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Emerging low-cost,large-scale photonic platforms with soft lithography and self-assembly

Photonics Insights 2023年第2期2卷 3-31页

作者： Hyunjung Kang dohyeon lee Younghwan Yang Dong Kyo Oh Junhwa Seong Jaekyung Kim Nara Jeon Dohyun Kang Junsuk Rho Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics PohangRepublic of Korea

Advancements in micro/nanofabrication have enabled the realization of practical micro/nanoscale photonic devices such as absorbers,solar cells,metalenses,and *** the performance of these photonic devices has been improved by enhancing the design flexibility of structural materials through advanced fabrication methods,achieving large-area and high-throughput fabrication of tiny structural materials remains a *** this aspect,various technologies have been investigated for realizing the mass production of practical devices consisting of micro/nanostructural *** review describes the recent advancements in soft lithography,colloidal self-assembly,and block copolymer self-assembly,which are promising methods suitable for commercialization of photonic *** addition,we introduce low-cost and large-scale techniques realizing micro/nano devices with specific examples such as display technology and *** inferences presented in this review are expected to function as a guide for promising methods of accelerating the mass production of various sub-wavelength-scale photonic devices.

关键词： nanofabrication scalable manufacturing soft lithography colloidal self-assembly block copolymer self-assembly

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Widely tunable ultra-narrow-linewidth dissipative soliton generation at the telecom band

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Photonics Research 2020年第7期8卷 1100-1109页

作者： Chang Kyun Ha Ki Sang lee dohyeon Kwon Myeong Soo Kang Department of Physics Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141South Korea School of Mechanical and Aerospace Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141South Korea

Ultra-narrow-linewidth mode-locked lasers with wide wavelength tunability can be versatile light sources for a variety of newly emergent ***,it is very challenging to achieve the stable mode locking of substantially long,anomalously dispersive fiber laser cavities employing a narrowband spectral filter at the telecom ***,we show that a nearly dispersion-insensitive dissipative mode-locking regime can be accessed through a subtle counterbalance among significantly narrowband spectral filtering,sufficiently deep saturable absorption,and moderately strong in-fiber Kerr *** achieves ultra-narrow-linewidth(a few gigahertz)nearly transform-limited self-starting stable dissipative soliton generation at low repetition rates(a few megahertz)without cavity dispersion management over a broad tuning range of wavelengths covering the entire telecom *** unique laser may have immediate application as an idealized pump source for high-efficiency nonlinear frequency conversion and nonclassical light generation in dispersion-engineered tightly light-confining microphotonic/nanophotonic systems.

关键词： tunable narrow soliton

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