Surface plasmon quantum cascade lasers at λ∼19 μm

Tredicucci, Alessandro; Gmachl, Claire; Gmachi, Clare; Wanke, Michael C.; Capasso, Federico; Hutchinson, Albert L.; Hutchison, Albert L.; Sivco, Deborah L.; Chu, Sung-Nee G.; Cho, Alfred Y.
October 2000
Applied Physics Letters;10/9/2000, Vol. 77 Issue 15
Academic Journal
The longest wavelength III-V semiconductor laser to date has been realized employing a quantum cascade configuration for the active material. It operates at λ∼19 μm on interminiband transitions in graded superlattices. The waveguide is based on surface plasmon modes confined at a metal-semiconductor interface. The devices emit peak output powers of 14 mW per facet at 10 K and laser action is achieved up to the maximum temperature of 145 K. © 2000 American Institute of Physics.


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