Abstract
Two terahertz quantum cascade lasers based on GaAs∕Al0.1Ga0.9As heterostructures are reported. Pulsed mode operation up to 84K and continuous wave (cw) power of 0.36mW at 10K are demonstrated for the laser which emits from 1.34to1.58THz. The other laser shows emission from 1.2to1.32THz with pulsed mode operation up to 69K and cw power of 0.12mW at 10K.
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