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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Bibliographic Details
Published in:Electronics letters Vol. 53; no. 12; pp. 799 - 800
Main Authors: Li, L.H, Chen, L, Freeman, J.R, Salih, M, Dean, P, Davies, A.G, Linfield, E.H
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 08.06.2017
Subjects:
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 Access:Get full text
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Summary: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