论文信息 - Low threshold THz QC lasers with thin core regions

Low threshold THz QC lasers with thin core regions

It is demonstrated that the active region thickness of THz quantum cascade lasers can be reduced by a factor of 2 without effects on the threshold current density and maximum operating temperature of the laser. Pulsed and continuous-wave operation, with a low threshold J th = 71 A/cm 2 , are obtained for a 5.86 mum-thick THz QC laser. The emission is peaked at lambdasime115 mum and the waveguide resonator is based on a metal-metal geometry

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