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Effect of chirp in diffraction of short electromagnetic pulses through subwavelength apertures

机译：线性调频脉冲对通过亚波长孔径的短电磁脉冲衍射的影响

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Summary form only given. We demonstrate experimentally that the temporal advancement of THz pulses in diffraction by a subwavelength aperture is due to the intrinsic negative chirp. The effect is clearly observed only for sufficiently small apertures, when the bandwidth of the transmitted pulse exceeds the bandwidth on the incident pulse. The temporal advancement can be removed by eliminating the chirp of the THz pulse. For pulses generated by transient current in low temperature GaAs switches, the chirp is eliminated when long (1 ps) optical pulses are used to excite the photoconductor.

机译：仅提供摘要表格。我们通过实验证明了太赫兹脉冲在亚波长孔径衍射中的时间进展是由于固有的负线性调频引起的。当发射脉冲的带宽超过入射脉冲的带宽时，仅对于足够小的孔径才能清楚地观察到这种效果。可以通过消除THz脉冲的线性调频消除时间上的进展。对于由低温GaAs开关中的瞬态电流产生的脉冲，当使用长（1 ps）的光脉冲来激发光电导体时，将消除线性调频脉冲。

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《》|2002年|p.45-46|共2页
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Mitrofanov; O.; Lee; M.; Pfeiffer; L.N.; West; K.W.;
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中图分类无线电电子学、电信技术;
关键词
chirp modulation; optical modulation; optical pulse generation; electromagnetic wave diffraction; electromagnetic pulse; submillimetre wave generation; short electromagnetic pulse diffraction; subwavelength apertures; THz pulses; intrinsic negative c;

机译：线性调频调制光调制光脉冲的产生;电磁波衍射电磁脉冲亚毫米波产生;短电磁脉冲衍射亚波长孔径;太赫兹脉冲内在负c;

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Effect of chirp in diffraction of short electromagnetic pulses through subwavelength apertures

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