The multiple-grating vector vortex coronagraph (Conference Presentation)

2019 ◽  
Author(s):  
Frans Snik ◽  
David Doelman ◽  
Steven Bos ◽  
Mireille Ouellet ◽  
Michael Escuti ◽  
...  
Keyword(s):  
Grating Vector

Photorefractive optical properties of volume phase gratings induced in sillenite crystals, when the grating vector lies on the (111) plane

2000 ◽  
Vol 71 (6) ◽  
pp. 841-848 ◽  
Author(s):  
D.G. Papazoglou ◽  
N.C. Deliolanis ◽  
A.G. Apostolidis ◽  
E.D. Vanidhis
Keyword(s):  
Optical Properties ◽  
Volume Phase ◽  
Grating Vector

Grating-Vector-Assisted Plasmonic Coupling in a Hexagonally Arranged Silver Island Array

Plasmonics ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. 1049-1056 ◽  
Author(s):  
Kuo Pin Chiu ◽  
Yun Chorng Chang ◽  
Chiau Yuan Lai ◽  
Shih Hsuan Chen ◽  
Tsung Jhe Wu ◽  
...  
Keyword(s):  
Plasmonic Coupling ◽  
Silver Island ◽  
Grating Vector

Mixed phase and absorption thin gratings diffraction

2007 ◽  
Vol 15 (1) ◽  
Author(s):  
G. Zakharyan ◽  
A. Galstyan
Keyword(s):  
Wave Front ◽  
Liquid Crystalline ◽  
Wave Theory ◽  
Mixed Phase ◽  
Organic Crystals ◽  
Energy Propagation ◽  
Isotropic Media ◽  
The Difference ◽  
Grating Vector ◽  
Coupled Wave

AbstractThe coupled wave theory of Raman and Nath diffraction is extended to the case of thin anisotropic holographic media with grating vector parallel to the medium boundaries. Solutions for the wave amplitudes, diffraction efficiencies, and angular mismatch sensitivities are given in transmission geometries for the case of mixed dielectric and absorption modulations. For an apparent distinction, the results are given only for dielectric modulation. The main difference of the new results, with respect to the expressions valid for isotropic media, arises due to the walk-off between the wave-front and energy propagation directions. The difference is particularly important in materials with large birefringence, such as organic crystals, ordered polymers, and liquid crystalline cells.

Cholesteric diffraction devices with a field-controlled grating vector

1998 ◽  
Author(s):  
Sergey V. Shiyanovskii ◽  
Darius Subacius ◽  
Dmitry Voloschenko ◽  
Philip J. Bos ◽  
Oleg D. Lavrentovich
Keyword(s):  
Grating Vector

From partial to complete optical erasure of azobenzene–polymer gratings: effect of molecular weight

2015 ◽  
Vol 3 (42) ◽  
pp. 11011-11016 ◽  
Author(s):  
Jaana Vapaavuori ◽  
Robin H. A. Ras ◽  
Matti Kaivola ◽  
C. Geraldine Bazuin ◽  
Arri Priimagi
Keyword(s):  
Modulation Depth ◽  
Complex Surface ◽  
Ambient Conditions ◽  
Azobenzene Polymer ◽  
High Modulation ◽  
All Optical ◽  
Surface Patterns ◽  
Spatially Varying ◽  
Polymer Gratings ◽  
Grating Vector

We demonstrate complete all-optical erasure of high-modulation-depth azopolymer surface patterns at ambient conditions. Applying selective optical erasure and rewriting can be translated into complex surface patterns with spatially varying grating vector directions.

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