自發輻射 的英文怎麼說
中文拼音 [zìfāfúshè]
自發輻射
英文
spontaneous activity emission-
Effect of amplified spontaneous emission in heaven - i pre - amplifier
天光一號預放大器中的放大自發輻射效應Amplified spontaneous emission
放大的自發輻射However, in the pulse application fields, the output pulse energy from single mode fiber lasers or amplifiers is limited by amplified spontaneous emission ( ase ), nonlinear effect and facet damage
在脈沖激光應用領域中，這類小芯徑光纖放大器和激光器的輸出脈沖能量受限於自發輻射放大、非線性效應以及光纖的端面損傷。The amplified spontaneous emission ( ase ) is studied. both the forward and backward ase is simulated and their characters are analyzed in detail. then the dual stage cascade structure is presented as a solution to reduce the ase noise
2 .研究了edfa中放大的自發輻射噪聲光（ ase ） ，詳細分析了前後向ase噪聲光的性質，在此基礎上，提出了雙段級聯結構抑制ase噪聲光，並對這種方法進行了理論和實驗研究。In the two - photon resonance case, part of the input pulse energy is transformed into higher and lower frequency components through amplified spontaneous emission and four - wave mixing, and the medium shows strong optical power limiting effect
在雙光子共振情況下，即入射脈沖頻率等於1 、 3能級之間的共振頻率的一半，由於介質中放大的自發輻射和四波混頻的作用，部分入射脈沖能量轉化為高頻和低頻電場成分的能量，分子介質表現出了很強的光功率限幅特性。Spontaneous emission can be totally suppressed or strongly enhanced depending on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density. several novel phenomena can be obtained. the spontaneous emission displays an oscillatory behavior, classical light localization, photon - atom bound state, nonzero steady - state population and anomalously large vacuum rabi splitting. and localized mode associated with a defect site in an otherwise perfect photonic crystals, acts as a high - q micro - cavity
通過原子上能級與光子頻率帶隙邊緣的相對位置或者光子態密度，可以抑制或增強原子的自發輻射。分析並得到了一些奇異的現象，如自發輻射的諧振子行為、光的局域、單光子?原子局域態、上能級中存在非零穩態原子布居數、類似於真空中的拉比頻率分裂等。Such control can be realized in case where a atom interact with photonic band gap matericals when the atom is placed in photonic crystals whose density of modes is dramatically different from that of free space vacuum. it was known that control could be achieved by varying the frequency ( which leads to the changes of the relative position of the upper levels from the forbidden gap ) or by varying the photonic density of modes ( dos ) or by varying the intial atomic state
由於光子晶體具有不同於真空中的光子態密度，原子和光子帶隙材料便發生相互作用，這樣便可以控制原子的自發輻射。改變原子上能級與光子禁帶邊緣的相對位置、材料中的光子態密度或原子初態都可以控制原子的自發輻射。The coherence properties of spontaneous radiation in the four - level atom
四能級原子自發輻射的量子相干特性In the focal plane of z = 0, the smaller the dss of the fhb, the higher the optical potential, and the greater the corresponding optimal detuning 8, which are beneficial to atomic lens because it cannot only be profitable to obtain an atomic lens with a higher resolution, but also helpful to reduce the spontaneous emission and photon scattering effects of atoms in the fhb
在焦平面上，聚焦中空光束的dss越小，光學勢越大，相應的最佳失諧量越大，這對原子透鏡的性能越有利。因為這不僅容易得到高解析度的原子透鏡，而且還可以減少在聚焦中空光束中原子的自發輻射和光子散射效應。Spontaneous radiation of a relativistic electron in the walking wave magnetic field
相對論性電子在行波磁場中的自發輻射It is found that the fwm field can cause the asymmetry of electromagnetically induce transparency profile. in addition, the effect of different propagating orientations of probe field on the electromagnetically induced transparency is also discussed. in the molecular multi - level system with the perturbed superposition levels, we discuss the electromagnetically induced transparency, spontaneous emission enhancement, double dark resonance and double electromagnetically induced transparency by using the density matrix equation under weisskopf - winger approximation and dressed - state density matrix equation
針對實際的實驗條件，考慮了一種影響量子干涉的新的因素-四波混頻場，研究了四波混頻場對雙光子探測的-型能級體系的eit的影響，發現四波混頻場能夠導致雙光子探測的eit線型的不對稱，在此基礎上，討論了不同探測場的傳播方式對eit的影響，針對分子中實際存在的包含有微擾能級的不同多能級系統，我們分別採用綴飾態繪景下的密度矩陣方程和weisskopf - wigner近似下的密度矩陣方程詳細地討論了電磁感應透明、自發輻射的干涉相消和相長、雙暗態共振和雙電磁感應透明現象。Equally objectionable is the fact that saturation by spontaneous emission reduces the gain exercised by an incoming signal.
同樣不利的事實是，自發輻射引起的飽和減少了入射信號所能獲得的增益。The justification of(13. 2-2)as a representation of spontaneous emission noise is provided by the discussion preceding(13. 1-7).
根據上面對式（131-7）的討論，就可以將公式（132-2）看作是自發輻射噪聲的表達式。Then we discuss the influence of laser produced by ase on signal gain
討論了自發輻射產生的振蕩光對信號光增益的影響。Theoretical calculations of einstein spontaneous emission coefficients for hbr molecule
分子愛因斯坦自發輻射系數的一種理論計算方法The method that is used in controling spontaneous emission of a two - level or three - level atom in this paper
這篇論文研究了一種控制多能級原子自發輻射的方法。The coupling originates from spontaneous emission of the probe transition and the spontaneous transfer of excited state coherence to ground state coherence
一個是探測躍遷的自發輻射，產生的耦合具有相同的符號，此時原子相干表現為抑制吸收。Because power management in this thesis aims at amplified spontaneous emission noise of erbium ? oped fiber amplifier ( edfa ), the thesis introduces the simplified stark ? split energy levels of er3 ", amplified working mechanisms of er3 * and working performance of edfa in details
因為本文所採用的功率管理主要是針對edfa摻餌光纖放大器所產生的自發輻射噪聲去採取均衡措施，所以論文中詳細介紹了edfa中鉺離子的stark分裂的簡化的能級模型、鉺離子的放大工作機理及edfa的工作特性。We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s
根據能量動量守恆關系和clbo的色散方程，詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬，並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。Therefore it is considered that the spontaneous emission of atom is caused by the fluctuation of dipole moment, not by the dipole moment oscillation of the atomic system
原子偶極矩的期待值總是零，但偶極矩的起伏恆等於一個不為零的常數，因此，原子的自發輻射是由偶極矩的漲落引起的，並非原子偶極矩振蕩造成的結果。分享友人