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Far-infrared (λ≃87 μm) bound-to-continuum quantum-cascade lasers operating up to 90 K

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7 Author(s)
Scalari, Giacomo ; Institute of Physics, University of Neuchâtel, CH-2000 Neuchâtel, Switzerland ; Ajili, Lassaad ; Faist, Jerome ; Beere, Harvey
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We report terahertz frequency (3.5 THz, λ≃87 μm) emission from quantum-cascade lasers employing a bound-to-continuum transition in the active region. The maximum operating temperature is in excess of 90 K. Peak powers of 20 mW at 20 K and 10 mW at 77 K are achieved. The same devices show continuous-wave operation up to 55 K with measured optical powers of 15 mW at 10 K. © 2003 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:82 ,  Issue: 19 )