HOME > プロフィール > アフシャン ベガム アフシャン ベガム
.jpg)
研究内容
- Keywords
Semiconductor nanostructures, Optics, Photonic Dirac cones, Photonic Crystals, Optical Waveguides, Topological Photonics.
We achieved the first-ever observation of a double Dirac cone in the IR region!
Here is the cross-sectional SEM of the fabricated sample, with a unique design crucial to obtaining the Dirac cones.
Check out the observed double Dirac cones here:
https://journals.jps.jp/doi/full/10.7566/JPSJ.91.084401
出版物2004年以降のNIMS所属における研究成果や出版物を表示しています。
論文
- Afshan Begum, Yuanzhao Yao, Takashi Kuroda, Yoshihiko Takeda, Naoki Ikeda, Yoshimasa Sugimoto, Takaaki Mano, Kazuaki Sakoda. Topological band gaps and edge modes materialized by symmetric silicon-on-insulator photonic crystal slabs in the mid-IR range. Physical Review A. 107 [4] (2023) 043507 10.1103/physreva.107.043507
- Afshan Begum, Yuanzhao Yao, Takashi Kuroda, Yoshihiko Takeda, Naoki Ikeda, Yoshimasa Sugimoto, Takaaki Mano, Kazuaki Sakoda. Design and Observation of Topological Band Gaps and Edge Modes of SOI Photonic Crystal Slabs in the Mid-Infrared Range. Journal of the Physical Society of Japan. 92 [11] (2023) 11402 10.7566/jpsj.92.114402 Open Access
- Afshan Begum, Yuanzhao Yao, Takashi Kuroda, Eiichiro Watanabe, Naoki Ikeda, Yoshimasa Sugimoto, Yoshihiko Takeda, Kazuaki Sakoda. Observation of Two-dimensional Isotropic Double Dirac Cones in the Electromagnetic Dispersion Relation. Journal of the Physical Society of Japan. 91 [8] (2022) 10.7566/jpsj.91.084401
口頭発表
- AFSHAN BEGUM, Afshan Begum, YAO, Yuanzhao, KURODA, Takashi, WATANABE, Eiichiro, SUGIMOTO, Yoshimasa, TAKEDA, Yoshihiko, SAKODA, Kazuaki. Angle-resolved reflection spectra of double Dirac-cone materialized in SOI photonic crystal slabs by accidental degeneracy. 日本物理学会第７７回年次大会 https://jps.or.jp/activities/meetings/annual/annual-index.php. 2022
- AFSHAN BEGUM, Afshan Begum, YAO, Yuanzhao, KURODA, Takashi, WATANABE, Eiichiro, SUGIMOTO, Yoshimasa, TAKEDA, Yoshihiko, SAKODA, Kazuaki. Observation of photonic band dispersion with high angle-resolution reflection measurements. NIMS先端計測シンポジウム2022 https://www.nims.go.jp/research/materials-analysis/events/amcp_sympo2022.html. 2022
- シティ ハリマ シティ ハリマ, 姚 遠昭, 池田 直樹, アフシャン ベガム アフシャン ベガム, Kei Kaneko, Rei Hashimoto, Tsutomu Kakuno, Shinji Saito, 黒田 隆, 杉本 喜正, 迫田 和彰. Midinfrared angle-resolved reflection measurement of two-dimensional photonic crystal slabs for their application to surface emitting quantum cascade lasers. The 13th International Symposium on Modern Optics and Its Applications (ISMOA 2021) / https://ismoa.indonesianoptics.org . 2021
所属学会
Japan Physical Society, SPIE, OSA - The Optical Society, Institute of Electrical and Electronics Engineers, Optical Society of India, American Physical Society
受賞履歴
- NIMS Student Seminar Award, Doctoral course, year 2. Title, "Scheme to utilize Photonic Crystal Dirac Cone for waveguiding & lasing demonstration" (2020)
- NIMS Student Seminar Award, Doctoral course, year 1. Title, "Topological Waveguide for Entangled Photon Pair Dissociation" (2019)
この機能は所内限定です。
この機能は所内限定です。