Terahertz generation by means of ZnGeP2 large aperture photoconductive antenna.

Autor: Bulgakova, Vladislava, Ushakov, Aleksandr, Chizhov, Pavel, Yudin, Nikolay, Zinovev, Mikhail, Podzyvalov, Sergey, Dolmatov, Timophey, Bukin, Vladimir, Garnov, Sergey
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Zdroj: Optical Engineering; Aug2021, Vol. 60 Issue 8, p82015-82015, 1p
Abstrakt: The generation of terahertz (THz) radiation using a ZnGeP2 (ZGP) large-aperture photoconductive antenna (PCA) was demonstrated. The semiconductors were excited above and below the bandgap (400 and 800 nm) by a femtosecond Ti:sapphire laser. The THz pulse waveform generated by the ZGP antenna was measured using a time-domain spectroscopy technique. The antenna's THz pulse energy dependence on the optical pump energy was measured, and saturation fluence and carrier mobility were estimated. The ZGP and a chemical vapor deposited ZnSe-based PCA were compared. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index