Title :
Broadband external cavity quantum cascade laser
Author :
Hugi, A. ; Wittmann, A. ; Bonetti, Y. ; Gini, E. ; Beck, M. ; Faist, J.
Author_Institution :
Inst. for Quantum Electron., ETH Zurich, Zurich, Switzerland
Abstract :
EC-QCLs operated in pulsed mode have a broader linewidth compared to EC-QCL operated in continuous-wave (CW), but offer wider tuning ranges using the same chip media. EC- QCLs using a heterogeneous active region have already shown broad tuning ranges in pulsed mode, covering the region from 8.2 mum to 10.4 mum using one single chip. This corresponds to 201 cm-1 tuning in wavenumbers, which is 18% of the central wavelength, with output powers in excess of 20 mW over 172 cm-1 at 18degC. At 15degC measured CW output power is 135 mW at the maximum of the gain curve.
Keywords :
laser beams; laser cavity resonators; laser modes; laser tuning; quantum cascade lasers; CW output power; EC-QCL operation; broadband external cavity quantum cascade laser; chip media; gain curve; heterogeneous active region; power 135 mW; pulsed mode laser tuning; temperature 15 C; temperature 18 C; wavelength 8.2 mum to 10.4 mum; Gases; Laser tuning; Light sources; Optical sensors; Optical tuning; Power generation; Power measurement; Quantum cascade lasers; Spectroscopy; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5191551
