| Item type |
文献 / Documents(1) |
| 公開日 |
2025-03-14 |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
|
|
関連識別子 |
https://doi.org/10.3390/coatings13060972 |
|
|
関連名称 |
10.3390/coatings13060972 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Improvement of Optical Confinement for Terahertz Vertical-Cavity Surface-Emitting Laser with Square-Lattice Photonic Crystal Structure |
| 著者 |
Wang, Yadi
原口, 雅宣
Zhang, Xingbo
Wang, Pingping
Sun, Shufeng
|
| 抄録 |
|
|
内容記述 |
A new method proposed to enhance the optical confinement of the terahertz band in a vertical cavity surface emitting laser involves introducing a square-lattice photonic crystal structure. This structure’s filling factor was optimized by computing the energy band structure and optical band values of the photonic crystal. The optimal optical band value is 0.436–0.528 a/λ. At a specific carrier concentration, the real part of dielectric constant of GaAs/AlGaAs materials will gradually increase with the increase of Al elements. By adjusting the length of the resonant cavity, a vertical cavity surface emitting laser with two wavelengths can be created without utilizing current injection. Additionally, the photonic crystal structure’s control effect on the transverse mode of the vertical cavity surface emitting laser and the release effect of the PN junction light confinement were analyzed. Numerical calculations indicated that incorporating a cubic photonic crystal structure in the vertical cavity surface emitting laser resulted in a 2× increase in the difference frequency intensity and a 6.33× increase in the optical field intensity. |
| キーワード |
|
|
主題 |
vertical cavity surface emitting laser |
| キーワード |
|
|
主題 |
square-lattice photonic crystal structure |
| キーワード |
|
|
主題 |
dielectric constant |
| キーワード |
|
|
主題 |
terahertz wave |
| キーワード |
|
|
主題 |
optical field intensity |
| 書誌情報 |
en : Coatings
巻 13,
号 6,
p. 972,
発行日 2023-05-23
|
| 収録物ID |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
20796412 |
| 出版者 |
|
|
出版者 |
MDPI |
| 権利情報 |
|
|
権利情報 |
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
| EID |
|
|
識別子 |
411208 |
| 言語 |
|
|
言語 |
eng |
coatings_13_6_972.pdf (5.6 MB)
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