Widely tunable telecom MEMS-VCSEL for terahertz photomixing

Mohammad Tanvir Haidar, Sascha Preu, Sujoy Paul, Christian Gierl, Julijan Cesar, Ali Emsia, Franko Küppers

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)4428-4431
Number of pages4
JournalOptics Letters
Issue number19
Publication statusPublished - 1 Oct 2015
Externally publishedYes


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