High-efficiency aperiodic two-dimensional high-contrast-grating hologram

Pengfei Qiao; Li Zhu; Connie J. Chang-Hasnain

doi:10.1117/12.2212981

15 March 2016 High-efficiency aperiodic two-dimensional high-contrast-grating hologram

Pengfei Qiao, Li Zhu, Connie J. Chang-Hasnain

Proceedings Volume 9757, High Contrast Metastructures V; 975708 (2016) https://doi.org/10.1117/12.2212981
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

High efficiency phase holograms are designed and implemented using aperiodic two-dimensional (2D) high-contrast gratings (HCGs). With our design algorithm and an in-house developed rigorous coupled-wave analysis (RCWA) package for periodic 2D HCGs, the structural parameters are obtained to achieve a full 360-degree phase-tuning range of the reflected or transmitted wave, while maintaining the power efficiency above 90%. For given far-field patterns or 3D objects to reconstruct, we can generate the near-field phase distribution through an iterative process. The aperiodic HCG phase plates we design for holograms are pixelated, and the local geometric parameters for each pixel to achieve desired phase alternation are extracted from our periodic HCG designs. Our aperiodic HCG holograms are simulated using the 3D finite-difference time-domain method. The simulation results confirm that the desired far-field patterns are successfully produced under illumination at the designed wavelength. The HCG holograms are implemented on the quartz wafers, using amorphous silicon as the high-index material. We propose HCG designs at both visible and infrared wavelengths, and our simulation confirms the reconstruction of 3D objects. The high-contrast gratings allow us to realize low-cost, compact, flat, and integrable holograms with sub-micrometer thicknesses.

Citation Download Citation

Pengfei Qiao, Li Zhu, and Connie J. Chang-Hasnain "High-efficiency aperiodic two-dimensional high-contrast-grating hologram", Proc. SPIE 9757, High Contrast Metastructures V, 975708 (15 March 2016); https://doi.org/10.1117/12.2212981

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available