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Optical control over two-dimensional lattice vibrational trajectories in crystalline quartz

机译:晶体石英中二维晶格振动轨迹的光学控制

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摘要

Control over the trajectory of two-dimensional vibrational motion is demonstrated for a degenerate E-symmetry optic phonon mode in crystalline quartz. Pairs of ultrashort optical pulses of different polarizations are used to impart momentum along orthogonal directions of the degenerate mode through impulsive stimulated Raman scattering. Variation of the temporal separation of the two excitation pulses permits various Linear, elliptical, or circular trajectories to be selected. More complex two-dimensional trajectories are also possible if arbitrarily shaped excitation waveforms are used. (C) 1998 American Institute of Physics. [References: 30]
机译:二维振动运动轨迹的控制被证明为退化的E-对称光学声子模式的晶体石英。使用成对的不同偏振的超短光脉冲,通过脉冲受激拉曼散射沿简并模的正交方向传递动量。两个激励脉冲的时间间隔的变化允许选择各种线性,椭圆形或圆形轨迹。如果使用任意形状的激励波形,则更复杂的二维轨迹也是可能的。 (C)1998美国物理研究所。 [参考:30]

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