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High-power terahertz metasurface quantum-cascade VECSELs (Conference Presentation)
Author(s): Benjamin S. Williams; Christopher A. Curwen; John L. Reno
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Paper Abstract

The VECSEL architecture is shown to be an effective approach for building THz quantum-cascade lasers with scalable watt-level output power in a high quality beam pattern. The enabling component is a “metasurface” made up of sub-wavelength arrays of antenna-coupled sub-cavities loaded with quantum-cascade active material. By using a sub-cavity antenna based upon a third-order resonance (rather than a first order resonance), metasurfaces with higher fill factors are demonstrated which are suitable for large output powers. Watt-level pulsed output powers have been demonstrated in a single mode, with tunability achieved by intra-cryostat tuning of the cavity length.

Paper Details

Date Published: 13 March 2019
Proc. SPIE 10901, Vertical External Cavity Surface Emitting Lasers (VECSELs) IX, 1090109 (13 March 2019); doi: 10.1117/12.2513477
Show Author Affiliations
Benjamin S. Williams, Univ. of California, Los Angeles (United States)
Christopher A. Curwen, Univ. of California, Los Angeles (United States)
John L. Reno, Sandia National Labs. (United States)

Published in SPIE Proceedings Vol. 10901:
Vertical External Cavity Surface Emitting Lasers (VECSELs) IX
Ursula Keller, Editor(s)

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