Prof. Jie Yao Profile

Prof. Jie Yao

Professor at Univ of California Berkeley

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Publications (7)

SPIE Journal Paper | 14 August 2024 Open Access

Programmable phase change materials and silicon photonics co-integration for photonic memory applications: a systematic study

Amin Shafiee, Benoit Charbonnier, Jie Yao, Sudeep Pasricha, Mahdi Nikdast

JOM, Vol. 4, Issue 03, 031208, (August 2024) https://doi.org/10.1117/12.10.1117/1.JOM.4.3.031208

KEYWORDS: Waveguides, Optical transmission, Silicon, Crystals, Crystallization, Design, Photonic crystals, Silicon nitride, Silicon photonics, Refractive index

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Proceedings Article | 13 March 2024 Presentation

High imaginary permittivity metaphotonics and twisted photonics

Jie Yao

Proceedings Volume PC12897, PC128970Z (2024) https://doi.org/10.1117/12.3003630

KEYWORDS: Photonics, Photonic crystals, Ultraviolet radiation, 2D materials, Systems modeling, Silicon, Second harmonic generation, Photonics systems, Performance modeling, Optical vortices

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Proceedings Article | 3 October 2022 Presentation

Light-matter interaction with a twist- from 2D materials to photonic crystals

Jie Yao

Proceedings Volume PC12196, PC121960O (2022) https://doi.org/10.1117/12.2634176

KEYWORDS: Photonic crystals, Light-matter interactions, Photonics systems, Graphene, Resonance enhancement, Photon counting, Moire patterns, Harmonic generation, Germanium

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Proceedings Article | 8 March 2019 Presentation

Ultraviolet metasurface based on highly scattering silicon antennas (Conference Presentation)

Yang Deng, Xi Wang, Zilun Gong, Kaichen Dong, Shuai Lou, Nicolas Pégard, Kyle Tom, Fuyi Yang, Laura Waller, Zheng You, Jie Yao

Proceedings Volume 10928, 1092806 (2019) https://doi.org/10.1117/12.2508169

KEYWORDS: Ultraviolet radiation, Silicon, Scattering, Antennas, Light scattering, Optical lithography, Diffraction, Integrated optics, UV optics, System integration

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Proceedings Article | 17 September 2018 Presentation

Exploring novel material platforms for metaphotonics (Conference Presentation)

Jie Yao

Proceedings Volume 10719, 1071922 (2018) https://doi.org/10.1117/12.2323377

KEYWORDS: Metamaterials, Geometrical optics, Solid phase epitaxy, Optical design, Optical properties, Metals, Photonic devices, Light wave propagation, Polarization, Chemical elements

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Metamaterials have revolutionized the ways we control light and design optical materials. Researchers have been highly successful in designing sub-wavelength “meta-atoms” to achieve new optical functionalities. On the other hand, “meta-atoms” have to be made of natural materials, therefore one can further tune the responses of metamaterials by varying the constituent natural materials and achieve even broader range of optical properties. In my research lab, we conduct extensive exploration of optical materials beyond the widely used noble metals to achieve novel capabilities of metaphotonic systems. Here I would like to share some of our recent progresses on implementing new material platforms in metaphotonics: First I will present an all-solid, rewritable metacanvas using phase change materials, on which arbitrary photonic devices can be rapidly and repeatedly written and erased for real-time manipulation of light waves. Different patterns can be written and erased on the same metacanvas with a low-power laser. Dynamic manipulation of optical waves is demonstrated with the metacanvas, specifically light propagation, polarization, and reconstruction. This dynamic optical system without moving parts opens possibilities where photonic elements can be field-programmed to deliver complex, system-level functionalities. We have also demonstrated a simple bottom-up approach to create self-assembled, nanostructured metamaterials with controllable structural geometry and temperature-tunable optical response from spinodally-decomposed VO2-TiO2 epitaxial thin films. As-grown solid solution films are driven to phase separate upon post-annealing and we demonstrate the ability to deterministically create horizontally- or vertically-aligned lamellae consisting of Ti- and V-rich phases. The optical iso-frequency surface of the self-assembled nanostructures can be made to exhibit a temperature-tunable transition from elliptic to hyperbolic dispersion in the near-infrared range and thus the formation of hyperbolic metamaterial response. Lastly, I will talk about our recent efforts in achieving functional metasurfaces in the UV range by introducing new material platforms and new light-manipulation mechanisms.

Proceedings Article | 5 October 2015 Presentation

Optical property tuning of bismuth chalcogenides using chemical intercalation (Presentation Recording)

Jie Yao

Proceedings Volume 9545, 95450K (2015) https://doi.org/10.1117/12.2189012

KEYWORDS: Bismuth, Chalcogenides, Optical properties, Chemical species, Copper, Electrons, Nanophotonics, Transparency, Doping, Semiconductor materials

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Proceedings Article | 30 August 2006 Paper

Surface plasmon beats formed on thin metal films

Jie Yao, Yongmin Liu, Zhaowei Liu, Cheng Sun, Xiang Zhang

Proceedings Volume 6323, 63231K (2006) https://doi.org/10.1117/12.681465

KEYWORDS: Surface plasmons, Metals, Dispersion, Silver, Near field scanning optical microscopy, Dielectrics, Thin films, Interfaces, Signal detection, Wave propagation

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