The subwavelength nature of the plasmonic mode can be regarded as a reduction in the diffraction limit, which is associated with a large effective index of the SPP, Δx ~ λ/2neff, with the spatial confinement being limited only by the size of the tip itself. Uniform silver nanowires synthesis by reducing AgNO. Nano Lett 2017;18:881–5. Nature 2004;431:826–9.

Uebel P, Bauerschmidt ST, Schmidt MA, St.J.

For imaging applications, it has been shown that such tips allows spatial resolution in the order of ~70 nm by passing light to the fiber twice [17]. From Ref. Novotny L, Hecht B. Reprinted with permission from Ref. Schmidt M, Russell PSJ. The end-face was then coated with a 80 nm gold film, and two apertures were subsequently milled, which possess a 40 nm gap. Photonic crystal fibers. The first involves tailoring the light guidance by modifying the core and cladding either via an appropriate microstructuring or nanostructuring (such as in photonic crystal fibers [1]) or by composited materials (such as in hybrid multimaterial fibers [2], [3], [4]), both of which have led to important developments in multifunctional fiber-based devices, e.g. [70]. Synthetic biology (SB) has emerged as one of the newest and promising areas of bio-technology. The plausible release of deeply engineered or even entirely synthetic/artificial microorganisms raises the issue of their intentional (e.g. However, these plasmonic nanoconcentrators are still interrogated from free space. Delivering light to the nanoscale using a flexible and straightforward-to-use fiber platform will open new opportunities in various fields of quantum science and bioscience, e.g. for nonlinear light generation [5], [6], sensing [7], [8], and optoelectronics [9], to name a few. (C) 3D finite element simulations showing the Poynting vector magnitude distribution in the vicinity of the nanowire. In collection mode, the light polarized along the taper tip axis was collected and converted into an RP mode in the fiber, which was applied to detecting the transversal fields of scattered modes.

However, for smaller diameters, the modes cut off at a significant distance before reaching the end of the fiber and only its evanescent tail reaches the actual aperture at the fiber end, leading to low optical throughput, typically in the order of 10−5 [20].

They adapted existing techniques [78] for coupling to plasmonic nanowires and nanocircuits via optical fibers, which relied on the nanowire resting on a substrate, to produce nanowires that are monolithically attached to the fiber in free space.

Near-field plasmonic probe with super resolution and high throughput and signal-to-noise ratio. Plasmonic near-field probes: a comparison of the campanile geometry with other sharp tips. In: Conference on Lasers and Electro-Optics: CLEO: Applications and Technology 2017, San Jose, California, United States, 14–19 May 2017.

(E) Calculated mode profiles for the corresponding RP modes of fiber (left) and SPP (right). The full coupling process subtly depends on shape of the tip, taper angle, modal transition length, and metal film thickness: up to 40% tip transmission can be reached in the visible. Currently, he holds two courses in: The infrastructure at the Leibniz Institute of Photonic Technology and the laboratories led by Prof. Schmidt offer a wide range of methods for the fabrication and characterization of all kinds of optical fibers, including: link to the Fiber Optics Group of the IPHT Jena, Image: Jan-Peter Kasper (University of Jena).

ACS Nano, 2015. hollow core and metamaterial fibers), special materials in fibers (e.g.

Finden Sie Top-Angebote für Markus Schmidt "Jena" bei eBay. Anker JN, Hall WP, Lyandres O, Shah NC, Zhao J, Van Duyne RP. Inset: field enhancement at the plasmonic tip due to the axially polarized mode. The antisymmetric transverse electric field pattern (Figure 12B) of the nanofilm at the tip indicates that this excitation scheme excites an SR surface plasmon in the thin-film region at the tip. Furthermore we are targeting electrically active fibers for electro-static particle traps, and we are keen on placing unusual materials into the fibers such as chalcogenide, liquids or semiconductors to implement all kinds of in-fiber devices in areas such as nonlinear optics, modulators or integrated detectors.

nanocone) with apex size of <10 nm. Opt Lett 2014;39:6415–7. Neumann L, Pang Y, Houyou A, Juan ML, Gordon R, Van Hulst NF. Lee H, Schmidt M, Russell R, et al. Sensitive liquid refractive index sensors using tapered optical fiber tips. Rev Mod Phys 2017;89:045003. This comparably simple structure is quite challenging to fabricate even using splice-and-pressure-assisted melt filling of gold, whereas the issues of core/nanocone alignment and air gaps at the splice point introduce additional losses and scattering at the fiber/nanowire junction. (C) SEM image of the gold nanowire protruding from the end of the fiber probe. Nano Lett 2010;10:592–6. The actual resonator is overlaid with a semitransparent blue area for better visibility. An antisymmetric mode (with respect to the transverse electric field) that incident from the left-handed side excites a plasmonic mode that leads to energy concentration at the location of smallest gold film thickness. Opt Express 2014;22:10072–80. High-quality near-field optical probes by tube etching. Summary of the important properties of the various fiber-compatible nanoconcentrators discussed in this review.

Sensors 2010;10:9397–406.

Subwavelength-diameter silica wires for low-loss optical wave guiding.