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Akademický článek

Sample-efficient inverse design of freeform nanophotonic devices with physics-informed reinforcement learning

Autor: Park Chaejin, Kim Sanmun, Jung Anthony W., Park Juho, Seo Dongjin, Kim Yongha, Park Chanhyung, Park Chan Y., Jang Min Seok

Publikováno v: Nanophotonics, Vol 13, Iss 8, Pp 1483-1492 (2024)

Finding an optimal device structure in the vast combinatorial design space of freeform nanophotonic design has been an enormous challenge. In this study, we propose physics-informed reinforcement learning (PIRL) that combines the adjoint-based method

Externí odkaz: https://doaj.org/article/09906914e8804a9ab7a3e63e333e1b24

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Akademický článek

Observational evidence of thermospheric wind and composition changes and the resulting ionospheric disturbances in the European sector during extreme geomagnetic storms

Autor: Kim Jeongheon, Kwak Young-Sil, Lee Changsup, Lee Jaewook, Kam Hosik, Yang Tae-Yong, Jee Geonhwa, Kim YongHa

Publikováno v: Journal of Space Weather and Space Climate, Vol 13, p 24 (2023)

On November 1st and 2nd, 2021, four Halo coronal mass ejections were ejected from the Sun, releasing billions of tons of high-energy particles into interplanetary space. These were directed towards the Earth and reached our planet on November 3rd and

Externí odkaz: https://doaj.org/article/9293d2cdeb454931b46c9cba1978b55d

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Meent: Differentiable Electromagnetic Simulator for Machine Learning

Autor: Kim, Yongha, Jung, Anthony W., Kim, Sanmun, Octavian, Kevin, Heo, Doyoung, Park, Chaejin, Shin, Jeongmin, Nam, Sunghyun, Park, Chanhyung, Park, Juho, Han, Sangjun, Lee, Jinmyoung, Kim, Seolho, Jang, Min Seok, Park, Chan Y.

Electromagnetic (EM) simulation plays a crucial role in analyzing and designing devices with sub-wavelength scale structures such as solar cells, semiconductor devices, image sensors, future displays and integrated photonic devices. Specifically, opt

Externí odkaz: http://arxiv.org/abs/2406.12904

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Physics-informed reinforcement learning for sample-efficient optimization of freeform nanophotonic devices

Autor: Park, Chaejin, Kim, Sanmun, Jung, Anthony W., Park, Juho, Seo, Dongjin, Kim, Yongha, Park, Chanhyung, Park, Chan Y., Jang, Min Seok

In the field of optics, precise control of light with arbitrary spatial resolution has long been a sought-after goal. Freeform nanophotonic devices are critical building blocks for achieving this goal, as they provide access to a design potential tha

Externí odkaz: http://arxiv.org/abs/2306.04108

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Akademický článek

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