Issue 5 (2019)

Non-Markovian features in semiconductor quantum optics: quantifying the role of phonons in experiment and theory

Non-Markovian features in semiconductor quantum optics: quantifying the role of phonons in experiment and theory

We discuss phonon-induced non-Markovian and Markovian features in QD-based quantum nanooptics. We cover lineshapes in linear absorption experiments, phonon-induced incoherence in the Heitler regime, and memory correlations in two-photon coherences. …

Gradient index phononic crystals and metamaterials

Gradient index phononic crystals and metamaterials

Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refractive index is obtained from the homogenization of the infinite …

Information metamaterials – from effective media to real-time information processing systems

Information metamaterials – from effective media to real-time information processing systems

Metamaterials have been characterized by effective medium parameters over the past decades due to the subwavelength nature of meta-atoms. Once the metamaterials are fabricated, their functions become fixed or tunable. Recently, the concept of …

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating photonics with resonant dielectric nanostructures

Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical …

Single-photon sources with quantum dots in III–V nanowires

Single-photon sources with quantum dots in III–V nanowires

Single-photon sources are one of the key components in quantum photonics applications. These sources ideally emit a single photon at a time, are highly efficient, and could be integrated in photonic circuits for complex quantum system designs. …

Plasmon-enhanced solar vapor generation

Plasmon-enhanced solar vapor generation

Plasmonic nanostructures with strong light-matter interactions have been intensively explored in the past decades. The plasmonic photothermal effect has garnered significant research interest and triggered plenty of applications, such as …

Polymorph-induced photosensitivity change in titanylphthalocyanine revealed by the charge transfer integral

Polymorph-induced photosensitivity change in titanylphthalocyanine revealed by the charge transfer integral

The crystal form of semiconductor materials is keenly correlated with the photosensitivity of optoelectronic devices. Thus, understanding the crystal form-dependent photosensitivity mechanism is critical. In this work, the microemulsion phase …

Topological plasmonic edge states in a planar array of metallic nanoparticles

Topological plasmonic edge states in a planar array of metallic nanoparticles

Photonic topological insulators (PTIs) are electromagnetic structures with highly robust unidirectional edge states, originating from their nontrivial bulk band topology. Here, we propose a plasmonic PTI that supports highly confined one-way edge …

Laser-written colours on silver: optical effect of alumina coating

Laser-written colours on silver: optical effect of alumina coating

In this paper we discuss the optical response of laser-written plasmonic colours on silver coated via the atomic layer deposition of alumina. These colours are due to nanoparticles distributed on a flat surface and on a surface with periodic …

Bismuth-based metamaterials: from narrowband reflective color filter to extremely broadband near perfect absorber

Bismuth-based metamaterials: from narrowband reflective color filter to extremely broadband near perfect absorber

In recent years, sub-wavelength metamaterials-based light perfect absorbers have been the subject of many studies. The most frequently utilized absorber configuration is based on nanostructured plasmonic metals. However, two main drawbacks were …

Vortex index identification and unidirectional propagation in Kagome photonic crystals

Vortex index identification and unidirectional propagation in Kagome photonic crystals

Vortex field in photonic metamaterials has been revealed in recent years, which provides an extra degree of freedom to control the behavior of electromagnetic waves, such as the unidirectional propagation in topological metamaterials and orbital …

A compact structure for realizing Lorentzian, Fano, and electromagnetically induced transparency resonance lineshapes in a microring resonator

A compact structure for realizing Lorentzian, Fano, and electromagnetically induced transparency resonance lineshapes in a microring resonator

Microring resonators, as a fundamental building block of photonic integrated circuits, are well developed into numerous functional devices, whose performances are strongly determined by microring’s resonance lineshapes. We propose a compact …

Low- and high-order nonlinear optical properties of Ag2S quantum dot thin films

Low- and high-order nonlinear optical properties of Ag2S quantum dot thin films

Thin films containing small-sized quantum dots (QDs) and nanoparticles have shown strong optical nonlinearities caused by the confinement effect. Here, we report the study of third-order optical nonlinearities of silver sulfide (Ag2S) QD thin films …

Monolithic waveguide laser mode-locked by embedded Ag nanoparticles operating at 1 ?m

Monolithic waveguide laser mode-locked by embedded Ag nanoparticles operating at 1 ?m

Monolithic waveguide laser devices are required to achieve on-chip lasing. In this work, a new design of a monolithic device with embedded Ag nanoparticles (NPs) plus the Nd:YAG ridge waveguide has been proposed and implemented. By using Ag+ ion …

Fabrication of highly homogeneous and controllable nanogratings on silicon via chemical etching-assisted femtosecond laser modification

Fabrication of highly homogeneous and controllable nanogratings on silicon via chemical etching-assisted femtosecond laser modification

Femtosecond laser direct writing is widely exploited in surface periodic structures processing. However, this technique still faces challenges in obtaining high surface homogeneity and flexible morphology controllability. In this study, a flexible …

Quantitative analysis and modeling of line edge roughness in near-field lithography: toward high pattern quality in nanofabrication

Quantitative analysis and modeling of line edge roughness in near-field lithography: toward high pattern quality in nanofabrication

Quantitative analysis of line edge roughness (LER) is very important for understanding the root causes of LER and thereby improving the pattern quality in near-field lithography (NFL), because LER has become the main limiter of critical dimension …

WDM-compatible multimode optical switching system-on-chip

WDM-compatible multimode optical switching system-on-chip

The development of optical interconnect techniques greatly expands the communication bandwidth and decreases the power consumption at the same time. It provides a prospective solution for both intra-chip and inter-chip links. Herein reported is an …

Solar-blind ultraviolet detection based on TiO2 nanoparticles decorated graphene field-effect transistors

Solar-blind ultraviolet detection based on TiO2 nanoparticles decorated graphene field-effect transistors

Sensitive solar-blind ultraviolet (UV) photodetectors are important to various military and civilian applications, such as flame sensors, missile interception, biological analysis, and UV radiation monitoring below the ozone hole. In this paper, a …

Measuring circular phase-dichroism of chiral metasurface

Measuring circular phase-dichroism of chiral metasurface

The ability of chiral media to differentiate circularly polarized light is conventionally characterized by circular dichroism (CD) which is based on the difference in the absorption of the incident light for different polarizations. Thus, CD probes …

Highly efficient plasmonic nanofocusing on a metallized fiber tip with internal illumination of the radial vector mode using an acousto-optic coupling approach

Highly efficient plasmonic nanofocusing on a metallized fiber tip with internal illumination of the radial vector mode using an acousto-optic coupling approach

Tip-based plasmonic nanofocusing, which delivers light into a nanoscale region and achieves localized electromagnetic (EM) field enhancement beyond the diffraction limit, is highly desired for light-matter interaction-based super-resolution imaging. …

Tunable Brillouin and Raman microlasers using hybrid microbottle resonators

Tunable Brillouin and Raman microlasers using hybrid microbottle resonators

We realized a tunable Brillouin laser and a tunable Raman laser by using ultrahigh-quality-factor (Q) hybrid microbottle resonators. The whispering-gallery-mode microresonator-based Brillouin and Raman lasers possess unique advantages (e.g. low …

Importance of higher-order multipole transitions on chiral nearfield interactions

Importance of higher-order multipole transitions on chiral nearfield interactions

Surface-enhanced circular dichroism (SECD) of chiral molecules adsorbed on plasmonic nanostructures can substantially enhance chiroptical molecular signals by several orders, which is otherwise very weak to be directly measured. Several mechanisms …