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Continuous-wave operation of far-infrared quantum cascade lasers

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9 Author(s)
Ajili, L. ; Inst. de Phys., Neuchatel Univ., Switzerland ; Scalari, G. ; Hofstetter, D. ; Beck, M.
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Continuous-wave operation of a terahertz quantum cascade laser is reported. The device is based on a chirped superlattice design consisting of a three quantum well gain region followed by a four quantum well relaxation/injection region, realised in the GaAs/Al0.15Ga0.85As material system. Optical output powers ranging from 410 μW at 10 K to 124 μW at 35 K, at an emission wavelength of 66 μm are obtained.

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Electronics Letters  (Volume:38 ,  Issue: 25 )