Simulation of force-insensitive optical cavities in cubic spacers
Simulation of force-insensitive optical cavities in cubic spacers
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DOI：
10.1007/s00340-018-7000-3
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发表时间：
2018-06
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影响因子：
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通讯作者：
E. Wiens;S. Schiller
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文献类型：
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作者：
E. Wiens;S. Schiller
我们根据Webster和Gill （Opt Lett 36:35 572, 2011）的设计，分析了包含在具有近似八面体对称且由不同材料制成的间隔器中的光学腔的特性。我们表明，对于杨氏模量小于200 GPa的各向同性材料，泊松比必须位于“神奇”范围内，以消除支撑间隔的力的影响。这种限制可以通过使用硅等各向异性材料来克服。详细地研究了硅晶体在谐振腔体上的所有合适的取向，并讨论了沿这些取向与泊松比和杨氏模量的关系。我们还分析了空腔性能对隔离器制造误差的敏感性。我们发现沿谐振器三个光轴之一的[110]或[100]晶体学方向的取向为不精确制造提供了低灵敏度，并为基础物理实验提供了有趣的选择。
We analyze the properties of optical cavities contained in spacers with approximate octahedral symmetry and made of different materials, following the design of Webster and Gill (Opt Lett 36:3572, 2011). We show that, for isotropic materials with Young’s modulus less than 200 GPa, the Poisson’s ratiomust lie in a “magic” rangeto null the influence of the forces supporting the spacer. This restriction can be overcome with the use of anisotropic materials such as silicon. A detailed study aiming at identification of all suitable crystal orientations of silicon with respect to the resonator body is performed, and the relation to the Poisson’s ratio and the Young’s modulus along these orientations is discussed. We also perform an analysis of the sensitivity of the cavity performance to errors in spacer manufacturing. We find that the orientation of the [110] or [100] crystallographic directions oriented along one of the three optical axes of the resonator provides low sensitivities to imprecise manufacturing and interesting options for fundamental physics experiments.