Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3496035
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Funding
- National Science Foundation [ECCS-0935217]
- Air Force Office of Scientific Research [FA9550-09-1-0505-DOD]
- EPSRC (U.K.) [EP/E048811, ERC 228035-NOTES, 247375-TOSCA]
- Engineering and Physical Sciences Research Council [EP/E048811/1] Funding Source: researchfish
- EPSRC [EP/E048811/1] Funding Source: UKRI
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We report the design and performance of GaAs/Al0.15Ga0.85As terahertz quantum cascade lasers with double-phonon resonant depopulation and a vertical lasing transition. Devices were processed into gold-clad double-metal waveguides. Lasing at 3 THz was observed up to a heat-sink temperature of 172 K, which compares favorably with the performance of single-phonon resonant depopulation devices based on vertical lasing transitions. These results demonstrate that terahertz quantum cascade lasers based on double-phonon depopulation designs may be a viable alternative to single-phonon depopulation designs for achieving high-temperature operation. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3496035]
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