AlInAsSb盖格模式的SWIR和eSWIRSPAD具有高的雪崩概率
Optics express
|February 1, 2024
概括
研究人员开发了新的单光子雪崩二极管 (SPAD) 用于短波红外成像. 这些设备展示了高的单光子雪崩概率和检测效率在1.55微米和2微米.
科学领域:
- 光电学是指光电子产品.
- 半导体物理 半导体物理
背景情况:
- 单光子雪崩二极管 (SPAD) 对于SWIR/eSWIR应用,如通信和成像,至关重要.
- AlxIn1-yAysSb1-y雪崩光二极管 (APD) 提供可调节的带隙和高收益,适合这些光谱.
研究的目的:
- 报告新型SACM盖格尔模式SPAD的单光子计数性能.
- 评估SPAD在SWIR和eSWIR地区的效率.
主要方法:
- 制造一个单独的吸收,充电和乘法 (SACM) SPAD.
- 在封闭式灭电路内运行SPAD.
- 在冷温度下测量单光子雪崩概率和检测效率.
主要成果:
- 在80K时,SACM SPAD实现了超过80%的单光子雪崩概率.
- 单光子检测效率在1.55μm时为33%,在2μm时为12%.
结论:
- 开发的AlxIn1-yAysSb1-y SPAD显示了SWIR/eSWIR单光子检测的有希望的性能.
- 这项技术适用于光通信,距离和低光成像方面的先进应用.
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