@ARTICLE{ iet:/content/journals/10.1049/el.2013.4035, author = {Lianhe Li}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {Li Chen}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {Jingxuan Zhu}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {J. Freeman}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {P. Dean}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {A. Valavanis}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {A.G. Davies}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, author = {E.H. Linfield}, affiliation = {School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom}, keywords = {one-well injector;surface-plasmon waveguide;terahertz frequency quantum cascade lasers;THz QCL;laser output powers;pulsed mode;temperature 77 K;optical collection efficiency;power 1.01 W;power 420 mW;frequency 3.4 THz;temperature 123 K;bound-to-continuum transition;temperature 10 K;}, ISSN = {0013-5194}, language = {English}, abstract = {Terahertz (THz) frequency quantum cascade lasers emitting peak powers of >1 W from a single facet in the pulsed mode are demonstrated. The active region is based on a bound-to-continuum transition with a one-well injector, and is embedded into a surface-plasmon waveguide. The lasers emit at a frequency of ∼3.4 THz and have a maximum operating temperature of 123 K. The maximum measured emitted powers are ∼1.01 W at 10 K and ∼420 mW at 77 K, with no correction made to allow for the optical collection efficiency of the apparatus.}, title = {Terahertz quantum cascade lasers with >1 W output powers}, journal = {Electronics Letters}, issue = {4}, volume = {50}, year = {2014}, month = {February}, pages = {309-311(2)}, publisher ={Institution of Engineering and Technology}, copyright = {This is an open access article published by the IET under the Creative Commons Attribution License <br/>(<a href="http://creativecommons.org/licenses/by/3.0/" target="_blank">http://creativecommons.org/licenses/by/3.0/</a>)}, url = {https://digital-library.theiet.org/;jsessionid=1fid5ja0bj938.x-iet-live-01content/journals/10.1049/el.2013.4035} }