Engineering spin and antiferromagnetic resonances to realize an efficient direction-multiplexed visible meta-hologram

Date

2020-01-01

Author

Ansari, Muhammad Afnan
Kim, Inki
Rukhlenko, Ivan D.
Zubair, Muhammad
Yerci, Selçuk
Tauqeer, Tauseef
Mehmood, Muhammad Qasim
Rho, Junsuk

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

166
views

0
downloads

Driven by the need for enhanced integrated performance and rapid development of ultrathin multitasked optical devices, this paper experimentally demonstrates monolayer direction-controlled multiplexing of a transmissive meta-hologram in the visible domain. The directional sensitivity is designed by imparting direction-controlled spin-dependent holographic recordings in the monolayer structure. The designed metasurface hologram consists of nano half-waveplates (HWPs) of low loss hydrogenated amorphous silicon (a-Si:H). These nano-featured HWPs are carefully designed and optimized for circularly polarized (CP) illumination to not only excite electric and magnetic resonances simultaneously but also to excite antiferromagnetic modes to ensure high transmission for the cross CP-light. The antiferromagnetic modes are excited in such a way that the transmitted CP-light maintains the Ex component of the incident CP-light through even antiparallel magnetic dipoles while they reverse the E-y component via odd antiparallel magnetic dipoles. As compared to the standard amorphous silicon, our a-Si:H exhibits a much lower absorption coefficient in the visible domain. The proposed single-layer design is an advanced step towards scalability, low-cost fabrication, and on-chip implementation of novel metasurfaces with substantially higher performance in the visible domain.

Subject Keywords

Asymmetric transmission, Achromatic metalens, Metasurface, Silicon, Phase, Optics

URI

https://hdl.handle.net/11511/31701

Journal

NANOSCALE HORIZONS

DOI

https://doi.org/10.1039/c9nh00460b

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Design and analysis of ultrashort femtosecond laser amplifiers Doğan, Ersin; Bilikmen, Kadri Sinan; Department of Physics (2006) This thesis presents a compact femtosecond laser amplifier design for optical preamplifiers and power amplifiers consist of theoretical perspective, simulations to analyze and optimize beam performance. The propagation through optical media is simulated for every optical component such as mirrors and nonlinear crystal separately and suggested realignment of these components required increasing amplifier performance. Finally Gaussian beam propagation and aberration compensation has been conducted.
Advanced Design of Schottky Photodiodes in Bulk CMOS for High Speed Optical Receivers Orsel, Ogulcan Emre; Erdil, Mertcan; Kocaman, Serdar (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-01) This paper provides theoretical insight on how circular Schottky photodiodes in bulk CMOS can be optimized for certain integrated receiver applications. An optimal photodiode size is analytically demonstrated and the effects of a metal plate reflector are simulated using a transfer-matrix method, both for frontside and backside illumination. Finally, a distributed circuit model is presented, which deviates from the classical lumped model for large photodiodes or sheet resistances. The presented methodologie...
Integrated optical modulators with zero index metamaterials based on photonic crystal slab waveguides Yildirim, Mustafa; GÖVDELİ, ALPEREN; Kocaman, Serdar (2019-01-01) A novel integrated optical modulator design is presented using zero index metamaterial-based Mach-Zehnder Interferometer with photonic crystal phase shifters. The phase modulation relies on the shift between the photonic bandgaps having non-zero and zero effective refractive indices. A small change in the bulk index results in an effective index change between the arms of the MZI due to the disturbance of the band structure. Thus, such a structure provides a new approach for phase modulation on integrated o...
Dynamic analysis of CMUTs in different regimes of operation Bayram, Barış; Ergun, AS; Yaralioglu, GG; Khuri-Yakub, BT (2003-01-01) This paper reports on dynamic analysis of an immersed single capacitive micromachined ultrasonic transducer (CMUT) cell transmitting. A water loaded 24 mum circular silicon membrane of a transducer was modeled. The calculated collapse and snapback voltages were 80 V and 50 V, respectively. The resonance frequency, output pressure and nonlinearity of the CMUT in three regimes of operation were determined. These regimes were: a) the conventional regime in which the membrane does not make contact with the subs...
Development of a compact time-domain terahertz spectrometer using photoconductive antenna detection method Güngör Erözbek, Ümmügül; Altan, Hakan; Department of Physics (2009) In this thesis, we describe the development of a time-domain terahertz (THz) spectrometer driven by two different laser sources: an Er-doped femtosecond fiber laser and a mode-locked Ti:Sapphire laser. The resulting THz electromagnetic radiation was generated and detected using photoconductive antenna detection methods in both systems. In these experiments we characterized the THz power output for both the fiber laser driven system and the Ti:Sapphire laser driven system. Emphasis is given throughout this t...

Citation Formats

M. A. Ansari et al., “Engineering spin and antiferromagnetic resonances to realize an efficient direction-multiplexed visible meta-hologram,” NANOSCALE HORIZONS, pp. 57–64, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31701.