HOME > プロフィール > アフシャン ベガム アフシャン ベガム
- Address
- 305-0044 茨城県つくば市並木1-1 [アクセス]
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
出版物原則として、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, 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
- Siti Chalimah, Yuanzhao Yao, Naoki Ikeda, Afshan Begum, Kei Kaneko, Rei Hashimoto, Tsutomu Kakuno, Shinji Saito, Takashi Kuroda, Yoshimasa Sugimoto, Kazuaki Sakoda. Mid-infrared angle-resolved spectral characteristics of photonic crystal slabs for application in surface-emitting quantum cascade lasers. Journal of Nonlinear Optical Physics & Materials. 31 [04] (2022) 10.1142/s0218863522500175
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)