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Proceedings Paper

A study of near-field aperture geometry effects on very small aperture lasers (VSAL)
Author(s): Fang Chen; Amit Itagi; Larissa Stebounova; James A. Bain; Daniel D. Stancil; Gilbert C. Walker; Tuviah E. Schlesinger
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Paper Abstract

We have investigated nano-apertures with different geometries on VSALs using far-field measurements, near-field measurements, and finite difference time domain (FDTD) simulation methods. We were able to quantitatively verify the aperture geometry dependent power throughput in all three methods. From both far-field measurements and FDTD simulation results, we conclude that for the apertures of the same area, a rectangular aperture with the long side perpendicular to the active layer has the largest throughput, while a circular aperture has the second largest, and the rectangular aperture with the long side parallel to the active layer has the least throughput among the three. We have attempted to correlate the relationship between far-field power and near-field power. Employing an apertureless near-field scanning optical microscopy (NSOM), we found that for the two rectangular apertures being studied, the near-field power throughput results was consistent to that of far-field measurement. Using VSALs as a near-field aperture testbed was also proposed and demonstrated.

Paper Details

Date Published: 16 September 2003
PDF: 7 pages
Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); doi: 10.1117/12.532753
Show Author Affiliations
Fang Chen, Carnegie Mellon Univ. (United States)
Amit Itagi, Carnegie Mellon Univ. (United States)
Larissa Stebounova, Univ. of Pittsburgh (United States)
James A. Bain, Carnegie Mellon Univ. (United States)
Daniel D. Stancil, Carnegie Mellon Univ. (United States)
Gilbert C. Walker, Univ. of Pittsburgh (United States)
Tuviah E. Schlesinger, Carnegie Mellon Univ. (United States)

Published in SPIE Proceedings Vol. 5069:
Optical Data Storage 2003
Michael O'Neill; Naoyasu Miyagawa, Editor(s)

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