up conversion 中文意思是什麼

up conversion 解釋
上變換
  • up : adv （superl uppermost ）1 向[在]上，向[在]上面；向[在]被認為處于上方的地方或方面〈如河流的源頭，...
  • conversion : n 1 變換，轉化，轉換；換算，換位。2 （意見、信仰等的）改變〈特指改信基督教〉；（車身，設備等的）...
  1. So people call this kind material as electron trapping infrared up - conversion and optical storage material, too

    故人們又根據其特性稱之為電子俘獲型紅外上轉換及光存儲材料（ etm ? electrontrappinginfraredup - conversionandopticalstoragematerials ） 。
  2. The main contents and important results of this paper are as following : strong blue cooperative up - conversion luminescence is observed in various host materials single doped yb3 + ions with naked eyes at room temperature under 980nm excitation. moreover there exist rich emission lines and peculiar ratio of luminescence intensity in all samples. intense green and blue up - converted luminescence is observed in yb3 + - ho3 + co - doped pbf2 - znf2 based materials with 930 nm diode light excitation at room temperature

    其主要內容與得到的結論如下： （ 1 ） yb ~ （ 3 + ）單摻雜不同基質材料組成的氟氧化物在980nm激光激發下發射出明亮的yb ~ （ 3 + ）離子的合作上轉換藍色熒光，同時這些樣品具有極為豐富的熒光發射，有著特別的色比關系。
  3. In the investigations of the nanosized zirconia powders co - doped with yb3 + - 0. 2 ( 0. 4, 1 ) mol % tm3 + ions under 980nm ld excitation, the blue up - conversion emission at 474nm comes from the 1g4 - 3h6 transition

    詳細研究了鉺離子摻雜二氧化鋯納米材料的上轉換發光性質，得到：在低摻雜濃度（不大於1mol ）下，鉺離子主要發綠光。
  4. 3. the thermal - mechanical and lasering properties of cr * : lisaf crystal were carefully studied. especially the up - conversion and the esa effect. all of these were given fully considered when design the three - mirror folded cavity tunable lisaf laser which was pumped by a accousto - optical active q - switched nd : yvo4 lbo intra - cavity frequency doubling 671nm laser

    在對cr ~ （ 3 - ） ： lisaf晶體的熱機械特性和激光特性詳細研究的基礎上，通過對折疊腔理論進行簡要介紹並由穩區計算，設計了三鏡折疊腔可調諧cr ~ （ 3 - ） ： lisaf激光器。
  5. In this paper, we study inversionless lasing of frequency up - conversion in an open v - type system with incoherent pump. making theoretical analysis and numerical calculation by density - matrix equations of motion, we derive the conditions for the onset of lwi and discuss the effects of the parameters of the system, the detuning of driving field and probe field on the gain, and discuss nonlinear effect in the frequency up - conversion regime. we also give stability and transient analysis

    本論文研究了具有非相干泵浦的開放v型系統頻率上轉換無粒子數反轉激光，利用密度矩陣運動方程，通過理論分析和數值計算，得出該系統產生無粒子數反轉激光的條件，討論系統各參數的變化和驅動場與探測場的失諧對激光增益、色散和粒子數差的影響，還討論了頻率上轉換區域的非線性效應，分析了增益的穩定性及系統的瞬態演化過程。
  6. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  7. It has some advantages other than inorganic materials, such as quick response, large electro - optical coefficient, wide transparence, simple manufacture, low cost and easy for integration, etc. some pyridinium salts with " d - - a " structure have very excellent tpa and up - conversion fluorescence properties, so they are the possible candidates to be used to make tpa up - conversion dye lasers

    這類材料具有響應速度快、電光系數大、透光波段寬、制備簡單、成本低廉、易於集成等優點。 「 d - - a 」型的吡啶鹽系列染料具有非常優秀的雙光子吸收和激光上轉換性能，是雙光子上轉換激光器的候選材料。
  8. By adopting single doped, co - doped or triple - doped ways after adjusting the ingredients of host materials, the author has obtained several up - conversion materials with highly blue and green up - conversion efficiency as well as characteristic luminescence lines and peculiar relations of ratio of luminescence intensities

    作者通過調整基質材料，採用單摻雜、雙摻雜和多摻雜、等方式，得到了幾種藍綠光上轉換效率高的上轉換發光材料，其熒光譜線較新穎，色比關系較特殊。
  9. We also experimentally observed the effect of sodium atom - molecular collisions and sodium atom - atom collisions on the line - shape and intensity of fluorescence spectra. in addition, the optically pumped infrared stimulated emission and energy transfer up - conversion process are observed in pr3 + : y2sio5, and with the threshold energy, temperature dependence and divergence angle for the stimulated radiation are measured

    此外還研究了摻雜在固體y _ 2sio _ 5中的pr ~ （ 3 + ）的光泵紅外受激輻射和能量轉移上轉換，分別測得了紅外受激輻射的閾值能量和發散角，並擬合得出了能量轉移速率。
  10. During the 1980s it became clear that two - photon pumped up - conversion organic materials might be a new choice for use in laser technology

