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Opt Lett. 1996 Nov 1;21(21):1762-4.

Enhancement of narrow-band terahertz radiation from photoconducting antennas by optical pulse shaping.

Abstract

We report the use of optical pulse shaping to convert single femtosecond pulses into lower-intensity pulse sequences for excitation of photoconductive dipole antennas, which results in the generation of bursts of tunable narrow-band free-space terahertz radiation. Our experiments demonstrate that the use of such pulse sequences can significantly enhance the spectral amplitude of the narrow-band terahertz radiation by avoiding the saturation effects that occur with single-pulse excitation. Our technique also provides the capability for terahertz wave-form shaping.

PMID:
19881793
DOI:
10.1364/ol.21.001762

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