Abstract:
Die Erfindung betrifft eine Anordnung zur Detektion der Intensitätsverteilung von Komponenten des elektromagnetischen Feldes in Strahlungsbündeln. Die Aufgabe der Erfindung wird erfindungsgemäß gelöst, indem ein hochauflösendes zweidimensionales Intensitätssensorarray (1) und ein Feldvektor-Detektorarray (2), bestehend aus verschiedenen Bereichen (22, 23, 24) mit individuellen Detektorstrukturen (211, 212 213) für zwei transversale und longitudinale Feldvektorkomponente E x , E y , E z , kombiniert sind, wobei die Detektorstrukturen (211, 212, 213) metallische mantelförmige Spitzen (3, 4) mit unterschiedlichen Apizes (33, 44) als Nanostrukturen ausgebildet sind, um lokalisierte Plasmonresonanz (LPR) der individuellen Detektorstrukturen (211, 212, 213) und durch LPR angeregte lokalisierte Oberflächenplasmonen (LSP) für eine Polarisationsselektion der Feldverteilung nach Feldvektorkomponenten E x , E y , E z zu nutzen und mittels Oberflächenplasmonpolaritonen (SPP) und Wellenleitung (WGM) zu zugeordneten Sensorelementen (11) zu übertragen.
Abstract:
The present disclosure generally relates to an evanescent microwave microscopy probe and methods for making and using the same. Some embodiments relate to a probe which is constructed of silver. Other embodiments relate to a method of measuring an unknown property a target material, comprising moving the probe away from the target material, taking a first measurement, moving the probe such that it touches the target material, taking a second measurement, and comparing the first and second measurements in order to measure the unknown property.
Abstract:
The invention relates to a probe for an optical near field microscope, said probe comprising a planar carrier carrying a probe tip at least partially consisting of a transparent material. The invention also relates to a method for producing one such probe. The aim of the invention is to provide a probe for an optical near field microscope and a method for the production thereof, whereby the probe can be produced with high reproducibility according to a simple technology and can have a simple but efficient light supply. To this end, the carrier of one such probe comprises an optical waveguide, and the inventive method comprises the following steps: a coating comprising an optical waveguide is applied to a substrate in a first step; a transparent layer is applied in a second step, such that the optical waveguide is arranged between the substrate and the transparent layer; the transparent layer is masked in at least one region above the probe tip in a third step; and the transparent layer is etched, forming the probe tip, in a fourth step.
Abstract:
The invention relates to a probe for an optical near field microscope, said probe comprising a tip which is formed on a self-contained carrier, and to a method for producing the same. The aim of the invention is to provide a probe for an optical near field microscope and a method for the production thereof, whereby the probe has a tip with a very small aperture diameter and can thus be produced in a reproducible manner, according to a simple, advantageously controllable method. To this end, the inventive probe is characterised in that the probe tip is embodied as a complete structure which is applied to a planar surface of the carrier, and the inventive method comprises the following steps: a transparent layer is applied to a substrate, the thickness of the transparent layer corresponding to at least the height of the probe tip; the transparent layer is masked in at least one region of the probe tip; and the transparent layer is etched, forming the probe tip.
Abstract:
A multiple source array for illuminating an object including: a reflective mask having an array of spatially separated apertures; at least one optic positioned relative to the mask to form an optical cavity with the mask; and a source providing electromagnetic radiation to the optical cavity to resonantly excite a mode supported by the optical cavity, wherein during operation a portion of the electromagnetic radiation built-up in the cavity leaks through the mask apertures towards the object.
Abstract:
Systems and methods for near-field, interferometric microscopy are disclosed in which a mask having an array of sub-wavelength apertures is used to couple near-field probe beams to a sample. The periphery of the mask further includes one or more larger apertures to couple light to the sample that forms the basis of an interferometric signal indicative of the relative distance between the mask and the sample. The interferometric signal can be the basis of a control signal in a servo system that dynamically positions the mask relative to the sample.
Abstract:
A low-loss optical micro cantilever (10) comprises a support (1), an optical waveguide (2), an opaque film (3), a reflective film (4), a chip (5) with a pointed end, a minute opening (6) in the pointed of the chip (5), and a reflective mirror (7) for directing the light (H) from an optical input/output end (8) of the optical waveguide (2) toward the minute opening (6).