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@article{891753,
author = {Klapetek, Petr and Valtr, Miroslav},
article_number = {6},
keywords = {scanning near-field optical microscopy; finite difference in time domain; graphics processing unit},
language = {eng},
issn = {1096-9918},
journal = {Surface and Interface Analysis},
title = {Near-field optical microscopy simulations using graphics processing units},
volume = {42/2010},
year = {2010}
}
TY - JOUR
ID - 891753
AU - Klapetek, Petr - Valtr, Miroslav
PY - 2010
TI - Near-field optical microscopy simulations using graphics processing units
JF - Surface and Interface Analysis
VL - 42/2010
IS - 6
SN - 10969918
KW - scanning near-field optical microscopy
KW - finite difference in time domain
KW - graphics processing unit
N2 - Scanning near-field optical microscopy(NSOM)is a perspective method for local analysis of optical parameters of nanostructures used in electro-optics, photonics and many other field of research. One of the approaches to determine the effects of topography on optical data is to simulate NSOM images using an electromagnetic field modeling method, e.g. finite difference in time domain method. However, this approach is extremely slow, as full electromagnetic field propagation calculation must be run for each pixel of the resulting simulated image. In this paper, we present a fast method for computing simulated NSOM images based on the use of a graphics processing unit (GPU or computer graphics card) in order to speed up the computations. We will show that the large speedup using this approach (more than 40 times) allows us to simulate images in a time comparable to their real measurement, which increases the possibilities of quantitative analysis using NSOM. Data simulated by a GPU will be compared with those of real measurements as well.
ER -
KLAPETEK, Petr a Miroslav VALTR. Near-field optical microscopy simulations using graphics processing units. \textit{Surface and Interface Analysis}. 2010, roč.~42/2010, č.~6, 5 s. ISSN~1096-9918.
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