Multi-Watt high-power THz frequency quantum cascade lasers

Multi-Watt high-power terahertz (THz) frequency quantum cascade lasers are demonstrated, based on a single, epitaxially grown, 24-μm-thick active region embedded into a surface-plasmon waveguide. The devices emit in pulsed mode at a frequency of ∼4.4 THz and have a maximum operating temperature of 1...

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Veröffentlicht in:	Electronics letters Jg. 53; H. 12; S. 799 - 800
Hauptverfasser:	Li, L.H, Chen, L, Freeman, J.R, Salih, M, Dean, P, Davies, A.G, Linfield, E.H
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	The Institution of Engineering and Technology 08.06.2017
Schlagworte:	absorption cryostat polyethylene window laser modes optical collection efficiency optical pulse generation Photonics quantum cascade lasers size 24 mum surface plasmons surface‐plasmon waveguide temperature 10 K temperature 132 K temperature 77 K quantum cascade lasers laser modes temperature 132 K temperature 77 K size 24 mum temperature 10 K absorption optical collection efficiency cryostat polyethylene window surface plasmons optical pulse generation surface-plasmon waveguide
ISSN:	0013-5194, 1350-911X, 1350-911X
Online-Zugang:	Volltext
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Zusammenfassung:	Multi-Watt high-power terahertz (THz) frequency quantum cascade lasers are demonstrated, based on a single, epitaxially grown, 24-μm-thick active region embedded into a surface-plasmon waveguide. The devices emit in pulsed mode at a frequency of ∼4.4 THz and have a maximum operating temperature of 132 K. The maximum measurable emitted powers from a single facet are ∼2.4 W at 10 K and ∼1.8 W at 77 K, with no correction being made for the optical collection efficiency of the apparatus, or absorption by the cryostat polyethylene window.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2017.0662