Hyperuniform disordered waveguides and devices for near infrared silicon photonics

Milošević, Milan; Man, Weining; Nahal, Geev; Steinhardt, Paul J.; Torquato, Salvatore; Chaikin, P. M.; Amoah, Timothy; Yu, Bowen; Mullen, Ruth Ann; Florescu, Marian

doi:10.1038/s41598-019-56692-5

Cited by 34 publications

(39 citation statements)

References 60 publications

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“…Our results lend support to recent numerical predictions and shed new light on the interplay between disorder and correlations [10]. We believe this will have significant consequences for the design of photonic materials, such as two-dimensional nanostructured materials for light harvesting in solar cells [36] or light guiding in all-optical circuit applications [37]. G. A., L. S. F., and F. S. acknowledge funding by the Swiss National Science Foundation through Projects No.…”

supporting

confidence: 84%

Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials

Aubry¹,

Froufe‐Pérez²,

Kuhl³

et al. 2020

Phys. Rev. Lett.

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We present wave transport experiments in hyperuniform disordered arrays of cylinders with high dielectric permittivity. Using microwaves, we show that the same material can display transparency, photon diffusion, Anderson localization, or a full band gap, depending on the frequency ν of the electromagnetic wave. Interestingly, we find a second weaker band gap, which appears to be related to the second peak of the structure factor. Our results emphasize the importance of spatial correlations on different length scales for the formation of photonic band gaps.

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supporting

confidence: 84%

Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials

Aubry¹,

Froufe‐Pérez²,

Kuhl³

et al. 2020

Phys. Rev. Lett.

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“…30 As a result, HUDs display allowed modes that can propagate through the structure in an isotropic fashion as in random media. HUDs are a highly flexible platform to control light transport, emission and absorption in unique ways, beyond the constraints imposed by conventional photonic architectures, [38][39][40][41][42] for the design of freeform waveguides, 43 high-quality factor resonant defects and arbitrarily high-order power splitters, 44,45 hollowcore fibers 46 and photonic bandgap polarizers 47 among others.…”

mentioning

confidence: 99%

Over 65% sunlight absorption in a 1 μm Si slab with hyperuniform texture

Tavakoli¹,

Spalding²,

Koppejan³

et al. 2020

Preprint

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Thin, flexible and invisible solar cells will be an ubiquitous technology in the near future. Ultrathin crystalline silicon (c-Si) cells capitalise on the success of bulk silicon cells while being light-weight and mechanically flexible, but suffer from poor absorption and efficiency. Here we present a new family of surface texturing, based on correlated disordered hyperuniform patterns, capable of efficiently coupling the incident spectrum into the silicon slab optical modes. We experimentally demonstrate 66.5% solar light absorption in free-standing 1 µm c-Si layers by hyperuniform nanostructuring. The absorption equivalent photocurrent derived from our measurements is 26.3 mA/cm2, which is far above the highest found in literature for Si of similar thickness. Considering state-of-the-art Si PV technologies, the enhanced light trapping translates to a record efficiency above 15%. The light absorption can potentially be increased up to 33.8 mA/cm2 by incorporating a back-reflector and improved anti-reflection, for which we estimate a photovoltaic efficiency above 21% for 1 µm thick Si cells.

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“…On the other hand, the concept of designed disorder [38] is becoming an intense field of research with applications ranging from the fabrication of waveguides polarizering to light harvesting [39][40][41]. In fact, in some cases, disordered structures, even if fully deterministic, can be more favorable for specific tasks than periodic ones.…”

Section: Designed Disorder In Glass Fibersmentioning

confidence: 99%

Transverse and Quantum Localization of Light: A Review on Theory and Experiments

et al. 2021

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Anderson localization is an interference effect yielding a drastic reduction of diffusion—including complete hindrance—of wave packets such as sound, electromagnetic waves, and particle wave functions in the presence of strong disorder. In optics, this effect has been observed and demonstrated unquestionably only in dimensionally reduced systems. In particular, transverse localization (TL) occurs in optical fibers, which are disordered orthogonal to and translationally invariant along the propagation direction. The resonant and tube-shaped localized states act as micro-fiber-like single-mode transmission channels. Since the proposal of the first TL models in the early eighties, the fabrication technology and experimental probing techniques took giant steps forwards: TL has been observed in photo-refractive crystals, in plastic optical fibers, and also in glassy platforms, while employing direct laser writing is now possible to tailor and “design” disorder. This review covers all these aspects that are today making TL closer to applications such as quantum communication or image transport. We first discuss nonlinear optical phenomena in the TL regime, enabling steering of optical communication channels. We further report on an experiment testing the traditional, approximate way of introducing disorder into Maxwell’s equations for the description of TL. We find that it does not agree with our findings for the average localization length. We present a new theory, which does not involve an approximation and which agrees with our findings. Finally, we report on some quantum aspects, showing how a single-photon state can be localized in some of its inner degrees of freedom and how quantum phenomena can be employed to secure a quantum communication channel.

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Hyperuniform disordered waveguides and devices for near infrared silicon photonics

Cited by 34 publications

References 60 publications

Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials

Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials

Over 65% sunlight absorption in a 1 μm Si slab with hyperuniform texture

Transverse and Quantum Localization of Light: A Review on Theory and Experiments

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