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Quantum-cascade lasers based upon metasurfaces (Conference Presentation)
Author(s): Benjamin S. Williams; Luyao Xu; Christopher A. Curwen; Daguan Chen; John L. Reno; Tatsuo Itoh

Paper 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.

Paper Details

Date Published: 14 March 2018
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Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105401L (14 March 2018); doi: 10.1117/12.2293352
Show Author Affiliations
Benjamin S. Williams, Univ. of California, Los Angeles (United States)
Luyao Xu, Univ. of California, Los Angeles (United States)
Christopher A. Curwen, Univ. of California, Los Angeles (United States)
Daguan Chen, Univ. of California, Los Angeles (United States)
John L. Reno, Sandia National Labs. (United States)
The Ctr. for Integrated Nanotechnologies (United States)
Tatsuo Itoh, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 10540:
Quantum Sensing and Nano Electronics and Photonics XV
Manijeh Razeghi; Gail J. Brown; Jay S. Lewis; Giuseppe Leo, Editor(s)

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