Numerical results for plane-wave scattering from a perfectly conducting diffraction grating with triangular groove profile show that simultaneous blazing with 100% efficiency in both polarizations is obtainable in a Littrow arrangement. The range of angles of incidence, for which such simultaneous blazing occurs, is considerably narrower than that obtainable with a rectangular groove profile.
© 1978 Optical Society of America
L. S. Cheo, J. Shmoys, and A. Hessel, "On simultaneous blazing of triangular groove diffraction gratings," J. Opt. Soc. Am. 67, 1686-1688 (1977)