Negative Refraction Makes a Perfect Lens
... Optical lenses have for centuries been one of scientists’ prime tools. Their operation is well understood on the basis of classical optics: curved surfaces focus light by virtue of the refractive index contrast. Equally their limitations are dictated by wave optics: no lens can focus light onto an a ...
... Optical lenses have for centuries been one of scientists’ prime tools. Their operation is well understood on the basis of classical optics: curved surfaces focus light by virtue of the refractive index contrast. Equally their limitations are dictated by wave optics: no lens can focus light onto an a ...
00 Fourier optics – 4f Arrangement – Filtering and reconstruction
... to eliminate the disturbances of the wave front, which result from soiling of the lenses, in a beam expansion by a microscope’s objective (as E25x in this experiment). Another direct application of low-pass filtration is the elimination of raster lines in composite images. For example, in astronomy, ...
... to eliminate the disturbances of the wave front, which result from soiling of the lenses, in a beam expansion by a microscope’s objective (as E25x in this experiment). Another direct application of low-pass filtration is the elimination of raster lines in composite images. For example, in astronomy, ...
Toward the development of a Three-Dimensional Mid–Field Microscope
... slightly improves the spatial resolution of conventional microscopy3 (a factor of 2 ). Near field microscopy4 improves the resolution much further and allows an optical resolution of ~50 nm in the plane and ~5 nm along the optical axis (perpendicular to the sample surface). This is achieved by a se ...
... slightly improves the spatial resolution of conventional microscopy3 (a factor of 2 ). Near field microscopy4 improves the resolution much further and allows an optical resolution of ~50 nm in the plane and ~5 nm along the optical axis (perpendicular to the sample surface). This is achieved by a se ...
SiDIMEX2017
... The technique of imaging of fast processes at high intensity synchrotron radiation (SR) beam is developed in the Budker Institute of Nuclear Physics since the beginning of 2000s. The DIMEX (Detector for Imaging of Explosions) based on gas ionization chamber is working at the channel 0 at the VEPP-3 ...
... The technique of imaging of fast processes at high intensity synchrotron radiation (SR) beam is developed in the Budker Institute of Nuclear Physics since the beginning of 2000s. The DIMEX (Detector for Imaging of Explosions) based on gas ionization chamber is working at the channel 0 at the VEPP-3 ...
375_Lo.pdf
... on optical coherence-domain reflectometry (OCDR) [1]. From then on, many reports in OCT have presented. The subjects of these research include improving the axial resolution with the thermal light source [2], combing OCT with confocal system [3], developing various modulation methods in Doppler OCT ...
... on optical coherence-domain reflectometry (OCDR) [1]. From then on, many reports in OCT have presented. The subjects of these research include improving the axial resolution with the thermal light source [2], combing OCT with confocal system [3], developing various modulation methods in Doppler OCT ...
Loss measurements on semiconductor lasers by
... We present a study on a novel method for the determination of the cavity losses in semiconductor lasers. The method we use involves Fourier analysis of the Fabry–Pérot mode spectrum when operating the device below lasing threshold. The observation of the decay rate of higher order harmonics in the ...
... We present a study on a novel method for the determination of the cavity losses in semiconductor lasers. The method we use involves Fourier analysis of the Fabry–Pérot mode spectrum when operating the device below lasing threshold. The observation of the decay rate of higher order harmonics in the ...
Break-up of two-dimensional bright spatial solitons due to transverse
... Solitary wave (self-bound) solutions of nonlinear propagation equations are a fascinating topic of nonlinear dynamics. The analysis of their stability and nonlinear evolution properties is one of the most crucial parts of the problem of self-trapping of optical beams. Much research has been devoted ...
... Solitary wave (self-bound) solutions of nonlinear propagation equations are a fascinating topic of nonlinear dynamics. The analysis of their stability and nonlinear evolution properties is one of the most crucial parts of the problem of self-trapping of optical beams. Much research has been devoted ...
Design of illumination and projection optics for projectors with single
... To eliminate the light path interference and to maximize the contrast ratio, we incorporated a new light separator into the projection system. The light separator is an integral feature of the compound prism system to steer the light onto and away from the DMD. As shown in Fig. 3, the prism system c ...
... To eliminate the light path interference and to maximize the contrast ratio, we incorporated a new light separator into the projection system. The light separator is an integral feature of the compound prism system to steer the light onto and away from the DMD. As shown in Fig. 3, the prism system c ...
Radially and azimuthally polarized beams generated by space
... gratings behave as layers of a uniaxial crystal with the optical axes perpendicular and parallel to the grating grooves.6 The effective birefringence of these gratings depends on their structure, and therefore by correctly controlling the structure one can create any desired wave plate. Assume that ...
... gratings behave as layers of a uniaxial crystal with the optical axes perpendicular and parallel to the grating grooves.6 The effective birefringence of these gratings depends on their structure, and therefore by correctly controlling the structure one can create any desired wave plate. Assume that ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.