A 3.5-THz, 6-Harmonic, Single-Ended Schottky Diode Mixer for Frequency Stabilization of Quantum-Cascade Lasers
Artikel i vetenskaplig tidskrift, 2021

Efficient and compact frequency converters are essential for frequency stabilization of terahertz sources. In this paper, we present a 3.5-THz, 6-harmonic, integrated Schottky diode mixer operating at room temperature. The designed frequency converter is based on a single-ended, planar Schottky diode with a sub-micron anode contact area defined on a suspended 2-m ultra-thin GaAs substrate. The dc-grounded anode pad with the radio frequency E-plane probe resulted in an electrically compact circuit. At 200 MHz intermediate frequency, a mixer conversion loss of about 59 dB is measured resulting in a 40 dB signal-to-noise ratio for phase locking a 3.5-THz quantum-cascade laser. Using a quasi-static diode model combined with electromagnetic simulations, good agreement with the measured results was obtained. Harmonic frequency converters without the need of cryogenic cooling will help in the realization of highly sensitive space and air-borne heterodyne receivers.

Schottky diodes

heterodyne receivers

harmonic mixers

mixer characterization

Frequency converters

quantum-cascade lasers

terahertz electronics

frequency stabilization

integrated circuits

phase locking

Författare

Divya Jayasankar

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Gigahertzcentrum

RISE Research Institutes of Sweden

Vladimir Drakinskiy

Gigahertzcentrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Nick Rothbart

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Heiko Richter

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Xiang Lü

Paul Drude Institut fur Festkorperelektronik

Lutz Schrottke

Paul Drude Institut fur Festkorperelektronik

Holger T. Grahn

Paul Drude Institut fur Festkorperelektronik

Martin Wienold

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Heinz-Wilhelm Hübers

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Peter Sobis

Omnisys Instruments

Gigahertzcentrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Jan Stake

Chalmers, Mikroteknologi och nanovetenskap (MC2), Terahertz- och millimetervågsteknik

Gigahertzcentrum

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

THz Schottky diode mixers for high resolution FIR spectroscopy

Rymdstyrelsen, 2018-01-01 -- 2019-12-31.

Rymdstyrelsen (170/17), 2018-01-01 -- 2019-12-31.

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Kollberglaboratoriet

Nanotekniklaboratoriet

Ämneskategorier

Elektroteknik och elektronik

Annan elektroteknik och elektronik

DOI

10.1109/TTHZ.2021.3115730

Mer information

Senast uppdaterat

2021-09-30