Berry, Christopher W. ; Hashemi, Mohammad R. ; Preu, Sascha ; Lu, Hong ; Gossard, Arthur C. ; Jarrahi, Mona (2014)
High power terahertz generation using 1550 nm plasmonic photomixers.
In: Applied Physics Letters, 105
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We present a 1550 nm plasmonic photomixer operating under pumping duty cycles below 10, which offers significantly higher terahertz radiation power levels compared to previously demonstrated photomixers. The record-high terahertz radiation powers are enabled by enhancing the device quantum efficiency through use of plasmonic contact electrodes, and by mitigating thermal breakdown at high optical pump power levels through use of a low duty cycle optical pump. The repetition rate of the optical pump can be specifically selected at a given pump duty cycle to control the spectral linewidth of the generated terahertz radiation. At an average optical pump power of 150 mW with a pump modulation frequency of 1 MHz and pump duty cycle of 2, we demonstrate up to 0.8 mW radiation power at 1 THz, within each continuous wave radiation cycle.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Berry, Christopher W. ; Hashemi, Mohammad R. ; Preu, Sascha ; Lu, Hong ; Gossard, Arthur C. ; Jarrahi, Mona |
| Art des Eintrags: | Bibliographie |
| Titel: | High power terahertz generation using 1550 nm plasmonic photomixers |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 105 |
| URL / URN: | http://dx.doi.org/10.1063/1.4890102 |
| Kurzbeschreibung (Abstract): | We present a 1550 nm plasmonic photomixer operating under pumping duty cycles below 10, which offers significantly higher terahertz radiation power levels compared to previously demonstrated photomixers. The record-high terahertz radiation powers are enabled by enhancing the device quantum efficiency through use of plasmonic contact electrodes, and by mitigating thermal breakdown at high optical pump power levels through use of a low duty cycle optical pump. The repetition rate of the optical pump can be specifically selected at a given pump duty cycle to control the spectral linewidth of the generated terahertz radiation. At an average optical pump power of 150 mW with a pump modulation frequency of 1 MHz and pump duty cycle of 2, we demonstrate up to 0.8 mW radiation power at 1 THz, within each continuous wave radiation cycle. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) > THz Bauelemente und THz Systeme 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) > Terahertz Systems |
| Hinterlegungsdatum: | 19 Jun 2015 11:49 |
| Letzte Änderung: | 10 Dez 2021 07:13 |
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