Abstract

Diffraction gratings with feature sizes comparable to the wavelength are analyzed with a finite-difference time-domain method, which is a unique approach to electromagnetic problems in the time domain. The diffraction efficiencies obtained are in good agreement with other commonly used numerical methods in the frequency domain. As a further application, diffraction problems with pulsed light are also investigated.

© 1998 Optical Society of America

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Figures (11)

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