Quantum Cascade Lasers: New Resonant Tunnelling Light Sources for the Mid-Infrared

Quantum Cascade Lasers: New Resonant Tunnelling Light Sources for the Mid-Infrared

Recent results on quantum cascade lasers are reviewed. In these quantum devices based on resonant tunnelling the wavelength can be selected over a broad range of the infrared spectrum using the same heterostructure material by tailoring the active layer thickness. High power room temperature operati...

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Veröffentlicht in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 1996-10, Vol.354 (1717), p.2463-2467
Hauptverfasser: Capasso, F., Faist, J., Sirtori, C., Sivco, D. L., Baillargeon, J. N., Hutchinson, A. L., Cho, A. Y.
Format: Artikel
Sprache:eng
Schlagworte:
Current density
Electrons
Lasers
Lighting
Quantum cascade lasers
Quantum tunneling
Resonance
Room temperature
Superlattices
Wavelengths
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Beschreibung
Zusammenfassung:Recent results on quantum cascade lasers are reviewed. In these quantum devices based on resonant tunnelling the wavelength can be selected over a broad range of the infrared spectrum using the same heterostructure material by tailoring the active layer thickness. High power room temperature operation at wavelengths of 5 and 8.5 $\mu $m has been achieved. These are the first semiconductor lasers to operate at 300 K and above in this wavelength region.
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.1996.0112