论文标题
使用多空间模式腔读数的镜像涂料降低热噪声
Mirror Coating Thermal Noise Mitigation Using Multi-Spatial Mode Cavity Readout
论文作者
论文摘要
我们提出了一种通过使用多种TEM空间模式读数和稳定激光频率来减轻光腔中涂层热噪声的方法。通过最佳的重量，我们合成了镜面的更广泛采样，改善了布朗热波动的平均。我们显示的热噪声改善因子为1.57，与名义型原型腔的台面束相当，并且使用0.1 m腔中的三种模式用于实用实验室实验：等同于冷却镜，比例为120 k的$ \ textrm {tem} _ {tem} _ {tem} _ {00} $。
We present an approach to mitigate coating thermal noise in optical cavities by using multiple TEM spatial modes to readout and stabilize laser frequency. With optimal weightings we synthesize a wider sampling of the mirror surface, improving averaging of Brownian thermal fluctuation. We show thermal noise improvement factors of 1.57, comparable to a MESA beam of a nominal 12 m prototype cavity, and a factor 1.61 improvement over the $\textrm{TEM}_{00}$ using three modes in a 0.1 m cavity for a practical laboratory experiment: equivalent to cooling mirrors to 120 K from room temperature.
