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Generation of narrow-band terahertz radiation via optical rectification of femtosecond pulses in periodically poled lithium niobate

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6 Author(s)
Lee, Y.-S. ; Center for Ultrafast Optical Science, The University of Michigan, Ann Arbor, Michigan 48109-2099 ; Meade, T. ; Perlin, V. ; Winful, H.
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We demonstrate a promising technique for generating narrow-band terahertz electromagnetic radiation. Femtosecond optical pulses are propagated through a periodically poled lithium-niobate crystal, where the domain length is matched to the walk-off length between the optical and THz pulses. The bandwidth of the THz wave forms is 0.11 at 1.7 THz. Optical rectification gives rise to a THz wave form which corresponds to the domain structure of the periodically poled lithium niobate. © 2000 American Institute of Physics.

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Applied Physics Letters  (Volume:76 ,  Issue: 18 )