Session Index

Nanophotonic Materials and Devices

Nanophotonic Materials and Devices III
Friday, Dec. 3, 2021  10:45-12:00
Presider: Prof. Yu-Hsun Chou(NCKU) Prof. Tong-Wun Wang(FCU)
Room: 302a
10:45 - 11:00
Manuscript ID.  0173
Paper No.  2021-FRI-S0103-O001
Jyun-Jhang He Active Control of Photonic Crystals
Jyun-Jhang He;Shawn-Yu Lin;Jhih-Sheng Wu

In this paper, we study active control of photonic crystals. And we consider photonic crystals of finite thicknesses which is made of infinitely long and periodical dielectric cylinders. Such systems host waveguide modes whose photonic band structures are determined by dielectric geometries. And the optical properties reflect their photonic band structures. Therefore, we investigate how gain and loss affect reflection and transmission. Then we find that, after adding the lossy material, the optical properties of the photonic crystals have the lower peaks on transmission and the crossing of transmission and reflection have a red shift.

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11:00 - 11:15
Manuscript ID.  0263
Paper No.  2021-FRI-S0103-O002
Yen-Shou Lin Manipulation of Optical Properties by Integrating Two-Dimensional Tungsten Diselenide (WSe2) with One-Dimensional Photonic Crystals
Yen-Shou Lin;Hao-Hsuan Ciou;Ya-Hui Chang;Konthoujam James Singh;Hsiang-Ting Lin;Hao-Chung Kuo;Min-Hsiung Shih

In this study, we integrated monolayer tungsten diselenide (WSe2) on a flexible substrate with the one-dimensional (1-D) silicon nitride (SiNx) photonic crystal (PhC) structure, and analyze optical characteristics of the device.

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11:15 - 11:30
Manuscript ID.  0438
Paper No.  2021-FRI-S0103-O003
Yan-Song Zhang Flexible Liquid Crystal Composite Laser with Light Controllability of Emission Direction
Yan-Song Zhang;Zhi-Wei Lin;Chia-Rong Lee

Here, a self-steering lasing emission from a defect-mode sandwich-like resonator consisting of photomechanical deformable azobenzene cholesteric liquid crystal elastomer is demonstrated. The output lasing emission can be fast steered by UV irradiation within a wide angular tuning range of approximately ± 57°.

11:30 - 11:45
Manuscript ID.  0608
Paper No.  2021-FRI-S0103-O004
Tsung Sheng Kao Monte Carlo simulation of incoherent random lasing in the dye solution with dielectric scatterers
Jian Xuan Liu;Tsung Sheng Kao

In this paper, we investigate the spectral characteristics of random lasing behaviors via the Monte Carlo simulation in a system of dye solution with dielectric scatterers. The calculation model not only shows the correspondence to the experimental measurements, but also suggests that lasing threshold is highly dependent with the pumping spot size and scattering mean-free path in disordered medium. Furthermore, we simulate the effect of single-particle Mie resonance on emission spectrum, discussing the wavelength tunability of random laser.

11:45 - 12:00
Manuscript ID.  0713
Paper No.  2021-FRI-S0103-O005
Ming Lun Tseng Versatile Wafer-Scale Nanofabrication of Functional Metasurfaces
Ming Lun Tseng;Aleksandrs Leitis;Aurelian John-Herpin;Yuri S. Kivshar;Hatice Altug

We demonstrate an industry-compatible method to fabricate wafer-scale metasurfaces on freestanding membranes. The method is based on deep-UV lithography and capable of producing both of plasmonic and dielectric metasurfaces for various functionalities. The reported metasurfaces show ideal operation efficiencies for high-quality-factor resonances, light focusing and polarization control, and biosensing.

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