Title :
Narrow linewidth tunable THz signal radiated by photomixing: Coupling a unitravelling carrier photodiode and a two-axis dual-frequency laser
Author :
Rolland, Antoine ; Ducournau, Guillaume ; Loas, Goulc´hen ; Peytavit, Emilien ; Beck, Alexandre ; Akalin, Tahsin ; Zaknoune, Mohamed ; Lampin, Jean-françois ; Brunei, M. ; Bondu, François ; Vallet, Marc ; Alouini, Mehdi
Author_Institution :
Dept. d´´Opt., Inst. de Phys. de Rennes, Rennes, France
Abstract :
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.
Keywords :
horn antennas; infrared sources; microwave photonics; optical harmonic generation; optical modulation; photodiodes; spectral line narrowing; terahertz wave generation; THz signal; beatnote; electrical spectrum analyzer; frequency 770 GHz; linewidth narrowing; phosphate glass; photomixing; subharmonic mixer; transverse-electromagnetic-horn antenna; two-axis dual-frequency laser; unitravelling carrier photodiode; Biomedical optical imaging; Extraterrestrial measurements; Optical mixing; Optical resonators; Photodiodes; Pump lasers; Semiconductor lasers;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
