Interferometer apparatus
AssigneeNIREOS S.r.l
InventorAntonio PERRI
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Abstract
An interferometer apparatus comprises an adjustable birefringent device configured to receive an input radiation and produce corresponding replicas having reciprocally orthogonal polarizations and delayed from each other by an adjustable time delay. The birefringent device also introduces an additional time delay between the replicas. The interferometer apparatus also comprises a compensation optical device optically coupled to the adjustable birefringent device and configured to have a respective structural thickness and respective ordinary and extraordinary refractive indexes to introduce a compensation time delay between the replicas having a sign opposite to a sign of the additional time delay.
Claims14
An interferometer apparatus comprising:
- an adjustable birefringent device configured to:
- receive an input radiation (INR) and produce corresponding replicas (e, o) having reciprocally orthogonal polarizations and delayed from each other by an adjustable time delay depending on a configuration assumed by the adjustable birefringent device;
- introduce an additional time delay between said replicas (e, o) dependent on angles of incidence (i, ω) of said input radiation on the adjustable birefringent device, which wherein the angles of incidence (i, ω) is a function of a structural thickness and an ordinary and an extraordinary refractive indexes of the adjustable birefringent device;
- a compensation optical device that is optically coupled to said adjustable birefringent device and configured to have a respective structural thickness and respective ordinary and extraordinary refractive indexes so as to introduce an at least a partial compensation time delay between said replicas having a sign opposite to a sign of the additional time delay.
Dependencies are inferred from the claim text.