    20世紀80年代，人們意識到雙光子上轉換材料也許是一個新的選擇。
  11. Transmit / receive ( t / r ) modules is the base of the modern radar. the paper puts forth a design scheme according to the target including t / r switch, up conversion, power amplified, low noise receive and down conversion. the dimension is restricted to 106 89mm through scheme comparison and the existing experiment condition, the final products arrive at the target we expect with millimeter hybrid integrated circuit

    收發t / r組件在當今雷達系統中佔有舉足輕重的地位，本文根據設計指標提出了毫米波前端的設計方案，系統功能上要求完成收發雙工、上變頻和功率放大、低噪聲放大和下變頻功能，外形尺寸為106 89mm ，通過綜合方案比較，結合自身條件，選取了毫米波混合集成電路形式。
  12. As a result, digital images usually suffer from aliasing due to undersampling, loss of high - frequency detail due to relative motion or out - of - focus. supperresolution involves up - conversion of the input sampling lattice as well as reducing or eliminating aliasing and bluring

    因此，通常數字圖像因欠采樣（ undersampling ）而引起的信號混疊，因低解析度傳感點擴散（ psf ： pointspreadfunction ）而造成的高頻部分、丟失，以及因相對運動或散焦造成的光學模糊等因素而受損。
  13. Log - log plot of the luminescence intensity versus pump power show that 480nm luminescence emission is induced by the cooperative up - conversion between two yb3 + ions

    功率變化的雙對數曲線表明480nm藍光為兩個yb ~ （ 3 + ）的合作敏化上轉換發光。
  14. As a new type optical storage material, it has momentous applied value in many aspects, such as super - condense and super - speed disc storage, image storage, information treatment, optical calculation, infrared detection, infrared up - conversion imaging, radiation dose measurement, etc. in this paper, we prepared cas : eu, sm srs : eu, sm and casrs : eu, sm materials with excellent optical storage properties by wet method prepared precursor and followed rare earth direct doped method in reduced atmosphere

    作為一類新型的光存儲材料，它在超高密、超高速光盤存儲、影像存儲、信息處理、光計算、紅外探測、紅外上轉換成像、輻射劑量測定等方面具有重大的應用價值。本文採用濕法制備前驅物、然後在還原氣氛下利用稀土直接摻雜法制備了具有良好光存儲性能的cas ： eu ， sm 、 srs ： eu ， sm及casrs ： eu ， sm光存儲材料。
  15. Furthermore, an enhanced up - conversion emission at 604nm induced by ultraviolet irradiation was observed for the nanosized zirconia powders doped with eu3 + ions. the relation between the enhanced fluorescence and the annealing temperature was investigated, and we found that the fluorescence increment decreased with increasing of the annealing temperature

    同時我們觀察到了eu ~ （ 3 + ）摻雜的二氧化鋯納米材料在紫外光照射下有熒光增強現象，研究了熒光增強幅度和樣品退火溫度及尺寸的關系，發現隨退火溫度的提高，樣品熒光增強的幅度變小。
  16. A study and comparison of up - conversion luminescence efficiency in four er3 yb3 co - doped glasses

    共摻四種玻璃中上轉換發光效率的比較及研究
  17. Analyzed the differences between the vector data transformation format ( abbreviation vct ) and mif, mid format. building up conversion model between them and realizing conversion between them by programming

    分析研究矢量數據交換格式與mapinfo外部交換格式的差異，建立這兩種格式的轉換模型並對轉換模型進行程序實現。
  18. The lifetime of particles co - doped with li + and na + increased as compared to that of un - doped one. however, the lifetime decreased as co - doped with other dopants. in addition, we also studied that ultraviolet ( uv ) light - induced spectral change in eu3 + - doped aluminosilicate glass and red to blue up - conversion emission of tm3 + -, yb3 + - doped y2o3 nanocrystals

    （ 2 ）在紫外光輻照下， eu ~ （ 3 + ）摻雜的氧化物玻璃電荷遷移帶強度降低，通過研究輻照與激光的功率密度、波長的關系，發現這種變化屬于單光子過程，並具有頻率選擇性。
  19. It has two following important properties : one is optical storage, that is, optical signals can be stored in trap electron form for long time, the other is infrared up - conversion, that is, it can convert infrared to visible light at room temperature

    其具有以下兩個重要特性： 1 ）光存儲：能將光信號以陷阱電子形勢長期穩定存儲； 2 ）紅外上轉換：室溫下可將紅外光轉換為可見光。
  20. Aiming at the present condition of stb video post - processing, analyze the video post - processing algorithms which include sampling conversion, de - interlace and frame rate up - conversion

    然後針對現行機頂盒視頻后處理現狀，分析了視頻后處理所採用的方法，包括采樣率轉換、去隔行、幀率提升等。
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