Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Microoptoelectromechanical systems-based external cavity quantum cascade lasers for real-time spectroscopy

 
: Butschek, Lorenz; Hugger, Stefan; Jarvis, Jan-Philip; Härtelt, Marko; Merten, André; Schwarzenberg, Markus; Grahmann, Jan; Stothard, David; Warden, Matthew; Carson, Christoph; Macarthur, John; Fuchs, Frank; Ostendorf, Ralf; Wagner, Joachim

:
Volltext urn:nbn:de:0011-n-4705839 (5.5 MByte PDF)
MD5 Fingerprint: c680f3416bf6545aeab0e8dd08fe3c7d
(CC) by
Erstellt am: 15.3.2018


Optical engineering 57 (2018), Nr.1, Art. 011010, 11 S.
ISSN: 0091-3286
ISSN: 0036-1860
ISSN: 1560-2303
European Commission EC
H2020; 645535; CHEQUERS
Compact High pErformance QUantum cascadE laseR Sensors
European Commission EC
FP7; 688265; MIRPHAB
MidInfraRed PHotonics devices fABrication for chemical sensing and spectroscopic applications
European Commission EC
FP7-ICT; 317884; MIRIFISENS
Mid InfraRed Innovative lasers For Improved SENSor of hazardous substances
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IAF ()
Fraunhofer IPMS ()
quantum-cascade laser; microoptoelectromechanical system; external cavity laser; mid-IR spectroscopy; real-time spectroscopy

Abstract
We report on mid-IR spectroscopic measurements performed with rapidly tunable external cavity quantum cascade lasers (EC-QCLs). Fast wavelength tuning in the external cavity is realized by a microoptoelectromechanical systems (MOEMS) grating oscillating at a resonance frequency of about 1 kHz with a deflection amplitude of up to 10 deg. The entire spectral range of the broadband QCL can therefore be covered in just 500  μs, paving the way for real-time spectroscopy in the mid-IR region. In addition to its use in spectroscopic measurements conducted in backscattering and transmission geometry, the MOEMS-based laser source is characterized regarding pulse intensity noise, wavelength reproducibility, and spectral resolution.

: http://publica.fraunhofer.de/dokumente/N-470583.html