Perfect blazing with echelle gratings in Littrow mount
- Carl Zeiss AG
berndkleemann [at] web [dot] de
Perfect blazing with echelle gratings in a high order Littrow mount exists simultaneously in TE and TM polarizations /1/. This finding contradicts with a heuristic explanation as why perfect blazing is not possible simultaneously in TE and TM polarizations given in (E. G. Loewen and E. Popov, Diffraction Gratings and Applications, New York: Marcel Dekker (1997)). As a matter of fact, in the ideal case of infinite conductivity, light is diffracted in the Littrow order with 100% efficiency for both polarization states. For metal gratings a small loss occurs. Three conditions are necessary for perfect blazing. The most intriguing property is the blaze angle being 4° to 6° larger than the Littrow angle. Typically the difference between the two angles is smaller than 1.0°. The ingredients for perfect blazing are shown and its behaviour and further conditions are discussed. /1/ Bernd H. Kleemann, "Perfect blazing with echelle gratings in TE and TM polarization", Opt. Lett., accepted for publication.
@inproceedings{kleemann2012b23,
author = {Kleemann, Bernd H.},
title = {{Perfect blazing with echelle gratings in Littrow mount}},
booktitle = {DGaO-Proceedings 2012},
series = {DGaO-Proceedings},
eventtitle = {113. Jahrestagung der DGaO},
eventdate = {2012-05-30/2012-06-02},
venue = {Eindhoven},
publisher = {Deutsche Gesellschaft für angewandte Optik e.V.},
year = {2012},
pages = {B23},
langid = {english},
url = {https://dgao-proceedings.de/paper/113-b23}
}