Beamed propulsion of a light sail based on radiation pressure benefits from a passively self-stabilizing “beam riding” diffractive film. We describe the optomechanics of a rigid non-spinning light sail that mitigates catastrophic sail walk-off and tumbling by use of a flat axicon diffraction grating. A linear stability analysis and numerical integration of the coupled translational and rotational equations of motion are examined. Stability is traded against longitudinal acceleration. The examined system achieves 90% of the theoretical longitudinal force limit and stability against a relative sail translation up to 30% of the sail radius when the payload is attached to a long boom.

中文翻译：

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稳定的轴锥衍射光帆的光力学。

基于辐射压力的轻帆束状推进装置得益于被动自稳定的“光束穿越”衍射膜。我们描述了一种刚性非自旋轻帆的光力学，它通过使用平坦的轴锥衍射光栅来减轻灾难性帆的走动和翻滚。研究了运动的平移和旋转耦合方程的线性稳定性分析和数值积分。稳定性要与纵向加速度相对应。当将有效载荷连接到长吊臂时，所检查的系统可达到理论纵向力极限的90％，并且相对于相对帆平移的稳定性最高可达帆半径的30％。