therapy

    強雙光子吸收材料由於在激光限幅、雙光子上轉換激射、三維信息存儲、生物體三維成像、光動力學治癌等方面具有誘人的應用前景，成為材料化學、光子學、生物學等領域的關注熱點。
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