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Proceedings Paper

Beam forming of light from structured metal nano-aperture vertical cavity lasers
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Paper Abstract

We report the nano-scale patterning of concentric ring-shaped metal corrugations around a sub-wavelength aperture in Ag deposited on top of a vertical-cavity surface-emitting laser. The presence of the rings results in more than a doubling of collected far-field power and a reduction in far-field angular width from 100° to 28°. These nano-aperture lasers thus have the unique property of both a small near-field spot and a relatively low beam divergence. Finite-difference timedomain simulations confirm the experimental results and show that the far-field pattern is highly sensitive to misalignment of the aperture and to the presence of multiple transverse laser modes.

Paper Details

Date Published: 6 February 2009
PDF: 6 pages
Proc. SPIE 7229, Vertical-Cavity Surface-Emitting Lasers XIII, 72290H (6 February 2009); doi: 10.1117/12.813410
Show Author Affiliations
Joshua D. Sulkin, Univ. of Illinois (United States)
Chen Chen, Univ. of Illinois (United States)
Placid M. Ferreira, Univ. of Illinois (United States)
Kent D. Choquette, Univ. of Illinois (United States)

Published in SPIE Proceedings Vol. 7229:
Vertical-Cavity Surface-Emitting Lasers XIII
Kent D. Choquette; Chun Lei, Editor(s)

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