頻帶分裂 的英文怎麼說
中文拼音 [bīndàifēnliè]
頻帶分裂
英文
band splitting-
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。Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization, and considered the cases that the pump beams have either narrowband or broadband linewidth. we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions. that is to say, this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
文摘:研究了四能級系統中基於五階極化的拍頻效應，考慮了抽運光束為窄帶線寬或寬帶線寬的情形.發現其對能級分裂的測量精度決定於光學躍遷的均勻增寬.也就是說，這種技術在測量與基態是偶極禁戒躍遷的兩激發態之間的能級分裂時，可得到消除多普勒增寬的精度We discussed the main characteristic parameters of seismic kinesiology and dynamics of mine engineering fracture zone, including relative amplitude, phase time of wave crest, similarity factor, principal frequency band energy, 3 - d space time gradient and coherent coefficient et al., and puts forward the processing method of 3 - d seismic characteristic parameters about denoise - smoothing, generalization, correlation analysis, characteristic transformation ; and presents the method of pattern recognition of mine engineering fracture zone
摘要本文從時間域、頻率域、三維空間域介紹了礦山工程裂隙破碎帶主要的地震運動學、動力學屬性參數，包括相對振幅、波峰相位時間、相似系數、主頻帶能量、二維空間時間梯度和相干系數等，提出了礦山工程裂隙破碎帶三維地震屬性的去噪平滑、歸一化、相關分析、特徵變換的處理方法以及裂隙破碎帶的模式識別原理與方法，並用實例說明了該方法的應用效果。In this paper ， based on the method of spectral analysis and the theory of fracture mechanics, by using the broad - band digital data recorded by xi an telemetry seismic network, the stress drop and regional shear stress of moderate and small earthquakes in shanxi province are determined firstly
利用西安數字地震遙測臺網記錄的寬頻帶數字地震資料，應用斷裂力學理論與譜分析方法，首次測定了陜西地區中小地震的應力降和區域剪切應力值。Shear wave splitting was observed by employing torsion vibration shear - wave transducers with broadband, which show that shear wave, whatever it ' s vibration mode may be, can split in anisotropy media
在各向異性介質中，使用寬頻帶扭轉振動橫波換能器觀測到了橫波分裂現象，表明在各向異性介質中無論什麼振動方式的橫波中都會發生橫波分裂。The method of bispectrum reconstruction detects fracture zones by learning the difference of frequency components because fracture can change the frequency components of seismic responses. the theory of time - frequency analysis computes the difference in the gradient direction of time - frequency spectrum
雙譜重構的方法就是根據裂縫會改變地震波頻率成分的基本想法，通過求取具有不同頻率成分的地震波的差異來實現對裂縫發育帶的檢測的。分享友人