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

fYear

2012

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics (CLEO), 2012 Conference on

Conference_Location

San Jose, CA

Print_ISBN

978-1-4673-1839-6

Type

conf

Filename

6326002