Publication: An advanced approach to control the electro-optical properties of LT-GaAs-based terahertz photoconductive antenna
Дата
2020
Авторы
Buryakov, A. M.
Ivanov, M. S.
Khusyainov, D. I.
Mishina, E. D.
Nomoev, S. A.
Vasil'evskii, I. S.
Vinichenko, A. N.
Kozlovskii, K. I.
Chistyakov, A. A.
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Аннотация
© 2019 Elsevier LtdThis work reports on an advanced approach to the design of THz photoconductive. antenna (PCA). The LT-GaAs thin films used for the PCA fabrication were synthesized by MBE method on GaAs (100) substrate by adjusting the As pressure, As/Ga fluxes ratio, growth/annealing temperatures and annealing time. These parameters crucially affect electro-optical properties of the PCA samples as evidenced by the THz radiation power and time-domain spectroscopy measurements. The annealing temperature of 670 °C was found to be optimal for constructing a PCA possessing high amplitude of the THz radiation over the spectral range up to 1 THz at the resonance of 0.1 THz. The comparison of this PCA with the reference ZnTe crystal reveals a 2-fold increase in THz power. Furthermore, this antenna attains a 1.5-, 3-, and 2-fold increase in THz power, photocurrent efficiency, and actuating dc BV, as compared with the commercial ZOMEGA antenna. These results pave the way towards the creation of highly efficient LT-GaAs-based PCAs.
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An advanced approach to control the electro-optical properties of LT-GaAs-based terahertz photoconductive antenna / Buryakov, A.M. [et al.] // Materials Research Bulletin. - 2020. - 10.1016/j.materresbull.2019.110688
URI
https://www.doi.org/10.1016/j.materresbull.2019.110688
https://www.scopus.com/record/display.uri?eid=2-s2.0-85075393492&origin=resultslist
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https://openrepository.mephi.ru/handle/123456789/20058
https://www.scopus.com/record/display.uri?eid=2-s2.0-85075393492&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000504521200034
https://openrepository.mephi.ru/handle/123456789/20058