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Generation of terahertz radiation by AlGaAs nanowires.

Trukhin, V.N. and Buyskih, A.S. and Bouravlev, A.D. and Mustafa, I.A. and Samsonenko, Yu. B. and Trukhin, A.V. and Cirlin, G.E. and Kaliteevski, M.A. and Zeze, D.A. and Gallant, A.J. (2015) 'Generation of terahertz radiation by AlGaAs nanowires.', JETP letters., 102 (5). pp. 316-320.


Terahertz emission by AlGaAs nanowires grown on a GaAs substrate under excitation by femtosecond optical pulses has been observed. It is demonstrated that THz emission occurs via excitation of photocurrent in the nanowires. The dynamics of photoinduced charge carriers is studied via the influence of an electron—hole plasma on terahertz radiation. It is shown that the capture of charge carriers on vacancies, which exist at the boundaries of nanowires, on the interfaces between cubic and hexagonal phase in nanowires, leads to an increase in the efficiency of terahertz emission.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Publisher statement:The final publication is available at Springer via
Date accepted:25 August 2015
Date deposited:18 January 2016
Date of first online publication:14 November 2015
Date first made open access:01 September 2016

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