论文标题
DC Magneto-Optical Kerr效应的测量，灵敏度为$ 10^{ - 7} \ text {rad}/\ sqrt {\ text {hz}} $
Measurement of DC Magneto-Optical Kerr Effect with Sensitivity of $10^{-7} \text{Rad}/\sqrt{\text{Hz}}$
论文作者
论文摘要
本字母中描述了高敏感的DC磁光kerr效应（moke）设备。通过对几个主导噪声源的详细分析，我们提出了明显降低摩克噪声的解决方案，并具有长期稳定性实现了$ 1.5 \ times10^{ - 7} \ text {rad}/\ sqrt {\ sqrt {\ sqrt {\ sqrt {\ sqrt {\ sqrt {\ sqrt {\ text {hz}} $。通过测量$ \ text {sio} _2 $，Ni厚度在0到3 nm上，测量楔形的Ni薄膜的敏感性是通过测量楔形的Ni薄膜的。展示了$ 1.5 \ times10^{ - 8} $ rad的噪声平台。还讨论了通过应用AC调制将敏感性进一步提高到$ 10^{ - 9} $ rad的可能性。
A high-sensitive DC Magneto-Optical Kerr Effect (MOKE) apparatus is described in this letter. Via detailed analysis on several dominating noise sources, we have proposed solutions that significantly lower the MOKE noise, and a sensitivity of $1.5\times10^{-7} \text{rad}/\sqrt{\text{Hz}}$ is achieved with long-term stability. The sensitivity of the apparatus is tested by measuring a wedge-shaped Ni thin film on $\text{SiO}_2$ with Ni thickness varying from 0 to 3 nm. A noise floor of $1.5\times10^{-8}$ rad is demonstrated. The possibility of further improving sensitivity to $10^{-9}$ rad via applying ac modulation is also discussed.
