利用磁化法布里-珀罗腔旋进光进行ALP搜索
ALP Search Using Precessing Light in a Magnetized Fabry Perot Cavity
摘要：
在本文中，我们概述了一个实验，以检测转换的光子到轴子类粒子（ALP）在一个强磁场。我们表明，通过调制通过法布里-珀罗腔的光的偏振，使其有效地在调制频率进动，产生的信号是成比例的平方，而不是ALP-光子耦合常数的四次方。假设散粒噪声是噪声的主要来源，我们估计，这种方法是敏感的ALP质量小于$10^{-4} eV$和耦合的顺序，以$g_{aγ}\sim 1.6\times 10^{-11} \text{GeV}^{-1}$与10米，10 T的磁铁，和$g_{aγ}\sim 1.6\times 10^{-12} \text{GeV}^{-1}$与100米的磁铁设想的ALPs-IIc。具有这些特性的ALP被用来解释BLAZARs发射的超高能伽马射线对河外背景光（EBL）的明显透明性。
英文摘要：
In this paper we outline an experiment to detect the conversion of photons to axion-like particles (ALPs) in a strong magnetic field. We show that by modulating the polarization of the light passing through a Fabry-Perot cavity so that it effectively precesses at the modulation frequency, a signal is produced that is proportional to the square as opposed to the fourth power of the ALP-photon coupling constant. Assuming shot noise to be the dominant source of noise, we estimate that this approach is sensitive ALP masses less than $10^{-4} eV$ and couplings on the order to $g_{aγ}\sim 1.6\times 10^{-11} \text{GeV}^{-1}$ with a 10m, 10 T magnet, and $g_{aγ}\sim 1.6\times 10^{-12} \text{GeV}^{-1}$ with a 100 m magnet as envisaged by ALPs-IIc. ALPs with these properties have been invoked to explain the apparent transparency of the extragalactic background light (EBL) to ultra high-energy gamma rays emitted by BLAZARs.
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