Optical fields of a subwavelength metal aperture in a very small aperture laser (VSAL)

15 January 2002

proceedings article
Published by SPIE-Intl Soc Optical Eng

p. 277-284
https://doi.org/10.1117/12.453436

Abstract

The effect of metal thickness on the transmitted optical field of a sub-wavelength metal aperture on a Very Small Aperture Laser (VSAL) is modeled and studied experimentally. The experimental results were obtained in the far field, on a VSAL fabricated from a commercial semiconductor diode laser using Focused Ion Beam Etching (FIBE). The optical field in the near-field region of the VSAL was modeled by the Finite Difference Time Domain (FDTD) method. In this model, the laser was assumed to be decoupled from the aperture.

Keywords

LASERS
METALS
NEAR FIELD
SEMICONDUCTOR LASERS
SEMICONDUCTORS
ETCHING
FINITE-DIFFERENCE TIME-DOMAIN METHOD
ION BEAMS

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