Evaluation of the shadow effect in terahertz kinoform gratings
Jarosław Suszek , Maciej Sypek , Michał Makowski , F. Garet , Izabela Ducin , Karol Kakarenko , Jarosław Bomba , J.-L. Coutaz
AbstractThe experimental and numerical evaluation of the shadow effect in kinoform diffractive gratings for the terahertz (THz) range is given. This effect limits the diffractive efficiency of dense gratings, which are the base of the elements suited for convenient beam focusing and imaging in THz. The observed effect of redirecting most of the incident energy into stray -1st diffractive order is observed and discussed. The presented results show the great significance of the shadow effect in selected kinoform gratings and prove the utility of the used methodology of numerical simulations. © 2013 Optical Society of America.
|Journal series||Optics Letters, ISSN 0146-9592|
|Score|| = 45.0, 10-06-2020, ArticleFromJournal|
= 45.0, 10-06-2020, ArticleFromJournal
|Publication indicators||= 5; = 4; = 6.0; : 2013 = 2.058; : 2013 = 3.179 (2) - 2013=3.119 (5)|
|Citation count*||6 (2020-09-09)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.