Ground state terahertz quantum cascade lasers
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Hu_Ground state.pdf
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Author(s)
Hu, Qing
Reno, John L.
Chan, Chun Wang Ivan
Date Issued
October 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Chan, Chun Wang I., Qing Hu, and John L. Reno. “Ground State Terahertz Quantum Cascade Lasers.” Appl. Phys. Lett. 101, no. 15 (2012): 151108. © 2012 American Institute of Physics
Version
Final published version
Abstract
A terahertz quantum cascade laser (THz QCL) architecture is presented in which only the ground state subbands of each quantum well are involved in the transport and lasing transition. Compared to state-of-the art THz QCLs based on the resonant-phonon scheme, ground stateQCLs employ narrower wells so that all high-energy subbands are pushed up far above the occupied subband levels, significantly reducing parasitic interactions. Data on the experimental realization of two types of ground stateQCLs are presented, in which the result of lasing above 5 THz is demonstrated.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.4759043
