منابع مشابه
Pseudospectral Modal Method for Conical Diffraction of Gratings
For lamellar gratings and other layered periodic structures, the modal methods (including both analytic and numerical ones) are often the most efficient, since they avoid the discretization of one spatial variable. The pseudospectral modal method (PSMM) previously developed for in-plane diffraction problems of one-dimensional gratings achieves high accuracy for a small number of discretization ...
متن کاملFourier-matching pseudospectral modal method for diffraction gratings.
A Fourier-matching pseudospectral modal method [PSMM(f)] is developed for analyzing lamellar diffraction gratings or grating stacks. A Chebyshev pseudospectral method is first used to accurately calculate the eigenmodes of the grating layers, and then the Fourier coefficients are matched at the interfaces between the layers. Compared with an existing pseudospectral modal method based on point m...
متن کاملHigh Order Finite Difference Modal Method for Diffraction Gratings
A new high order finite difference modal method (FDMM) is developed for analyzing diffraction gratings in conical and classical mountings. The difference scheme is constructed by enforcing the internal interface conditions in each grating layer to high order derivatives, and it gives a high order of accuracy for computing the eigenmodes of the grating layer. Between different layers, the interf...
متن کاملA modal analysis of lamellar diffraction gratings in conical mountings
A rigorous modal analysis of lamellar gratings, i.e . gratings having rectangular grooves, in conical mountings is presented . It is an extension of the analysis of Botten et al . which considered non-conical mountings. A key step in the extension is a decomposition of the electromagnetic field in the grating region into two orthogonal components. A computer program implementing this extended m...
متن کاملStretchable diffraction gratings for spectrometry.
We have investigated the possibility of using transparent stretchable diffraction gratings for spectrometric applications. The gratings were fabricated by replication of a triangular-groove master into a transparent viscoelastic. The sample length, and hence the spatial period, can be reversibly changed by mechanical stretching. When used in a monochromator with two slits, the stretchable grati...
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ژورنال
عنوان ژورنال: Journal of Modern Optics
سال: 2003
ISSN: 0950-0340,1362-3044
DOI: 10.1080/0950034031000064834