# A Modal Analysis of Lamellar Diffraction Gratings in Conical Mountings

Li 1993: Takes Botten's modal analysis off the plane of incidence. In a conical mount the field in the grating region is split into two orthogonal…

Canonical: https://mcgrating.com/publications/li-1993-modal-analysis-lamellar-conical.html


Lifeng Li

Lifeng Li, “A Modal Analysis of Lamellar Diffraction Gratings in Conical Mountings”, Journal of Modern Optics **40**, 553-573 (1993). [https://doi.org/10.1080/09500349314550631](https://doi.org/10.1080/09500349314550631)

Takes Botten's modal analysis off the plane of incidence. In a conical mount the field in the grating region is split into two orthogonal components, each expanded in the lamellar modes, and the resulting program handles dielectric and metallic gratings with deep grooves at arbitrary angles of incidence and arbitrary incident polarization.

Modal Conical is the conical-mount modal code; it accepts the structure files of Modal Collinear and, as the product page says, runs about eight times slower for the extra generality.

**Implemented in**: [Modal Conical](https://mcgrating.com/products.html#modal-conical)

**Cited on**: [The modal method (RCWA / FMM)](https://mcgrating.com/features/modal-method.html)

**Bibliography**: [Reference [8]](https://mcgrating.com/references.html#ref-8)

**Full text**: [A Modal Analysis of Lamellar Diffraction Gratings in Conical Mountings](https://mcgrating.com/references/ref08.pdf) (PDF, 309 KB)

© 1993 Informa UK Limited. This copy is hosted for the convenience of MC Grating users; the version of record is the publisher's, at the DOI above.

MC Grating is Windows software that computes diffraction gratings by [the modal method](https://mcgrating.com/features/modal-method.html) and [the C method](https://mcgrating.com/features/c-method.html). [The download page](https://mcgrating.com/download.html) has the current release, which runs in demo mode without a license key.