Widely tunable telecom MEMS-VCSEL for terahertz photomixing

We report frequency-tunable terahertz (THz) generation with a photomixer driven by an ultra-broadband tunable micro-electro-mechanical system vertical-cavity surface-emitting laser (MEMS-VCSEL) and a fixed-wavelength VCSEL, as well as a tunable MEMS-VCSEL mixed with a distributed feedback (DFB) diod...

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Bibliographic Details
Published in:Optics letters 2015-10, Vol.40 (19), p.4428-4431
Main Authors: Haidar, Mohammad Tanvir, Preu, Sascha, Paul, Sujoy, Gierl, Christian, Cesar, Julijan, Emsia, Ali, Küppers, Franko
Format: Article
Language:English
Subjects:
Diodes
Dynamic range
Dynamical systems
Photoconductors
Schottky diodes
Telecommunications
Tuning
Vertical cavity surface emission lasers
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Summary:We report frequency-tunable terahertz (THz) generation with a photomixer driven by an ultra-broadband tunable micro-electro-mechanical system vertical-cavity surface-emitting laser (MEMS-VCSEL) and a fixed-wavelength VCSEL, as well as a tunable MEMS-VCSEL mixed with a distributed feedback (DFB) diode. A total frequency span of 3.4 THz is covered in direct detection mode and 3.23 THz in the homodyne mode. The tuning range is solely limited by the dynamic range of the photomixers and the Schottky diode/photoconductor used in the experiment.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.40.004428