吸收和双断率研究,以减少高度空隙度的钻石中的光学损失
Tingpeng Luo1, Felix A Hahl1, Julia Langer1
1Fraunhofer Institute for Applied Solid State Physics IAF, 79108 Freiburg, Germany.
概括
这项研究研究了用于量子应用的化钻石的光学吸收和双折射. 我们确定了与缺陷相关的原因和策略,以制造具有低光学损失的高质量钻石.
科学领域:
- 材料科学 材料科学 材料科学
- 量子技术 量子技术是一种量子技术.
- 光学是什么?光学是什么?光学是什么?
背景情况:
- 钻石颜色中心,特别是空 (NV) 中心,对于量子传感和计算至关重要.
- 在量子应用中提高灵敏度依赖于钻石中的低光学损失 (吸收和双折射).
研究的目的:
- 系统地研究700nm附近的光学吸收和钻石中的双折射.
- 了解和NV兴奋剂以及NV创建过程如何影响这些光学特性.
- 确定制造用于量子应用的高性能钻石的策略.
主要方法:
- 吸收光谱法用于分析光学特性.
- 该研究系统地改变了和NV兴奋剂水平.
- 通过钻石生长,电子束辐射和火处理来研究NV的产生.
主要成果:
- 光学吸收与增加的兴奋剂相关,但替代不是直接的吸收器.
- 随着胺兴奋剂的增加,双断率会减少.
- 确定了多个晶体缺陷度,并跟踪了它们在加工过程中的变化.
结论:
- 缺陷度被确定为吸收和双断裂的潜在原因.
- 提出了制造具有高NV密度和低光学损失的化学蒸气沉积 (CVD) 钻石的策略.
- 这项研究有助于开发先进的基于钻石的量子技术.
相关概念视频
01:26Imperfections in Crystal Structure: Stoichiometric Point Defects
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
01:29Imperfections in Crystal Structure: Non-Stoichiometric Defects
Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...