Optimizing the generalized phase contrast method for a planar optical device

Vincent R. Daria; René L. Eriksen; Stefan Sinzinger; Jesper Glückstad

doi:10.1088/1464-4258/5/5/367

Optimizing the generalized phase contrast method for a planar optical device

Vincent R. Daria, René L. Eriksen, Stefan Sinzinger, Jesper Glückstad^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We analyse and optimize the output of a planar optical device implementing the generalized phase contrast method. Surface-integrated diffractive micro-optical components build up a spatial filtering-based common-path interferometer consisting of a 4 f lens configuration with a phase contrast filter etched as a 5 μm diameter steep-edged cylindrical hole at the Fourier plane. This filter is designed for operation at λ = 632.8 nm and carries out a phase shift of π for the on-axis region of the focused light. The performance of the device is analysed in terms of throughput and visibility of input phase patterns. A practical design for improved performance is also evaluated for application in visualization of two-dimensional phase patterns as applied in electro-optical data communications, particularly in security and product authenticity verification applications.

Original language	English
Pages (from-to)	S211-S215
Journal	Journal of Optics A: Pure and Applied Optics
Volume	5
Issue number	5
DOIs	https://doi.org/10.1088/1464-4258/5/5/367
Publication status	Published - Sept 2003
Externally published	Yes

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AB - We analyse and optimize the output of a planar optical device implementing the generalized phase contrast method. Surface-integrated diffractive micro-optical components build up a spatial filtering-based common-path interferometer consisting of a 4 f lens configuration with a phase contrast filter etched as a 5 μm diameter steep-edged cylindrical hole at the Fourier plane. This filter is designed for operation at λ = 632.8 nm and carries out a phase shift of π for the on-axis region of the focused light. The performance of the device is analysed in terms of throughput and visibility of input phase patterns. A practical design for improved performance is also evaluated for application in visualization of two-dimensional phase patterns as applied in electro-optical data communications, particularly in security and product authenticity verification applications.

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Optimizing the generalized phase contrast method for a planar optical device

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