3 edition of Interferometric and optical tests of water window imaging X-ray microscopes found in the catalog.
Interferometric and optical tests of water window imaging X-ray microscopes
R. Barry Johnson
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va
Written in English
|Statement||prepared by Center for Applied Optics, University of Alabama in Huntsville, Huntsville, Alabama.|
|Series||[NASA contractor report] -- NASA CR-193866., NASA contractor report -- NASA CR-193866.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
Unlike other imaging techniques, for example, scanning electron microscopy (SEM), transmission electron microscopy (TEM) or X-ray microscopy, DH . Nikon Metrology's White Light INterferometric Microscopes has high-speed, high-precision measurement of surface profiles based on omnifocal camera system.
Interferometric microscopy or imaging interferometric microscopy is the concept of microscopy which is related to holography, synthetic-aperture imaging, and off-axis-dark-field illumination erometric microscopy allows enhancement of resolution of optical microscopy due to interferometric (holographic) registration of several partial images (amplitude and phase) and the. Soft X-ray microscopes typically use photons with energies within the range eV (5 nm) to eV ( nm). For biological imaging, the most important region of this energy range is between the K shell absorption edges of carbon ( eV, λ= nm) and oxygen ( eV, λ= nm).
Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed, causing the phenomenon of interference, which is used to extract information. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to . Optical Coherence Tomography (OCT) has been established as imaging technology, since the introduction as low-coherence interferometric technique in the s [1,2] and somewhat later also realized in its microscopic version as Optical Coherence Microscopy (OCM) .
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Pleased to submit this final report entitled "Interferometric and Optical Tests of Water Window Imaging X-ray Microscopes" that documents the activities and results for NASA P.O No.
Under previous efforts, NASA/MSFC has fabricated normal-incidence multilayer optical systems for the Water Window Imaging X-ray Microscope program. Under. Interferometric tests of Schwarzchild X-ray Microscope are performed to evaluate the optical properties and alignment of the components.
Photographic measurements of Author: R. Barry Johnson. Get this from a library. Interferometric and optical tests of water window imaging X-ray microscopes: final report. [R Barry Johnson; United States. National Aeronautics and Space Administration.].
Interferometric tests of Schwarzchild X-ray Microscope are performed to evaluate the optical properties and alignment of the components. Photographic measurements of the spatial resolution, focal properties, and vignetting characteristics of the prototype Water Window Imaging X-ray Microscope are made and analyzedAuthor: R.
Barry Johnson. A distillation of Dr. Wyant's course at the University of Arizona, this Field Guide covers the key fundamentals of interferometry, types of interferometers and interferograms, concepts of phase-shifting interferometry, long-wavelength interferometry, testing of aspheric surfaces, measurement of surface microstructure, flat and curved surface testing, and absolute measurements.
We present a laser plasma based x-ray microscope for the water window employing a high-average power laser system for plasma generation.
At 90 W laser power a brightness of x photons/(s x sr x μm2) was measured for the nitrogen Lyα line emission at nm. Using a multilayer condenser mirror with % reflectivity photons/(μm2 x s) were obtained in the object plane.
understand the aim of the project - interferometric optical testing for high res-olution imaging in an optical lattice. Topics include how wavefront distortions a ect the resolution of an imaging system, the motivation for site-resolved imag-ing in an optical lattice, and key concepts in using interferometers to test the quality of optical.
Thus an oxygen Kα x-ray source is suitable for a water window 3D x-ray microscope if a sufficient amount of x-ray photons is available on the image plane. An electron-impact type oxygen K α source with a water-jet anode was successfully demonstrated and the brightness of the K α line of × 10 9 photons/s/sr/μm 2 at W electron beam.
interferometric test results. Figure shows the moiré pattern (or beat pat-tern) produced by two identical straight-line gratings rotated by a small angle relative to each other. A dark fringe is produced where the dark lines are out of step one-half period, and a bright fringe is produced where the dark lines for.
We have designed, analyzed, fabricated, and tested Schwarzschild multilayer X-ray microscopes. These instruments use flow-polished Zerodur mirror substrates which have been coated with multilayers optimized for maximum reflectivity at normal incidence at A.
They are being developed as prototypes for the Water Window Imaging X-Ray Microscope. Interferometric time-stretch microscopy for ultrafast quantitative cellular and tissue imaging at 1 μm image of an oil-in-water emulsion obtained by iTS microscopy at 1 MHz line-scan rate. Interferometric synthetic aperture microscopy Computational adaptive optics Computed optical imaging Adaptive optics Wavefront shaping Aberrations Inverse Problem This is a preview of subscription content, log in to check access.
Optical interferometry is used in communications, medical imaging, astonomy, and structural measurement. With the use of an interferometer engineers and scientists are able to complete surface inspections of micromachined surfaces and semiconductors. Soft X-ray microscopes use photons with energies in the ‘water window’ (the region of the spectrum between the K shell absorption of carbon and oxygen).
Thus, carbon-containing organic material and nitrogen-containing organic material absorb the X-rays at much higher magnitude than water. An interferometer is an instrument that compares the position or surface structure of two objects.
The basic two-beam division of amplitude interferometer components consists of a light source, a beamsplitter, a reference surface, and a test surface (Figure 1).The beamsplitter creates the reference and test beams from a single light source.
We introduce and demonstrate a new microscopy concept: imaging interferometric microscopy (IIM), which is related to holography, synthetic-aperture imaging, and off-axis–dark-field illumination techniques.
IIM is a wavelength-division multiplex approach to image formation that combines multiple images covering different spatial-frequency regions to form a composite image with a resolution.
Telescope Optical Performance Testing. These tests were telescopes (A, A, and two 44A) were mounted and interferometric alignment testing was performed. Electronics were mounted, cameras were loaded with test film and mounted, and telescopes were shimmed to their January "Development of the Water Window Imaging X-Ray.
The authors have theoretically designed and analyzed the optical components and mechanical structures for an imaging x-ray microscope which will be configured to operate in the water window.
This instrument affords new and noninvasive strategies for examining living tumor cells without the use of dyes, stains or other exogenous chemicals, which. Purchase Optical Interferometry, 2e - 1st Edition. Print Book & E-Book. ISBN Kirz, one of the pioneers of x-ray microscopy, summarized the field in a whimsical look the history of x-ray microscopy: 'This is a story of spies, heroes, villains, false starts, and a brush with real fame.'(Kirz and Jacobsen ).The discovery of x-rays by Röntgen () in led not only to a revolution in medical imaging but also in many other fields of modern science.
By rotating the optical axis of the lens under test with respect to the axis of the measurement beam, performance at various field angles can be determined. Lens/System Performance - Alternate Method For lenses or systems with finite conjugates, or for systems with apertures larger than the sample beam of the interferometer, an alternate setup.
Optical interferometry is a powerful technique to make images on angular scales hundreds of times smaller than is possible with the largest telescopes. This concise guide provides an introduction to the technique for graduate students and researchers who want to make interferometric observations and acts as a reference for technologists Reviews: 1.
Building on recent advances in the experimental approach (fig. S2) that improved imaging contrasts for interferometric scattering microscopy (15, 16), we were able to obtain high-quality images of single proteins as they diffused from solution to bind nonspecifically to the microscope coverslip/solution interface (Fig.
1, B and C, and movie S1).