Digital polarization holography advancing 4G optics
(Conference Presentation)

Luciano De Sio; David E. Roberts; Nelson V. Tabiryan; Diane M. Steeves; Brian R. Kimball

doi:10.1117/12.2235859

3 November 2016 Digital polarization holography advancing 4G optics (Conference Presentation)

Luciano De Sio, David E. Roberts, Nelson V. Tabiryan, Diane M. Steeves, Brian R. Kimball

Proceedings Volume 9940, Liquid Crystals XX; 994007 (2016) https://doi.org/10.1117/12.2235859
Event: SPIE Organic Photonics + Electronics, 2016, San Diego, California, United States

Abstract

The fourth generation optics (4G optics) enables the realization of novel optical components (lenses, gratings, vector vortices, etc.) by patterning the optical axis orientation in the plane of an anisotropic film. Such components exhibit near 100% diffraction efficiency for wavelengths meeting half-wave retardation condition. In this framework, we have advanced a step-forward by realizing different diffractive waveplates (DWs) with arbitrary spatial patterns of the optical axis orientation by exploiting the capability of a Digital Spatial Light Polarization Converter (DSLPC). The DSLPC is based on a reflective, high resolution Spatial Light Modulator (SLM) combined with an “ad hoc” optical setup. The most attractive feature of the use of a DSLPC for photoalignment is that the orientation of the alignment layer, and therefore of the fabricated liquid crystal (LC) or liquid crystal polymer (LCP) DWs, can be specified on a pixel-by-pixel basis. By varying the optical magnification or de-magnification between the SLM and the alignment layer, the spatial resolution of the photoaligned layer can be adjusted to be optimal for each application. We show that with a simple “click” it is possible to record different high resolution optical components as well as arbitrary patterns ranging from lenses to invisible and even dual labels.

Conference Presentation

Citation Download Citation

Luciano De Sio, David E. Roberts, Nelson V. Tabiryan, Diane M. Steeves, and Brian R. Kimball "Digital polarization holography advancing 4G optics (Conference Presentation)", Proc. SPIE 9940, Liquid Crystals XX, 994007 (3 November 2016); https://doi.org/10.1117/12.2235859

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KEYWORDS

Liquid crystals

Polarization

Spatial light modulators

Digital holography

Holography

Lenses

Optical alignment

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