NDLI: Multi-Watt high-power THz frequency quantum cascade lasers

Content Provider	IET Digital Library
Author	Li, L. H. Chen, L. R. Freeman, J. R. Salih, M. Dean, P. Davies, A. G. Linfield, E. H.
Abstract	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.
Starting Page	799
Ending Page	800
Page Count	2
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 12, Jun (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.0662
Journal	Electronics Letters
Publisher	The Institution of Engineering and Technology
Publisher Date	2017-05-05
Access Restriction	Open
Rights License	Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Subject Keyword	Absorption Cryostat Polyethylene Window Design of Specific Laser System Laser Beam Modulation Laser Mode Lasing Action in SemiConductor Mode Locking And Tuning Optical Collection Efficiency Optical Pulse Generation Pulsing And Switching Quantum Cascade Lasers Semiconductor Laser Size 24 Mum Surface Plasmon Resonance Surface-plasmon Waveguide Temperature 10 K Temperature 132 K Temperature 77 K Ultrafast Optical Technique
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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