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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (5): 809-818.DOI: 10.16553/j.cnki.issn1000-985x.2024.0303

• 研究论文 • 上一篇    下一篇

对称氧化限制结构提高795 nm VCSEL单模功率

贾秀阳1(), 贾志刚1,2(), 董海亮1,2, 陈小东1, 高茂林1, 许并社1,2,3   

  1. 1.太原理工大学新材料界面科学与工程教育部重点实验室,太原  030024
    2.山西浙大新材料与化工研究院,太原  030024
    3.陕西科技大学材料原子·分子科学研究所,西安  710021
  • 收稿日期:2024-11-29 出版日期:2025-05-15 发布日期:2025-05-28
  • 通信作者: 贾志刚,博士,讲师。E-mail:jiazhigang@tyut.edu.cn
  • 作者简介:贾秀阳(1999—),男,山东省人,硕士研究生。E-mail:13583813362@163.com
  • 基金资助:
    国家自然科学基金(21972103);国家自然科学基金(61904120);山西浙大新材料与化工研究院研发项目(2022SX-TD018);山西浙大新材料与化工研究院研发项目(2022SX-AT001);山西浙大新材料与化工研究院研发项目(2021SX-AT001);山西浙大新材料与化工研究院研发项目(2021SX-AT002);山西浙大新材料与化工研究院研发项目(2021SX-AT003);陕西省自然科学基金(2023-JC-QN-0552)

Symmetric Oxide Confinement Structure Improves 795 nm VCSEL Single-Mode Power

JIA Xiuyang1(), JIA Zhigang1,2(), DONG Hailiang1,2, CHEN Xiaodong1, GAO Maolin1, XU Bingshe1,2,3   

  1. 1. Key Laboratory of Interface Science and Engineering in Advanced Materials,Taiyuan University of Technology,Taiyuan 030024,China
    2. Shanxi -Zheda Institute of Advanced Materials and Chemical Engineering,Taiyuan 030024,China
    3. Institute of Atomic and Molecular Science,Shaanxi University of Science and Technology,Xi’an 710021,China
  • Received:2024-11-29 Online:2025-05-15 Published:2025-05-28

摘要: 795 nm垂直腔面发射激光器(VCSEL)作为铷原子钟和量子陀螺仪的激光光源,一般采用单氧化限制结构保证单模输出,但这种结构输出功率较小且功耗较高。本文利用PICS3D软件首先对不同位置单氧化限制层进行模拟分析,结果表明,氧化限制层越靠近有源区,其对载流子的限制能力越强,因此在相同的注入电流条件下器件的输出功率越高。在此基础上设计了靠近有源区对称双氧化限制和四氧化限制结构VCSEL,与传统单氧化限制结构相比,多氧化限制结构VCSEL有源区有较高的电流密度,且输出功率与电光转化效率有较大提高。此外,本文还通过远场、近场分析了氧化限制层数量对器件光学性能影响,发现随着氧化限制层数量的增加,VCSEL高阶模式更多集中在出光孔处且远场发散角增大。本研究对于通过多氧化限制层优化VCSEL性能,平衡输出功率和光学性能具有参考意义。

关键词: 垂直腔面发射激光器; 对称氧化限制结构; 电流密度; 载流子浓度; 单模; 光场分布

Abstract: The 795 nm vertical-cavity surface-emitting laser (VCSEL), commonly used as a laser source in rubidium atomic clocks and quantum gyroscopes, is generally designed with a single oxide confinement layer structure to ensure single-mode output. However, the output power in this structure is limited, and power consumption remains high. In this paper, PICS3D was used to simulate the position of single oxide confinement layer. The results demonstrate that as the oxide confinement layer is positioned closer to the active region, its ability to confine carriers increases. Consequently, under identical injection current conditions, devices exhibit higher output power. On this basis, symmetric double oxide confinement and quadruple oxide confinement structure VCSEL close to the active region are designed. Compared with traditional single oxide confinement VCSEL, multi oxide confinement VCSEL exhibits higher current density in the active region, the output power and power conversion efficiency are significantly improved. In addition, this paper also analyzes the effect of the number of oxide confinement layers on the optical performance of the device through the far-field and near-field, and finds that with the increase of the number of oxide confinement layers, the higher-order modes of the VCSEL are more concentrated in the exit aperture and the far-field divergence angle increases. This study is of great significance for optimizing the VCSEL performance using multiple oxide confinement and balancing the output power and optical performance.

Key words: vertical-cavity surface-emitting laser; symmetric oxide confinement structure; current density; carrier concentration; single-mode; optical field distribution

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