Terahertz generation by means of ZnGeP2 large aperture photoconductive antenna V. Bulgakova, A. Ushakov, P. Chizhov [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): фотопроводящие антенны | двухфотонное поглощение | терагерцовая спектроскопия во временной областиGenre/Form: статьи в журналах Online resources: Click here to access online
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Optical engineering Vol. 60, № 8. P. 082015-1-082015-6Abstract: 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.
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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.
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