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The authors report a GaAs∕Al0.1Ga0.9As quantum cascade laser based on a bound-to-continuum transition optimized for low frequency operation. High tunability of the gain curve is achieved by the Stark effect and laser emission is measured between 1.6 and 1.8THz. Pulsed mode operation up to 95K and continuous wave operation up to 80K are reported. The dynamical range in current is as high as 43%.
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Walther et al. (2006) studied this question.
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