InAs/AlSb quantum cascade lasers operating at 10 μm

Ohtani, K.; Ohno, H.
February 2003
Applied Physics Letters;2/17/2003, Vol. 82 Issue 7, p1003
Academic Journal
InAs/AlSb intersubband quantum cascade lasers based on bound-to-continuum transitions are fabricated and operation at 10 µm is demonstrated. A spatially indirect intersubband transition together with a double plasmon waveguide structure is employed. Threshold current density is 4.9 kA/cm² at 4 K. Temperature dependence of the threshold current density is also presented.


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