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Large-area traveling-wave photonic mixers for increased continuous terahertz power
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Velocity-match of IR interference fringes to the THz wave on the CPS is obtained by a tuning-angle between the two heterodyned IR beams with ; (b) scanning electron microscope picture of a TW-MSM structure with inner part of bow-tie antenna; (c) small-area MSM or section of a TW-MSM.

Image of FIG. 2.
FIG. 2.

Calibrated power spectrum of TW-MSM and CPS with bowtie antenna . Two bolometer features are noted: a responsivity dip around 500 GHz and the band edge at 1400–1500 GHz. THz power is corrected for calculated bowtie reflection efficiency, but not for reflection losses of the silicon hemispherical lens (30%).

Image of FIG. 3.
FIG. 3.

Comparison of bias behavior between a set of TW-MSM mixers of different gap widths and a CPS mixer.

Image of FIG. 4.
FIG. 4.

THz power over combined IR power. The observed deviation from at higher IR powers is also present at near-dc frequencies. However, the relation holds up to highest IR powers.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Large-area traveling-wave photonic mixers for increased continuous terahertz power