| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Terahertz Waveforms Manipulation by Two Orthogonal-Polarized Femtosecond Pulses |
| LI De-Hua1,2**, MA Jian-Jun1,2, ZHOU Wei1,2, LIU Sheng-Gang3
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1Terahertz Science and Technology Research Center, Shandong University of Science and Technology, Qingdao 266510
2Qingdao Key Laboratory of Terahertz Technology, Qingdao 266510
3Terahertz Science and Technology Research Center, University of Electronic Science and Technology of China, Chengdu 610054
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| Cite this article: |
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LI De-Hua, MA Jian-Jun, ZHOU Wei et al 2011 Chin. Phys. Lett. 28 064205 |
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Abstract We present a method of terahertz generation in which both the amplitude and polarity of the terahertz pulse can be manipulated. A pair of temporally separated and orthogonally polarized collinear propagating femtosecond pulses with the same central frequencies are focused onto a (110) oriented ZnTe crystal. By adjusting the relative time delay between the pulses, the amplitude and polarity of the generated terahertz pulse based on difference frequency generation can be controlled. Theoretical derivation and simulation based on the one-dimensional propagation equation of the terahertz wave are carried out under simplified conditions of perfect phase matching, plane-wave approximation and no absorption.
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| Keywords:
42.65.-k
42.70.Mp
42.72.-g
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Received: 07 January 2011
Published: 29 May 2011
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