Broadband Distributed-Feedback Quantum Cascade Laser Array Operating From 8.0 to 9.8 \mu m

An ultra-broadband distributed-feedback quantum cascade laser array was fabricated, using a heterogeneous cascade based on two bound-to-continuum designs centered at 8.4 and 9.6 mum. This array emitted in a range over 220 cm -1 near a 9-mu m wavelength, operated in pulsed mode at room temperature. T...

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Bibliographic Details
Published in:IEEE photonics technology letters 2009-07, Vol.21 (13), p.914-916
Main Authors: Lee, B.G., Zhang, H.A., Pflugl, C., Diehl, L., Belkin, M.A., Fischer, M., Wittmann, A., Faist, J., Capasso, F.
Format: Article
Language:English
Subjects:
Arrays
Broadband
Cascades
Distributed-feedback (DFB) lasers
Emittance
Frequency
infrared spectroscopy
Laser modes
Laser transitions
mid-infrared
Optical arrays
Optical design
Photonic band gap
Photonics
Power generation
Quantum cascade lasers
quantum cascade lasers (QCLs)
Semiconductor laser arrays
semiconductor lasers
Spectroscopy
Wavelengths
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Summary:An ultra-broadband distributed-feedback quantum cascade laser array was fabricated, using a heterogeneous cascade based on two bound-to-continuum designs centered at 8.4 and 9.6 mum. This array emitted in a range over 220 cm -1 near a 9-mu m wavelength, operated in pulsed mode at room temperature. The output power of the array varied between 100- and 1100-mW peak intensity.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2009.2020440