Transparent photonic band in metallodielectric nanostructures

Tailoring Metallodielectric Structures for Super Resolution and Superguiding Applications in the Visible and Near IR Ranges

We discuss propagation effects in realistic, transparent, metallo-dielectric photonic band gap structures in the context of negative refraction and super-resolution in the visible and near infrared ranges. In the resonance tunneling regime, we find that for transverse-magnetic incident polarization, field localization effects contribute to a waveguiding phenomenon that makes it possible for the light to remain confined within a small fraction of a wavelength, without any transverse boundaries, due to the suppression of diffraction. This effect is related to negative refraction of the Poynting …

等离子体半导体纳米结构中光学非线性的起源

Origin of optical nonlinearity in plasmonic semiconductor nanostructures

本文通过实验和流体动力学建模证明重掺杂半导体中的自由电子非线性效率可比传统电介质高几个数量级，并可通过调节掺杂水平控制非线性效率及其光谱位置，为全半导体光子集成电路中的等离子体非线性应用奠定基础。

Biomimetic Omnidirectional Anti-reflective Glass via Direct Ultrafast Laser Nanostructuring

We report on a single-step, biomimetic approach for the realization of omnidirectional transparent antireflective glass. In particular, it is shown that circularly polarized ultrashort laser pulses produce self-organized nanopillar structures on fused silica (SiO2). The laser induced nanostructures are selectively textured on the glass surface in order to mimic the spatial randomness, pillar-like morphology, as well as the remarkable anti-reflection properties found on the wings of the glasswing butterfly, Greta oto[1] and various Cicada species[2]. The artificial structures exhibit impressive…