Finite-difference-time-domain analysis of finite-number-of-periods holographic and surface-relief gratings

Papadopoulos, AD; Glytsis, EN

dc.contributor.author	Papadopoulos, AD	en
dc.contributor.author	Glytsis, EN	en
dc.date.accessioned	2014-03-01T01:28:24Z
dc.date.available	2014-03-01T01:28:24Z
dc.date.issued	2008	en
dc.identifier.issn	0003-6935	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18842
dc.subject.classification	Optics	en
dc.subject.other	Beam sizes	en
dc.subject.other	Boundary elements	en
dc.subject.other	Comparative studies	en
dc.subject.other	Finite difference time domains	en
dc.subject.other	Finite differences	en
dc.subject.other	Finite-difference time-domain methods	en
dc.subject.other	Fourth orders	en
dc.subject.other	Grating periods	en
dc.subject.other	Incident beams	en
dc.subject.other	Rigorous coupled-wave analysis	en
dc.subject.other	Scattered fields	en
dc.subject.other	Second orders	en
dc.subject.other	Surface-relief gratings	en
dc.subject.other	TM polarizations	en
dc.subject.other	Diffraction	en
dc.subject.other	Finite difference time domain method	en
dc.subject.other	Method of moments	en
dc.subject.other	Numerical methods	en
dc.subject.other	Boundary element method	en
dc.title	Finite-difference-time-domain analysis of finite-number-of-periods holographic and surface-relief gratings	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/AO.47.001981	en
heal.identifier.secondary	http://dx.doi.org/10.1364/AO.47.001981	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The total-field-scattered-field formulation of the finite-difference time-domain method (FDTD) is used to analyze the diffraction of finite incident beams by finite-number-of-periods holographic and surface-relief gratings. Both second-order and fourth-order FDTD formulations are used with various averaging schemes to treat permittivity discontinuities and a comparative study is made with alternative numerical methods. The diffraction efficiencies for gratings of several periods and various beam sizes, for both TE and TM polarization cases, are calculated and the FDTD results are compared with the finite-difference frequency-domain (FDFD) method results in the case of holographic gratings, and with the boundary element method results in the case of surface-relief gratings. Furthermore, the convergence of the FDTD results to the rigorous coupled-wave analysis results is investigated as the number of grating periods and the incident beam size increase. (C) 2008 Optical Society of America.	en
heal.publisher	OPTICAL SOC AMER	en
heal.journalName	Applied Optics	en
dc.identifier.doi	10.1364/AO.47.001981	en
dc.identifier.isi	ISI:000255761900005	en
dc.identifier.volume	47	en
dc.identifier.issue	12	en
dc.identifier.spage	1981	en
dc.identifier.epage	1994	en