Long-infrared InAs-based quantum cascade lasers operating at 291 K (λ=19 μm) with metal-metal resonators
@article{Chastanet2014LonginfraredIQ, title={Long-infrared InAs-based quantum cascade lasers operating at 291 K (λ=19 μm) with metal-metal resonators}, author={D. Chastanet and G. Lollia and A. Bousseksou and M. Bahriz and P. Laffaille and A. Baranov and F. Julien and R. Colombelli and R. Teissier}, journal={Applied Physics Letters}, year={2014}, volume={104}, pages={021106} }
We demonstrate quantum cascade lasers in the InAs/AlSb material system emitting at wavelengths of λ = 19 μm and λ = 21 μm. The maximum operating temperatures are 291 K and 250 K, and the threshold current densities at 78 K are as low as 0.6 kA/cm2 and 1.3 kA/cm2 for the lasers emitting at λ = 19 μm and λ = 21 μm, respectively. These values represent the best performance to date for quantum cascade lasers operating above λ = 16 μm. Although the devices employ metal-metal waveguide geometries… Expand
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