Abstract:
A sample investigation system (ES) in functional combination with an alignment systen (AS), and methodology of enabling very fast, (eg. seconds), sample height, angle-of-incidence and plane-of -incidence adjustments, with application in mapping ellipsometer or the like systems.
Abstract:
The present invention concerns a device for sorting and concentrating electromagnetic energy impinging a surface of said device, said surface comprising at least one plasmonics-based surface structure or similar structure of periodic or quasi-periodic surface topography. Device characterised in that said surface (V) is provided with at least two such surface structures (2), acting as individual concentrator structures, which are at least partially spatially overlapped or superposed.
Abstract:
The present invention concerns a device for sorting and concentrating electromagnetic energy impinging a surface of said device, said surface comprising at least one plasmonics-based surface structure or similar structure of periodic or quasi-periodic surface topography. Device characterised in that said surface (V) is provided with at least two such surface structures (2), acting as individual concentrator structures, which are at least partially spatially overlapped or superposed.
Abstract:
An imager comprising a detector (14) having at least one element sensitive to radiation having a first polarisation and at least one element sensitive to radiation having a second polarisation and means for simultaneously directing (12) from the same scene or point of a scene radiation of the first polarisation onto the first polarisation element and radiation of the second polarisation onto the second polarisation element. Preferably, the detector (14) consists of a two dimensional array of elements.
Abstract:
The invention relates to a microscope for transmitted light examination of objects, with a beam path between an illumination apparatus and an apparatus for viewing/detecting an object image, in particular a camera, in which an interferometer is arranged in the beam path, which interferometer has means for changing the polarization (4) and means, which are independent thereof, for changing the relative phase (6) in at least one of the partial beams (II) of the interferometer. The invention relates furthermore to a method for transmitted light microscopy of objects (8, 9), in which the beam path between an illumination apparatus (1) and an apparatus (15) for viewing/detecting an object image extends through an interferometer (II, III), with at least one image of an object (8, 9), in particular a series of images, being recorded using a camera (15), in particular as a function of a position of the polarization and/or of the phase of the light in at least one of the partial beams (II, III) of the interferometer.
Abstract:
There is provided an optical power switching device, including at least one plate made of transparent dielectric material, a thin, electrically conductive, metallic material coated on one side of the plate, wherein, upon being exposed to an optical power beam having a power level exceeding a predetermined threshold focused thereon, the layer of conductive material forms a plasma, damaging the dielectric material, thereby rendering the portion of the surface of the plate under the impinging beam opaque to light. A method for reducing or interrupting optical transmission in response to the transmission of excessive optical power or energy is also provided.
Abstract:
Bei einer Messanordnung mit einer Optikeinrichtung, in die zur Messung ein von einer Probe ausgehendes, divergierendes Strahlenbündel (10) eingekoppelt wird, und weiter mit einem der Optikeinrichtung nachgeordneten Detektor (13), der eine Vielzahl von in einer Ebene angeordneten, unabhängig voneinander auswertbaren Detektorpixeln aufweist, wobei die Optikeinrichtung (11) das divergierende Strahlenbündel (10) in einer ersten Richtung quer zur Ausbreitungsrichtung des Strahlenbündels (10) spektral zerlegt und auf den Detektor (13) lenkt, parallelisiert die Optikeinrichtung das Strahlenbündel auch noch, bevor es auf den Detektor (13) trifft, in einer zweiten Richtung quer zur Ausbreitungsrichtung derart, dass in der zweiten Richtung benachbarte Strahlen des auf den Detektor (13) treffenden Strahlenbündels zueinander parallel verlaufen.
Abstract:
Plural electronic or optical images are provided in a streak optical system, as for instance by use of plural slits instead of the conventional single slit, to obtain a third, fourth, etc. dimension - rather than only the conventional two, namely range or time and azimuth. Such additional dimension or dimensions are thereby incorporated into the optical information that is to be streaked and thereby time resolved. The added dimensions may take any of an extremely broad range of forms, including wavelength, polarization state, or one or more spatial dimensions - or indeed virtually any optical parameter that can be impressed upon a probe beam. Resulting capabilities remarkably include several new forms of lidar spectroscopy, fluorescence analysis, polarimetry, spectropolarimetry, and combinations of these, as well as a gigahertz wavefront sensor.
Abstract:
Apparatus (1200, 1300) and accompanying methods to visualize and calculate, by direct visual measurement and interpolation, polarized light, in the form of sphere (observable polarization sphere - OPS) along with its associated spherical coordinate system consisting of latitudes and longitudes, which maps transformation of the state(s) of polarization (SOP) of an optical beam that propagates through either a single optical device (generally a "media) or a series of optical devices (mediums), e.g., phase shifters (waveplates, compensators), attenuators (polarizers), and field rotators. The OPS can be used to calculate and display phase shifting of the polarization state of an optical beam as it propagates through each such polarizing media. The OPS describes the behavior of a rotated ideal linear polarizer on a propagating polarized optical beam, as well as polarized light in many regions of the electro-magnetic spectrum.
Abstract:
An improved ellipsometry method and a self-correcting simultaneous multiple angle/multiple wavelength return path ellipsometer (20) are disclosed which allow for simultaneous measurement at multiple angles of incidence in a manner which permits separation of instrument error from the measured properties. Non-sample optical system ellipsometric effects of the ellipsometer are measured and the measured changes in polarization state are corrected to eliminate errors introduced thereby. The disclosed embodiment is self-correcting by way of a convex reflector (6) which can be inserted into and removed from the optical path of the beam of polarized light between a focusing optic (5) and the sample optical system (7) under study. The convex reflector (6) when inserted into the optical path causes the light rays of the beam of polarized light in each of the plurality of angles of incidence to retrace its path through the focusing optic (5) for detection by a detector array (10) without undergoing reflection and re-reflection as during a sample measurement configuration of the ellipsometer (20) is removed from the optical path.