Narrow linewidth tunable THz signal radiated by photomixing: Coupling a unitravelling carrier photodiode and a two-axis dual-frequency laser

Narrow linewidth tunable THz signal radiated by photomixing: Coupling a unitravelling carrier photodiode and a two-axis dual-frequency laser

A narrow linewidth THz source is reported. A beatnote provided by a dual-frequency laser is sent into a unitravelling carrier photodiode, and radiated by a transverse-electromagnetic-horn antenna. The emitted THz signal is detected by a subharmonic mixer coupled to an electrical spectrum analyzer. T...

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Hauptverfasser: Rolland, A., Ducournau, G., Loas, G., Peytavit, E., Beck, A., Akalin, T., Zaknoune, M., Lampin, J., Brunei, M., Bondu, F., Vallet, M., Alouini, M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Biomedical optical imaging
Extraterrestrial measurements
Optical mixing
Optical resonators
Photodiodes
Pump lasers
Semiconductor lasers
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Beschreibung
Zusammenfassung:A narrow linewidth THz source is reported. A beatnote provided by a dual-frequency laser is sent into a unitravelling carrier photodiode, and radiated by a transverse-electromagnetic-horn antenna. The emitted THz signal is detected by a subharmonic mixer coupled to an electrical spectrum analyzer. The measured linewidth is better than 30 kHz and tunable from DC to 770 GHz with a minimum 30 dB dynamic range.
ISSN:2160-8989
2160-9004
DOI:10.1364/CLEO_SI.2012.CTu1B.3