Issue 7 (2018)

Semiconductor nanostructures for flying q-bits and green photonics

Semiconductor nanostructures for flying q-bits and green photonics

Breakthroughs in nanomaterials and nanoscience enable the development of novel photonic devices and systems ranging from the automotive sector, quantum cryptography to metropolitan area and access networks. Geometrical architecture presents a design …

From photoinduced electron transfer to 3D metal microstructures via direct laser writing

From photoinduced electron transfer to 3D metal microstructures via direct laser writing

We review the fundamental concepts of direct laser writing (DLW) of 3D metallic structures via photoreduction and give an overview over the state-of-the-art. On the one hand, metallic microstructures and nanostructures play an important role in …

Interfacing optical fibers with plasmonic nanoconcentrators

Interfacing optical fibers with plasmonic nanoconcentrators

The concentration of light to deep-subwavelength dimensions plays a key role in nanophotonics and has the potential to bring major breakthroughs in fields demanding to understand and initiate interaction on nanoscale dimensions, including molecular …

Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna

Waveguide excitation and collection of surface-enhanced Raman scattering from a single plasmonic antenna

The integration of plasmonic antennas on single-mode silicon nitride waveguides offers great perspective for integrated surface-enhanced Raman spectroscopy (SERS). However, the few reported experimental demonstrations still require multiple …

Optofluidic laser based on a hollow-core negative-curvature fiber

Optofluidic laser based on a hollow-core negative-curvature fiber

An optofluidic laser based on a hollow-core negative-curvature fiber (HC-NCF) is proposed and demonstrated. The submicron-thick circular capillary tubes embedded in the cladding of the HC-NCF act as antiresonant elements and are used as both a …

Single particle dark-field spectroscopy of spherical dimers with down to sub-10 nm gaps fabricated by the annealing of nano-pillars

Single particle dark-field spectroscopy of spherical dimers with down to sub-10 nm gaps fabricated by the annealing of nano-pillars

In this paper we present a method for the fabrication of plasmonic spherical dimers and oligomers with narrow gaps and tunable distances. High-aspect-ratio nano-pillars are created by the two-step evaporation of gold on structured substrates. By …

Directional surface plasmon-coupled emission of tilted-tip enhanced spectroscopy

Directional surface plasmon-coupled emission of tilted-tip enhanced spectroscopy

Understanding the spatial radiation pattern in tip-enhanced spectroscopy (TES) is crucial for plasmon-enhanced spectroscopy, chemical analysis and biochemical sensing. Although the TES technique has many excellent advantages, there is still room for …

Electrically tuned whispering gallery modes microresonator based on microstructured optical fibers infiltrated with dual-frequency liquid crystals

Electrically tuned whispering gallery modes microresonator based on microstructured optical fibers infiltrated with dual-frequency liquid crystals

An electrically tunable whispering gallery mode (WGM) microresonator based on an HF-etched microstructured optical fiber (MOF) infiltrated with dual-frequency liquid crystals (DFLCs) is proposed and experimentally demonstrated for the investigation …

The transition from incoherent to coherent random laser in defect waveguide based on organic/inorganic hybrid laser dye

The transition from incoherent to coherent random laser in defect waveguide based on organic/inorganic hybrid laser dye

This paper systematically demonstrated a variety of experimental phenomena of random lasers (RLs) of N,N?-di-(3-(isobutyl polyhedral oligomeric silsesquioxanes)propyl) perylene diimide (DPP) organic/inorganic hybrid laser dye, which is composed of …