Frequency tunability and mode switching of 2.5 THz quantum cascade lasers

Pavlov, Sergey and Hübers, Heinz-Wilhelm and Richter, Heiko and Semenov, Alexey and Tredicucci, Alessandro and Mahler, Lukas and Green, Richard and Beere, Harvey and Ritchie, David (2008) Frequency tunability and mode switching of 2.5 THz quantum cascade lasers. In: Proc. of the 1st International Workshop "THz Radiation: Basic Research and Applications", pp. 24-26. Institute of Electrical and Electronics Engineers. TERA 2008, [2008-10-02 - 2008-10-04], Alushta (Ukraine). ISBN 978-1-4244-2687-4

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Abstract

Spectral characteristics of quantum cascade lasers operating at about 2.5 terahertz have been investigated by means of high-resolution mixing spectroscopy. Linewidth, frequency tunability and frequency stability of the lasers were measured by mixing their radiation with radiation from a 2.5 terahertz gas laser (heterodyne mixing). The results of the homodyne mixing of different modes of the laser indicate on laser mode switching and large variations of the effective refractive index in the active medium caused by the laser drive current.

Item URL in elib:

https://elib.dlr.de/55926/

Document Type:

Conference or Workshop Item (Speech)

Title:

Frequency tunability and mode switching of 2.5 THz quantum cascade lasers

Authors:

Authors	Institution or Email of Authors	Authors ORCID iD
Pavlov, Sergey	UNSPECIFIED	UNSPECIFIED
Hübers, Heinz-Wilhelm	UNSPECIFIED	UNSPECIFIED
Richter, Heiko	UNSPECIFIED	UNSPECIFIED
Semenov, Alexey	UNSPECIFIED	UNSPECIFIED
Tredicucci, Alessandro	NEST CNR-INFM and Scuola Normale Superiore, Pisa, Italy	UNSPECIFIED
Mahler, Lukas	NEST CNR-INFM and Scuola Normale Superiore, Pisa, Italy	UNSPECIFIED
Green, Richard	NEST CNR-INFM and Scuola Normale Superiore, Pisa, Italy	UNSPECIFIED
Beere, Harvey	Cavendish Laboratory, University of Cambridge, Cambridge, UK	UNSPECIFIED
Ritchie, David	Cavendish Laboratory, University of Cambridge, Cambridge, UK	UNSPECIFIED

Date:

October 2008

Journal or Publication Title:

Proc. of the 1st International Workshop "THz Radiation: Basic Research and Applications"

Refereed publication:

Open Access:

Gold Open Access:

In SCOPUS:

In ISI Web of Science:

Page Range:

pp. 24-26

Publisher:

Institute of Electrical and Electronics Engineers

ISBN:

978-1-4244-2687-4

Status:

Published

Keywords:

THz cascade lasers, heterodyne mixing, frequency tunability

Event Title:

TERA 2008

Event Location:

Alushta (Ukraine)

Event Type:

international Conference

Event Dates:

[2008-10-02 - 2008-10-04]

Organizer:

IEEE Lasers and Electro-Optics Society (LEOS)

HGF - Research field:

Aeronautics, Space and Transport (old)

HGF - Program:

Space (old)

HGF - Program Themes:

W EW - Erforschung des Weltraums

DLR - Research area:

Space

DLR - Program:

W EW - Erforschung des Weltraums

DLR - Research theme (Project):

W - Projekt SOFIA (old)

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Terahertz and Infrared Sensors

Deposited By:

Pavlov, Dr. Sergey

Deposited On:

25 Nov 2008

Last Modified:

15 Jan 2010 00:21

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