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2020 年度 実績報告書

Searching new operation area for QCL by Gain Mapping using NEGF

研究課題

研究課題/領域番号 18K04251
研究機関国立研究開発法人理化学研究所

研究代表者

Yun Joosun  国立研究開発法人理化学研究所, 開拓研究本部, 基礎科学特別研究員 (30817359)

研究分担者 平山 秀樹  国立研究開発法人理化学研究所, 開拓研究本部, 主任研究員 (70270593)
研究期間 (年度) 2018-04-01 – 2021-03-31
キーワードQCL / NEGF
研究実績の概要

We had analytically estimated how large averaged-random electric field could be generated due to the interface roughness of GaN/AlGaN before. However, since the randomness of interface roughness will trigger the enormous randomly distributed electric field around quantum wells, modeling self-energy based on the averaged-random electric field will unfit to discover the origin of the difficulty of spontaneous emission.
Therefore, we start to develop 3D NEGF (non-equilibrium Green function) carrier transport simulator and polarization-induced interface roughness scattering’s self-energy to prove the impact of random electric field without objection.
Since the time required for the development of the above contents is predicted as quite long, we have parallelly investigated a new waveguide structure that may pull in the realization of the efficient GaN/AlGaN QCL in the near future. We are preparing a patent and a research paper to publish.

  • 研究成果

    (1件)

すべて 2021

すべて 雑誌論文 (1件) (うち国際共著 1件、 査読あり 1件)

  • [雑誌論文] Demonstration of High Light-Extraction Efficiency of Double-Metal Surface-Emitting Terahertz Quantum Cascade Laser with High Active Region Occupancy by Adopting Uniform Triangular Prism Photonic Crystal2021

    • 著者名/発表者名
      Joosun Yun, Tsung-Tse Lin, and Hideki Hirayama
    • 雑誌名

      Journal of Lightwave Technology

      巻: submitted ページ: JLT-28025-2021

    • 査読あり / 国際共著

URL: 

公開日: 2022-03-04  

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