用于巨光学相位非线性的机械柔性膜反射器设计
Design of Mechanically Compliant Membrane Reflectors for Giant Optical Phase Nonlinearity
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中文总结 AI 辅助
本文设计机械柔性膜反射器，利用辐射压力实现巨光学相位非线性，预测相位响应度达263 rad/W，并引入强度-范围-孔径度量，为未来机械-光学相位元件提供设计优先级。
中文摘要 AI 辅助
光学非线性产生于光子系统的响应依赖于光强度之时。辐射压力可以通过移动机械柔性反射器来产生这种非线性，从而改变反射光的相位。基于实测特性，我们预测硅氮化物膜蹦床（带有蛇形弹簧）具有263 rad W$^{-1}$的巨相位响应度和器件等效$n_{2,\mathrm{eff}} = 5.4 \times 10^{-7}$ m$^2$ W$^{-1}$。我们引入了用于反射相位元件的强度-范围-孔径度量。在常见直接反射协议下比较的已报道机械谐振器中，该蹦床是一个异常值，结合了高柔性、实际光学可访问性以及通过完整$2\pi$反射相位位移时99.85%的小信号相位响应度保持。实际实现需要光学和热协同设计。我们的框架为未来机械-光学相位元件指明了设计优先级。
英文摘要
Optical nonlinearities arise when the response of a photonic system depends on light intensity. Radiation pressure can create such a nonlinearity by moving a mechanically compliant reflector, thereby shifting the phase of the reflected light. Based on measured properties, we predict a giant phase responsivity of 263 rad W$^{-1}$ and a device-equivalent $n_{2,\mathrm{eff}} = 5.4 \times 10^{-7}$ m$^2$ W$^{-1}$ for a silicon nitride membrane trampoline with serpentine springs. We introduce strength-range-aperture metrics for reflective phase elements. Among reported mechanical resonators compared under a common direct-reflection protocol, this trampoline is an outlier, combining high compliance, practical optical accessibility, and 99.85% retention of its small-signal phase responsivity through a full $2π$ reflected-phase shift. Practical implementation requires optical and thermal co-design. Our framework indicates design priorities for future mechano-optical phase elements.
发表机构
- Tel Aviv University（特拉维夫大学）
- California Institute of Technology（加州理工学院）
机构由 AI 辅助整理，请以论文原文为准。
