picosecond 中文意思是什麼
音標 ['paikəˌsekənd]
picosecond
解釋
百萬分之一微秒-
Development of picosecond pulse radiolysis system at waseda university
早稻田大學皮秒脈沖輻解裝置 -
We apply the agrawal ' s theory model of soa, and study the temporal characteristics of the output pulse for input picosecond optical pulses with different sharpness edges passing through a semiconductor optical amplifier, and find that the peak power and the pulse width of the output pulse depend on the input pulse peak power, the sharpness degree of the input pulse edge and the bias current of soa
本文應用agrawal的關于soa理論模型，詳細研究了具有不同陡峭邊沿的皮秒超高斯光脈沖經soa后的時域特性的變化，發現輸出脈沖的峰值功率、脈沖寬度與輸入脈沖的峰值功率、輸入脈沖邊沿的陡峭程度以及soa的偏置電流密切相關。 -
Because the molecules in liquids are so densely packed together, the average time between collisions is a picosecond or less.
由於液體中的分子很密地積聚在一起，所以，兩次碰撞之間的平均時間間隔只有一微微秒或者更短些。 -
The ohio state chemists used a technique called transient absorption, which is based on the idea that molecules absorb light at specific waelengths, and allows them to study eents happening in less than a picosecond
俄勒岡州化學家採用一種技術名為」瞬時吸收「 ，原理基於不同分子吸收不同波長的光，使之能研究少於1皮秒所發生的反應。 -
The ohio state chemists used a technique called transient absorption, which is based on the idea that molecules absorb light at specific wavelengths, and allows them to study events happening in less than a picosecond
俄勒岡州化學家採用一種技術名為」瞬時吸收「 ，原理基於不同分子吸收不同波長的光，使之能研究少於1皮秒所發生的反應。 -
From the analytical point of view, with the aid of the numerical simulation, we investigate the propagation properties of optical pulses for the nonlinear schrodinger equation in picosecond regime, the higher - order nonlinear schrodinger equation in femtosecond regime, the nonlinear schrodinger equation with varying gain / loss and frequency chirping in homogeneous optical fibers, and ginzberg - landau equation that describes ultrashort pulses in the presence of self - frequency shift, respectively
本文從解析的角度出發，同時藉助各種微擾理論和數值分析方法，分別研究描述皮秒光脈沖傳輸的非線性薛定諤方程、飛秒光脈沖傳輸的高階非線性薛定諤方程、非均勻光纖中光脈沖傳輸的含有頻率啁啾和增益損耗項的非線性薛定諤方程以及描述超短光脈沖傳輸的ginzberg - landau方程的解的特性，為進一步實現超高速、大容量的光信息傳輸提供一定的理論依據。 -
Three shaped profiles ( parabola, linear, and exponential ) have been considered. the exponential dispersion profile fiber loop is optimal for the propagation and compression of picosecond pulse. on the contrary, the parabola dispersion profile fiber loop is optimal for femtosecond pulse due to the high order effects such as the third order dispersion ( tod ), stimulated raman scattering ( srs ) and self steeping ( ss )
（ 3 ）研究不同色散遞減類型（拋物線遞減、線性遞減、指數遞減）光纖構成的環形腔中傳輸的特性，發現其色散曲線為指數遞減型光纖有利於皮秒光脈沖的傳輸與壓縮；而對于飛秒脈沖，由於三階色散（ tod ） 、脈沖拉曼自散射（ srs ）及自變陡（ ss ）等高階非線性效應的影響，情況恰恰相反；色散曲線為拋物線遞減型的光纖構成的光纖環最有利於脈沖傳輸與壓縮。 -
From three - wave coupling equations, the optimal crystal length, conversion efficiency and parametric light pulse width are computed numerically when clbo is used in picosecond optical parametric amplification. the results present that clbo are suited for optical parametric amplification in short wave band. in order to get higher conversion efficiency, the crystal length should be optimized according to the intensities of pump and signal waves
