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Proceedings Paper

Laser scanning using spatiotemporal beam dynamics in metasurfaces (Conference Presentation)
Author(s): Amr M. Shaltout; Konstantinos Lagoudakis; Soo Jin Kim; Jelena Vuckovic; Vladimir M. Shalaev; Mark L. Brongersma
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Paper Abstract

A new methodology is proposed to implement laser beam steering with a wide angle of view and 4-5 orders of magnitude enhancement in scanning speed. It is based on light-matter interaction between metasurfaces and mode-locked lasers with a frequency-comb spectrum (i.e., equally-spaced phased-locked frequency lines). Replacing CW lasers with frequency-comb sources expands the impact of flat metasurfaces towards producing dynamic optical patterns rather than only static patterns in the far-field. A metasurface is judiciously designed to produce the optical pattern of a rotating light beam realizing ultrafast laser scanning with ~90-deg angle-of-view over ~100ps time interval.

Paper Details

Date Published: 25 September 2017
Proc. SPIE 10343, Metamaterials, Metadevices, and Metasystems 2017, 1034309 (25 September 2017); doi: 10.1117/12.2273633
Show Author Affiliations
Amr M. Shaltout, Stanford Univ. (United States)
Konstantinos Lagoudakis, Stanford Univ. (United States)
Soo Jin Kim, Stanford Univ. (United States)
Jelena Vuckovic, Stanford Univ. (United States)
Vladimir M. Shalaev, Purdue Univ. (United States)
Mark L. Brongersma, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 10343:
Metamaterials, Metadevices, and Metasystems 2017
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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