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

Scalari, Giacomo; Ajili, Lassaad; Faist, Jéro⁁me; Beere, Harvey; Linfield, Edmund; Ritchie, David; Davies, Giles
May 2003
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3165
Academic Journal
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.


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