Quantum-cascade lasers based upon metasurfaces  (Conference Presentation)

Benjamin S. Williams; Luyao Xu; Christopher A. Curwen; Daguan Chen; John L. Reno; Tatsuo Itoh

doi:10.1117/12.2293352

14 March 2018 Quantum-cascade lasers based upon metasurfaces (Conference Presentation)

Benjamin S. Williams, Luyao Xu, Christopher A. Curwen, Daguan Chen, John L. Reno, Tatsuo Itoh

Proceedings Volume 10540, Quantum Sensing and Nano Electronics and Photonics XV; 105401L (2018) https://doi.org/10.1117/12.2293352
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Terahertz quantum-cascade lasers based upon active reflectarray metasurfaces are shown to be a viable platform for scalable power with high-quality beams. The “metasurface” is made up of sub-wavelength arrays of antenna-coupled sub-cavities loaded with quantum-cascade active material. One has the ability to spatially engineer the amplitude, phase, spectral, and polarization response of the metasurface. We present several recent results. By placing the metasurface as part of external cavity, focusing QC-VECSELs have been demonstrated with high slope efficiency, high cw power, and near diffraction-limited beam quality. Additionally, VECSELs with electrically switchable polarization have been demonstrated.

Conference Presentation

Citation Download Citation

Benjamin S. Williams, Luyao Xu, Christopher A. Curwen, Daguan Chen, John L. Reno, and Tatsuo Itoh "Quantum-cascade lasers based upon metasurfaces (Conference Presentation)", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105401L (14 March 2018); https://doi.org/10.1117/12.2293352

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KEYWORDS

Polarization

Quantum cascade lasers

Active plasmonics

Graphene

Metamaterials

Nanophotonics

Receivers

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