Session Index

S1. Nanophotonic Materials and Devices

Nanophotonic Materials and Devices IV
Saturday, Dec. 3, 2022  13:00-15:15
Presider: Cheng-Hung Chu、Che-Chin Chen
Room: B1 A003
13:00 - 13:15
Manuscript ID.  0090
Paper No.  2022-SAT-S0104-O001
Ming Lun Tseng Vacuum Ultraviolet Nonlinear Metalens
Ming Lun Tseng, National Yang Ming Chiao Tung University (Taiwan); Michael Semmlinger, Ming Zhang, Catherine Arndt, Rice University (USA); Tzu-Ting Huang, Academia Sinica (Taiwan); Jian Yang, Rice University (USA); Vin-Cent Su, National United University (Taiwan); Mu Ku Chen, City University of Hong Kong (Hong Kong); Cheng Hung Chu, Academia Sinica (Taiwan); Din Ping Tsai, City University of Hong Kong (Hong Kong), National Taiwan University (Taiwan); Peter Nordlander, Rice University (USA); Naomi J. Halas, Rice University (Taiwan), Rice University (USA)

Vacuum ultraviolet (VUV) light is essential to practical applications ranging from nanolithography, biosensing, and spectroscopy. However, it is usually challenging to realize efficient and compact VUV devices. In this work, we report a metalens consisting of ZnO nanoantennas for nonlinear light generating and focusing 197-nm VUV light.

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13:15 - 13:30
Manuscript ID.  0315
Paper No.  2022-SAT-S0104-O002
Wei-Cheng Tsai Design of high efficiency and large-angle homo-metagratings for light source integration
Wei-Cheng Tsai, Hao-Chung Kuo, Yao-Wei Huang, National Yang Ming Chiao Tung University (Taiwan)

Meta-optics is the subject of growing interest recently; however, some of research are emphasized the efficiency of the metasurfaces itself. Substrate with low refractive materials (e.g., glass) are selected without considering the refractive index matching problem for a compact integration with lasers. To increase efficiency, here, we design our meta-grating as homo-grating, aka same material for the meta-atoms, the substrate, and the top layer of the laser, to avoid mismatch issue. We achieve absolute efficiency more than 50% at a deflection angle ~60°. We envision that our approach can be implemented in various applications, including light detection and ranging (LiDAR).

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13:30 - 13:45
Manuscript ID.  0420
Paper No.  2022-SAT-S0104-O003
You-Song Huang NIR Energy Harvesting Metalens for CMOS Sensor
You-Song Huang, Chih-Ming Wang, Yen-Chun Chen, National Central University (Taiwan); Kai-Hao Chang, VisEra (Taiwan)

Because metasurface is smaller than traditional optical components, many practical applications have begun to appear. Image sensors are an example. Since the lens CMOS sensor cannot distinguish colors, a color filter must be added to distinguish the received colors. However, the efficiency also decreased, so metalens with energy harvesting began to attract attention. This paper introduces metalens with energy harvesting. Through good energy sorting performance, more NIR energy can be collected without affecting the RGB band. If applied to The monitoring system will provide a non-negligible change to the recognition ability at night.

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13:45 - 14:00
Manuscript ID.  0529
Paper No.  2022-SAT-S0104-O004
Wen-Cheng Hsu Compact structured light generation based on meta-hologram PCSEL integration
Wen-Cheng Hsu, NYCU (Taiwan), Hon Hai Research Institute (Taiwan)

Metasurfaces, a catalog of optical component, have numerous novel functions on demand. This kind of optical component integrated with vertical cavity surface emitting laser (VCSEL) has been reported. However, the performance is limited by VCSEL features and metasurface designed, such as low output power, large divergence angle. Here, we experimentally demonstrate a holographic image generation from a compact integration of photonics crystal surface emitting laser (PCSEL) and metasurface hologram. This research shows high output power (mW level), free from collection-lens and well image uniformity with wide field of view (FOV), these features are suitable for 3D imaging and 3D sensing.

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14:00 - 14:15
Manuscript ID.  0103
Paper No.  2022-SAT-S0104-O005
Fitri Oktafiani Selective Near-Field or Far-Field Optical Manipulation by Plasmonic Vortex Lens (PVL) 4-Arms with Circular Groove (CG)
Fitri Oktafiani, Po-Tsung Lee, National Yang Ming Chiao Tung University (Taiwan)

We propose plasmonic vortex lens (PVL) 4-arms with circular groove (CG) design to manipulate microparticle in the near field or far field depending on the handedness of circular polarization. The optical properties and trapping performances of the structure are simulated and analyzed. A Polystyrene (PS) bead of 1 diameter can be trapped in the near-field region (0.47λ) under left-handed circular polarization (LCP) illumination with minimum required power of 0.4 mW. Under right-handed circular polarization (RCP) illumination, the particle will be rotated in the far-field region (0.94λ) with minimum required power of 14.9 mW.

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14:15 - 14:30
Manuscript ID.  0736
Paper No.  2022-SAT-S0104-O006
chi lun liu Multiple bands of nanostructured color filters with high spectral resolution
chi lun liu, Tsung Sheng Kao, Chieh Kuang Chung, National Yang Ming Chiao Tung University (Taiwan)

In this paper, we propose an integrated configuration of subwavelength apertures for simultaneous color filtering in a spectral range from the visible to the near-infrared range. The incident light wave coupled with the hybrid nanostructures may result in the surface plasmons propagation through the integrated configuration as a flat lens, generating transmissive and reflective beams with suppressed cross-talk and high spectral resolution. We analyzed the transmission characteristics of the nanostructure color filters by using the finite-different time-domain algorithm. Furthermore, the polarization states and beam propagation direction may be altered with the asymmetric nanostructures in prospective applications.

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14:30 - 14:45
Manuscript ID.  0313
Paper No.  2022-SAT-S0104-O007
Jhih-Hao Huang Dielectric Directional Janus Metasurface for Asymmetric Vortex Beam Generation
Jhih-Hao Huang, Yao-Wei Huang, National Yang Ming Chiao Tung University (Taiwan)

Janus metasurfaces provide more functionalities to harness the light with different incident direction as degree of freedom. And directional Janus metasurfaces have been demonstrated at the microwave and near infrared region previously. However, such Janus metasurfaces are designed with multi-layers which cause complex fabrication process. Besides, Janus metasurfaces operating in the optical frequencies play more important role. In this study, we present a design of TiO2 monolayer Janus metasurface which generate different states of orbital angular momentum (OAM) in the visible. Direction-tunable arbitrary vortex beam expands the scope of polarization optics, enables compact and versatile total angular momentum operations.

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14:45 - 15:00
Manuscript ID.  0320
Paper No.  2022-SAT-S0104-O008
Lu-Yun Wang Resonant Waveguide Meta-gratings Design By Using Topology Optimization
Lu-Yun Wang, Yao-Wei Huang, National Yang Ming Chiao Tung University (Taiwan)

The resonant waveguide gratings (RWGs) with in and out couplers have been demonstrated to perform selective color-filtering and beam steering. However, RWGs with forward design suffers lower efficiency that limit the applications. Here, we design a metasurface which composed of titanium dioxide RWGs on the glass substrate working at red, green, and blue wavelengths, simultaneously. And we improve the diffraction efficiency by using adjoint-based topology optimization. The diffraction efficiency of simulation is up to 75% with the Q-factor reaching 320. Such a beam steering device opens a new paradigm for applications, including see-through optical combiners and augmented reality platforms.

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