倒置导体的阻抗匹配：具有发散增益的二维分束器
Impedance matching of inverted conductors: Two-dimensional beam splitters with divergent gain
摘要：
一个薄的导电片-石墨烯，例如-传输，吸收和反射辐射。一个非常薄的薄片，即使薄到几乎消失，如果它的电导率相当于自由空间阻抗的一半，那么它在垂直入射时仍然可以产生50%的吸收。我们发现，无论薄层电导率，存在的极化和入射角的组合，实现这种阻抗半匹配的条件。如果导电介质可以倒置，则导电性在形式上是负的，并且薄片放大入射辐射。在薄片中可以保持负半匹配的程度上，在透射和反射中的巨大的单程增益是可能的。已知的半导体（例如，氮化镓）具有在薄且非共振的结构中提供大放大所必需的光学性质。
英文摘要：
A thin conducting sheet - graphene, for example - transmits, absorbs, and reflects radiation. A sheet that is very thin, even vanishingly so, can still produce 50% absorption at normal incidence if it has conductivity corresponding to half the impedance of free space. We find that, regardless of the sheet conductivity, there exists a combination of polarization and angle of incidence that achieves this impedance half-matching condition. If the conducting medium can be inverted, the conductivity is formally negative and the sheet amplifies the incident radiation. To the extent that a negative half-match in a thin sheet can be maintained, enormous single-pass gain in both transmission and reflection is possible. Known semiconductors (e.g., gallium nitride) have the optical properties necessary to give large amplification in a structure that is, remarkably, both thin and nonresonant.
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。
