Back to results
US 5,289,308 AGranted
Method of making a frequency doubling structure in an optically non-linear medium
AssigneeAkzo N.V.
InventorsWinfried H. G. Horsthuis, Gustaaf R. Mohlmann
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAkzo N.V.
InventorsWinfried H. G. Horsthuis, Gustaaf R. Mohlmann
Estimating the term…
In an optically non-linear (NLO) polymeric material a frequency doubling structure composed of alternatingly poled NLO polymer is made. This structure can be made by forming a layer of NLO polymer, effecting poling in it with the use of an electric field, partially removing the layer of NLO polymer by etching, such that in the polymer a grating structure is formed composed of etched grooves and projecting polymer parts, the width of the grooves matching that of the polymer parts, dividing the polymer layer containing the grating structure into at least two sections, and placing the two sections one on top of the other, such that grooves of the one section are back-filled by projecting polymer parts of the other section. To prevent the enclosure of air a filler may be added, preferably in the form of a solution of the NLO polymer.
A method of making a frequency doubling structure in an optically non-linear polymeric material, in which method alternating poling is effected in the optically non-linear material which comprises the following steps:
Dependencies are inferred from the claim text.