Dielectric transmission gratings with a similar period as the wavelength of the incident light can exhibit strong polarization dependence. By optimizing the groove width of a negative first-order Littrow transmission grating it can be achieved that light is transmitted to the zeroth order for one polarization, regardless of the groove depth, while it is efficiently diffracted for the other polarization. An investigation of this remarkable effect, based on a modal field representation inside the grating, as well as experimental results are presented.
© 2007 Optical Society of America
Diffraction and Gratings
Original Manuscript: June 27, 2006
Revised Manuscript: October 2, 2006
Manuscript Accepted: October 11, 2006
Published: February 2, 2007
Tina Clausnitzer, Thomas Kämpfe, Ernst-Bernhard Kley, Andreas Tünnermann, Alexandre Tishchenko, and Olivier Parriaux, "Investigation of the polarization-dependent diffraction of deep dielectric rectangular transmission gratings illuminated in Littrow mounting," Appl. Opt. 46, 819-826 (2007)