范德华反铁磁体中的腔增强线性二向色性
Cavity-Enhanced Linear Dichroism in a van der Waals Antiferromagnet
摘要：
光学双折射是广泛用于光子的过滤和分束的晶体的基本光学性质。双折射晶体同时具有线性二向色性（LD）的性质，其允许具有两种不同偏振的光的不对称传播或衰减。LD的这种性质已经从小分子到聚合物和晶体进行了广泛的研究，但很少被工程化。在这里，我们使用新发现的范德华反铁磁（AFM）绝缘体FePS 3的自旋-电荷耦合诱导大的面内光学各向异性，从而LD。我们报告说，在这个AFM绝缘体的LD是可调的光谱和幅度明智的腔耦合的函数。我们证明了近团结LD在可见光-近红外范围内的腔耦合FePS 3晶体，并推导出其色散作为腔长和FePS 3厚度的函数。我们的研究结果具有广泛的影响，使用腔调谐LD作为诊断探针强相关的量子材料，以及开辟了新的机会，小型化，片上分束器和可调谐滤波器。
英文摘要：
Optical birefringence is a fundamental optical property of crystals widely used for filtering and beam splitting of photons. Birefringent crystals concurrently possess the property of linear dichroism (LD) that allows asymmetric propagation or attenuation of light with two different polarizations. This property of LD has been widely studied from small molecules to polymers and crystals but has rarely been engineered per will. Here, we use the newly discovered spin-charge coupling in van der Waals antiferromagnetic (AFM) insulator FePS3 to induce large in-plane optical anisotropy and consequently LD. We report that the LD in this AFM insulator is tunable both spectrally and magnitude-wise as a function of cavity coupling. We demonstrate near-unity LD in the visible-near infrared range in cavity-coupled FePS3 crystals and derive its dispersion as a function of cavity length and FePS3 thickness. Our results hold wide implications for use of cavity tuned LD as a diagnostic probe for strongly correlated quantum materials as well as opens new opportunities for miniaturized, on-chip beam-splitters and tunable filters.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
