Experimental Demonstration of an Omni-Resonant Optical Micro-cavity

Shabahang, Soroush; Kondakci, H. Esat; Villinger, Massimo L.; Perlstein, Joshua; Abouraddy, Ayman F.

doi:10.1364/cleo_si.2017.sm1n.1

Cited by 1 publication

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another potential approach is to explore the idea of omni-resonance. 48 Omniresonance is a broadband resonance enabled by matching the incident angles of each wavelength with the energy-momentum spectrum (also known as the E-k spectrum) of the resonant structure. However, this approach will limit the system's field of view (FOV) because of the stringent angle-wavelength matching condition.…”

Section: Discussionmentioning

confidence: 99%

Nonvolatile Phase-Only Transmissive Spatial Light Modulator with Electrical Addressability of Individual Pixels

Fang,

Chen,

Fröch

et al. 2024

ACS Nano

View full text Add to dashboard Cite

Active metasurfaces with tunable subwavelengthscale nanoscatterers are promising platforms for high-performance spatial light modulators (SLMs). Among the tuning methods, phase-change materials (PCMs) are attractive because of their nonvolatile, threshold-driven, and drastic optical modulation, rendering zero-static power, crosstalk immunity, and compact pixels. However, current electrically controlled PCM-based metasurfaces are limited to global amplitude modulation, which is insufficient for SLMs. Here, an individual-pixel addressable, transmissive metasurface is experimentally demonstrated using the low-loss PCM Sb 2 Se 3 and doped silicon nanowire heaters. The nanowires simultaneously form a diatomic metasurface, supporting a high-quality-factor (∼406) quasi-bound-state-in-the-continuum mode. A global phase-only modulation of ∼0.25π (∼0.2π) in simulation (experiment) is achieved, showing ten times enhancement. A 2π phase shift is further obtained using a guided-mode resonance with enhanced light-Sb 2 Se 3 interaction. Finally, individual-pixel addressability and SLM functionality are demonstrated through deterministic multilevel switching (ten levels) and tunable far-field beam shaping. Our work presents zero-static power transmissive phase-only SLMs, enabled by electrically controlled low-loss PCMs and individual meta-molecule addressable metasurfaces.

show abstract

Section: Discussionmentioning

confidence: 99%