Session Index

Nanophotonic Materials and Devices

Nanophotonic Materials and Devices II
Thursday, Dec. 2, 2021  15:15-17:00
Presider: Prof. Hsu-Cheng Hsu (NCKU) Prof. Yen-Sheng Lin (I-Shou)
Room: 302a
15:15 - 15:30 Award Candidate (Paper Competition)
Manuscript ID.  0036
Paper No.  2021-THU-S0102-O001
Jun-Wei Liao Gate Voltage Modulated Plasmonic Nanolasers on the Graphene-insulator-metal Platform
Jun-Wei Liao

We experimentally demonstrate the voltage modulation of plasmonic nanolasers on graphene-insulator-metal (GIM) platform at room temperature. The threshold and peak position of lasing peak could be tuned by gate voltage. The diminishing of lasing intensity, and the wavelength shifts of peak positions were observed when the applied voltage was changed.

15:30 - 15:45 Award Candidate (Paper Competition)
Manuscript ID.  0189
Paper No.  2021-THU-S0102-O002
Luthviyah Choirotul Muhimmah The Observation of Two-Color Emission in Layered Dual-Phase Gallium Telluride
Luthviyah Choirotul Muhimmah;Ching-Hwa Ho

Dual-phase two-color emissions of multilayered GaTe positioned at 1.588 and 1.652 eV are simultaneously detected by micro-photoluminescence measurement at 300 K. The lower-energy peak may originate from the hexagonal GaTe (H-GaTe) phase while the higher-energy luminescence might come from monoclinic GaTe (M-GaTe) phase and which are verified by micro-thermoreflectance and HRTEM. TRPL and AFLM of the multilayer GaTe indicated that the averaged decay lifetime of the H-GaTe is larger than that of the M-GaTe. Polarized micro-Raman and polarized micro-PL measurements shows that M-GaTe has higher extinction ratio and lower symmetry than that H-GaTe.

15:45 - 16:00 Award Candidate (Paper Competition)
Manuscript ID.  0073
Paper No.  2021-THU-S0102-O003
Zhong-Wen Yang Metasurface-Integrated Photonic-Crystal Surface-Emitting Lasers with Variable Emission Angles
Zhong-Wen Yang

Metasurfaces have attracted great interest because of their ability to control the amplitude, phase, and polarization of electromagnetic waves. In this study, we first demonstrate emission angle covering ±20° × ±20° from a metasurface-integrated PCSELs array with a very compact size.

16:00 - 16:15 Award Candidate (Paper Competition)
Manuscript ID.  0431
Paper No.  2021-THU-S0102-O004
Chi-Tang Huang Electrically tunable phase gratings using uniform lying helix structures of cholesteric liquid crystals
Chi-Tang Huang;Yu-Tse Wang;Xiang-You Ji;Ko-Ting Cheng

In this study, the proposed phase gratings are fabricated by the uniform lying helix (ULH) textures of cholesteric liquid crystals (CLCs). With the characteristics of LCs, an electrically tunable phase grating is realizable under ULH textures. Besides, the effect of the LC dimer, CB7CB, to ULH textures is investigated.

16:15 - 16:30 Award Candidate (Paper Competition)
Manuscript ID.  0147
Paper No.  2021-THU-S0102-O005
Chao-Hsu Lin High-contrast Grating (HCG) Process Applied to Micro-LED and Polarization Simulation ratio Optimization
Chao-Hsu Lin;Yen-Shou Lin;Chun-You Fan;Hao-Chung Kuo;Tsung-Sheng Kao

In this study, we demonstrate the High-Contrast Grating(HCG) that fabricated on the semipolar substrate with aluminum deposition shown better polarization control ability and achieved degree of polarization(DOP) value to 0.75. Compare to the p-type gallium grating and nonstructural devices, the grating with aluminum deposition shows the best performance of measurement and simulation.

16:30 - 16:45 Award Candidate (Paper Competition)
Manuscript ID.  0601
Paper No.  2021-THU-S0102-O006
Wei-Xiang Hong Dual-wavelength guided mode resonance filter
Wei-Xiang Hong;Yung-Jr Hung

We demonstrate a dual-wavelength guided mode resonance (GMR) filter based a holographic-defined moiré waveguide grating structure. As-realized GMR filter exhibits two resonant wavelengths (561 and 632 nm) for TE-polarized light.

16:45 - 17:00 Award Candidate (Paper Competition)
Manuscript ID.  0186
Paper No.  2021-THU-S0102-O007
Jhuang-Hao Cyue Localized Phase Modulation in Vanadium Dioxide with Joule Heating Driven Memristive Switching
Jhuang-Hao Cyue;Kuo-Ping Chen

Vanadium dioxide (VO2) is one of promising Phase change materials (PCMs) presenting the insulator-metal transition (IMT) with strong contrast in physical properties, low critical temperature, ultra-fast transition and continuously tunable characteristic. In our work, we apply VO2 onto ITO glass as a memory layer so as to develop a novel approach to quantify the correlation between IMT behavior and the geometry-dependent Joule-heating effect. The demonstration of two-terminals memory device provides a new way for nanophotonics and advanced optoelectronics device. Notably, this approach also reveals the significance of thermal engineering for efficiently obtaining phase transition of VO2.

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