Phase Locking of 3.5-THz and 4.7-THz Quantum-Cascade Lasers Using a Schottky Diode Harmonic Mixer

Richter, Heiko and Rothbart, Nick and Wienold, Martin and Lü, Xiang and Schrottke, Lutz and Grahn, Holger T. and Jayasankar, Divya and Drakinskiy, Vladimir and Stake, Jan and Sobis, Peter and Hübers, Heinz-Wilhelm (2021) Phase Locking of 3.5-THz and 4.7-THz Quantum-Cascade Lasers Using a Schottky Diode Harmonic Mixer. In: 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021. IRMMW 2021, 2021-08-29 - 2021-09-03, Chengdu, China. doi: 10.1109/IRMMW-THz50926.2021.9566876. ISBN 978-172819424-0. ISSN 2162-2027.

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Abstract

High frequency accuracy and stability are important requirements for local oscillators in terahertz heterodyne spectrometers. We report on a phase-locked loop for quantum-cascade lasers (QCLs) operating at 3.5 and 4.7 THz, two very important frequencies in atmospheric science and astronomy. The QCLs are locked to the multiplied output of a frequency synthesizer using a Schottky diode harmonic mixer.

Item URL in elib:

https://elib.dlr.de/143729/

Document Type:

Conference or Workshop Item (Speech)

Title:

Phase Locking of 3.5-THz and 4.7-THz Quantum-Cascade Lasers Using a Schottky Diode Harmonic Mixer

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Richter, Heiko	Heiko.Richter (at) dlr.de	https://orcid.org/0000-0002-3639-6997	UNSPECIFIED
Rothbart, Nick	Nick.Rothbart (at) dlr.de	UNSPECIFIED	UNSPECIFIED
Wienold, Martin	Martin.Wienold (at) dlr.de	UNSPECIFIED	UNSPECIFIED
Lü, Xiang	Paul-Drude-Institut für Festkörperelektronik, Berlin, Germany	UNSPECIFIED	UNSPECIFIED
Schrottke, Lutz	Paul-Drude-Institut für Festkörperelektronik, Berlin, Germany	UNSPECIFIED	UNSPECIFIED
Grahn, Holger T.	Paul-Drude-Institut für Festkörperelektronik, Berlin, Germany	UNSPECIFIED	UNSPECIFIED
Jayasankar, Divya	Chalmers University of Technology, Sweden	UNSPECIFIED	UNSPECIFIED
Drakinskiy, Vladimir	Chalmers University of Technology, Sweden	UNSPECIFIED	UNSPECIFIED
Stake, Jan	Chalmers University of Technology	UNSPECIFIED	UNSPECIFIED
Sobis, Peter	Omnisys Instruments AB	UNSPECIFIED	UNSPECIFIED
Hübers, Heinz-Wilhelm	Heinz-Wilhelm.Huebers (at) dlr.de	UNSPECIFIED	UNSPECIFIED

Date:

30 August 2021

Journal or Publication Title:

46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

DOI:

10.1109/IRMMW-THz50926.2021.9566876

ISSN:

2162-2027

ISBN:

978-172819424-0

Status:

Published

Keywords:

THz, QCL, PLL, heterodyne, spectroscopy, stabilization

Event Title:

IRMMW 2021

Event Location:

Chengdu, China

Event Type:

international Conference

Event Start Date:

29 August 2021

Event End Date:

3 September 2021

Organizer:

University of Electronic Science and Technology of China

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Earth Observation

DLR - Research area:

Raumfahrt

DLR - Program:

R EO - Earth Observation

DLR - Research theme (Project):

R - Terahertz spectrometer for atomic oxygen in the mesosphere/thermosphere

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy

Deposited By:

Richter, Dr.rer.nat. Heiko

Deposited On:

01 Sep 2021 10:42

Last Modified:

24 Apr 2024 20:43

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