National Physical Laboratory, Teddington, Middlesex, UK.
Opt Lett. 2011 Sep 15;36(18):3572-4. doi: 10.1364/OL.36.003572.
We describe a rigidly mounted optical cavity that is insensitive to inertial forces acting in any direction and to the compressive force used to constrain it. The design is based on a cubic geometry with four supports placed symmetrically about the optical axis in a tetrahedral configuration. To measure the inertial force sensitivity, a laser is locked to the cavity while it is inverted about three orthogonal axes. The maximum acceleration sensitivity is 2.5×10⁻¹¹/g (where g=9.81 ms⁻²), the lowest passive sensitivity to be reported for an optical cavity.
我们描述了一种刚性安装的光学腔，它对任何方向上的惯性力以及用于约束它的压缩力都不敏感。该设计基于立方几何形状，四个支撑物以四面体的形式对称地放置在光轴周围。为了测量惯性力灵敏度，当腔倒置时，激光被锁定在腔上，同时绕三个正交轴进行。最大加速度灵敏度为 2.5×10⁻¹¹/g（其中 g=9.81 ms⁻²），这是报道的光学腔的最低被动灵敏度。