從三波耦合方程出發，對clbo用於皮秒級光參量放大時，最佳晶體長度、轉換效率和參量光的脈沖寬度進行了理論分析和數值模擬，結果表明clbo晶體適合在短波范圍作光參量放大，為達到高的轉換效率和窄脈寬的信號光輸出，泵浦光和初始入射信號光的強度應根據晶體長度取最優化值。 -
Picosecond soliton compression in the fibers with slowly decreasing dispersion
色散緩變光纖中皮秒孤子脈沖的壓縮 -
Effect of initial chirp on soliton - effect picosecond pulse compression in optical fibers
初始啁啾對皮秒脈沖孤子效應壓縮的影響 -
A method to improve the quality of soliton - effect compression of picosecond pulse in loss fibers
一種改善損耗光纖中皮秒脈沖孤子效應壓縮效果的方法 -
Effects of initial chirp and fiber loss on soliton - effect picosecond pulse compression in optical fibers
初始啁啾和光纖損耗對皮秒脈沖孤子效應壓縮的影響 -
The effect of various gain coefficient on soliton - effect picosecond pulse compression in fibers with slowly decreasing dispersion
色散緩變光纖中增益系數的取值對皮秒脈沖孤子效應壓縮的影響 -
The faster decays on the hundreds of the femtosecond time scale and the slower decays on the order of picosecond are found
實驗發現兩個超快動力學過程：飛秒量級的快速弛豫過程和皮秒量級的慢速弛豫過程。 -
Besides, we will continue strive for the higher fields of ultraviolet, femtosecond, picosecond laser and so on. surely we will be on top in china and will try to be top - class in the world
另外，我們還將向紫外激光、飛秒及皮秒激光等高端領域不斷進取，永保國內領先，爭創世界一流。 -
In the picosecond and femtosecond time field, the durations of the pump and signal pulses are so short that special propagating characteristics of ultrashort pulse laser should be taken into account, especially the pulse broadening induced by the group velocity mismatch and the group velocity dispersion
在皮秒和飛秒時域，由於泵浦光與產生的信號光的持續時間特別短，故在討論超短脈沖與物質相互作用時必須計及超短脈沖在介質中傳輸的特殊性質，尤其是群速失配與群速色散引起的脈沖展寬。 -
The interaction between femtosecond dark solitons is similar to that of the picosecond dark solitons. they are more stable than the bright solitons and have only little repulsive force between them. furthermore, the numerical results show that the interaction of femtosecond dark solitons agree with the empirical expression of picosecond dark solitons for the separation of two solitons as a function of initial separation and traveling distance in a certain range
數值研究的結果表明：飛秒亮孤子間的相互作用不同於皮秒亮孤子，後者表現為周期性的離合，而前者在經過第一次吸引碰撞后便相互排斥離去，不具有周期性；飛秒暗孤子間的相互作用與皮秒暗孤子基本相同，它們比亮孤子更加穩定，只有微小的排斥作用，同樣也不具有周期性。 -
They obsered the most common chemical reaction among a family of reactions on the dna molecule that are linked to sunburn, and discoered that this key reaction happens with astounding speed - - in less than one picosecond, or one millionth of one millionth of a second
他們觀察到發生被曬傷的dna分子上發生系列反應中最普遍的化學反應，並且發現這種反應速度驚人?至少以每皮秒或者每秒百萬分之一的速度。 -
They observed the most common chemical reaction among a family of reactions on the dna molecule that are linked to sunburn, and discovered that this key reaction happens with astounding speed - - in less than one picosecond, or one millionth of one millionth of a second
他們觀察到發生被曬傷的dna分子上發生系列反應中最普遍的化學反應，並且發現這種反應速度驚人?至少以每皮秒或者每秒百萬分之一的速度。 -
Its intrinsic switching time is very short ; on the order of a picosecond. perhaps even more important is the low power dissipation ; superconducting circuits dissipate on the order of a microwatt per gate, a thousand times less than cmos circuits
這種數字電子技術具有高速、低功耗的特點，使用基於rsfq技術的邏輯電路的時鐘頻率可達到幾百個ghz ，而功耗只有0 . 3微瓦門。
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