Far-Field Optical Superlens
... The image processing procedure used here is rather straightforward compared with that used in MRI and X-ray crystallography. In fact, direct FSL imaging without postimaging processing can also be performed by using all optical hardware after FSL such as beam splitters, lens, and gratings. Combining ...
... The image processing procedure used here is rather straightforward compared with that used in MRI and X-ray crystallography. In fact, direct FSL imaging without postimaging processing can also be performed by using all optical hardware after FSL such as beam splitters, lens, and gratings. Combining ...
PDF
... phase information of the first lens of the lens system. It then intercepts the state-兩1典 wave-packet component and adds the phase 1共x , y兲. After some time the state-兩1典 component has evolved due to the first lens such that it is an appropriate size for exposure to the phase information correspondi ...
... phase information of the first lens of the lens system. It then intercepts the state-兩1典 wave-packet component and adds the phase 1共x , y兲. After some time the state-兩1典 component has evolved due to the first lens such that it is an appropriate size for exposure to the phase information correspondi ...
5. INTERFERENCE. Introduction.
... and its vector quality when discussing polarization. The vector nature of the electric field is an important property because it is frequently the case that there are several electromagnetic waves from different sources or more frequently different parts of the same source, and the need is to find t ...
... and its vector quality when discussing polarization. The vector nature of the electric field is an important property because it is frequently the case that there are several electromagnetic waves from different sources or more frequently different parts of the same source, and the need is to find t ...
ENT 163 09-08 - UniMAP Portal
... Because the coils are placed 120° apart, the induced voltages in the coils are equal magnitude but out of phase by 120 °. ...
... Because the coils are placed 120° apart, the induced voltages in the coils are equal magnitude but out of phase by 120 °. ...
Polarization Beam Splitter Based on Self
... self-collimation has been employed in many schemes for a large variety of device applications ranging from bends, splitters, interferometers to filters and detectors. In particular, the self-collimation effect is very preferable for device implementations on-chip integrated photonic circuits due to ...
... self-collimation has been employed in many schemes for a large variety of device applications ranging from bends, splitters, interferometers to filters and detectors. In particular, the self-collimation effect is very preferable for device implementations on-chip integrated photonic circuits due to ...
Non-reciprocal ultrafast laser writing
... along the z axis was therefore discovered. A similar mirror change of phase profiles, was also observed for the line structures, without strong damage features, when written with a pulse energy of 2 mJ. We also used different writing speeds and observed that the linewidth increases when the scan spe ...
... along the z axis was therefore discovered. A similar mirror change of phase profiles, was also observed for the line structures, without strong damage features, when written with a pulse energy of 2 mJ. We also used different writing speeds and observed that the linewidth increases when the scan spe ...
Sample pages 2 PDF
... fields containing a very small number of photons have been generated. A more typical optical field will involve a superposition of number states. One such field is the coherent state of the field which has the minimum uncertainty in amplitude and phase allowed by the uncertainty principle, and hence ...
... fields containing a very small number of photons have been generated. A more typical optical field will involve a superposition of number states. One such field is the coherent state of the field which has the minimum uncertainty in amplitude and phase allowed by the uncertainty principle, and hence ...
Blooming Thermal- Laboratory Experiments Bernadette Johnson
... turned on, the outgoing laser beam entered the blooming cell with the conjugate of the phase the beam would encounter in the blooming medium already applied to the beam. Tilt compensation was based either on tilt estimates made by the reconstructor or on independent measurements in a tilt-sensing lo ...
... turned on, the outgoing laser beam entered the blooming cell with the conjugate of the phase the beam would encounter in the blooming medium already applied to the beam. Tilt compensation was based either on tilt estimates made by the reconstructor or on independent measurements in a tilt-sensing lo ...
Enhancement of image quality and imaging depth with Airy light
... high-resolution, single-photon excitation LSM, as these beam types overcome diffraction and can maintain a constant beam profile over longer longitudinal distances than a Gaussian beam. The lower peak intensity used in Airy LSM further reduces photodamage in the sample [9]. Bessel beam-based LSM has ...
... high-resolution, single-photon excitation LSM, as these beam types overcome diffraction and can maintain a constant beam profile over longer longitudinal distances than a Gaussian beam. The lower peak intensity used in Airy LSM further reduces photodamage in the sample [9]. Bessel beam-based LSM has ...
Get PDF - OSA Publishing
... process is used to pump a Λ atomic system. Furthermore, the phase effect on the optical steady-state behaviors including OB and OM have also been studied in atomic systems confined in an optical ring cavity [19–21]. For example, Gong and co-workers [19,20] showed that the phase fluctuation of the co ...
... process is used to pump a Λ atomic system. Furthermore, the phase effect on the optical steady-state behaviors including OB and OM have also been studied in atomic systems confined in an optical ring cavity [19–21]. For example, Gong and co-workers [19,20] showed that the phase fluctuation of the co ...
z - at www.arxiv.org.
... and 4 are not so spectacular as the explicit trajectories of figures 2, they offer additional information relating the rate of the OV motion caused by the uniform motion of the screen edge (in other words, the sensitivity of the OV position to the screen displacements). In this context, it is intere ...
... and 4 are not so spectacular as the explicit trajectories of figures 2, they offer additional information relating the rate of the OV motion caused by the uniform motion of the screen edge (in other words, the sensitivity of the OV position to the screen displacements). In this context, it is intere ...
Noise-equivalent sensitivity of photoacoustics
... photoacoustics (CW-PA) directly relates to integration time Δt by Δf ¼ 1∕ð2ΔtÞ. Under the optimum intensity-modulated illumination conditions described in Sec. 2.1 and summarized in Eq. (10), the power from a single molecule (m ¼ 1) at f o is given by ...
... photoacoustics (CW-PA) directly relates to integration time Δt by Δf ¼ 1∕ð2ΔtÞ. Under the optimum intensity-modulated illumination conditions described in Sec. 2.1 and summarized in Eq. (10), the power from a single molecule (m ¼ 1) at f o is given by ...
non linear optics - Department of Physics and astronomy, Faculty of
... is over the length of the nonlinear medium, starting at z0. The harmonic radiation is generated with a confocal parameter b, similar to that of the fundamental wave. The beam waist radius is therefore narrower by a factor of q . The integral can be evaluated numerically and in approximating cases al ...
... is over the length of the nonlinear medium, starting at z0. The harmonic radiation is generated with a confocal parameter b, similar to that of the fundamental wave. The beam waist radius is therefore narrower by a factor of q . The integral can be evaluated numerically and in approximating cases al ...
NSS-MIC 2009 Conference Record Template
... have shown in a previous paper [6] several factors contribute to the rise time of the signal produced by a scintillator. Some of them are related to the light production mechanisms and we have discussed them in detail in [6]. But we have also shown in [7] that the light transport from the emission p ...
... have shown in a previous paper [6] several factors contribute to the rise time of the signal produced by a scintillator. Some of them are related to the light production mechanisms and we have discussed them in detail in [6]. But we have also shown in [7] that the light transport from the emission p ...
Governing the speed of light and its application to the
... part of the refractive index n. When the medium shows so-called normal dispersion (δn’/δω>0), i.e. vgc0/n’, the case
is referred to as fast light propagation. The Kramers-Kroenig (KK) ...
... part of the refractive index n. When the medium shows so-called normal dispersion (δn’/δω>0), i.e. vg
Second harmonic generation via total internal reflection quasi
... the input/output polarization of the propagating waves 2. The effective nonlinear d coefficient (deff) can also change sign after reflection depending on the selection of the input/output polarization which will result in an extra phase shift (ξπ) with ξ being 1 or 0 depending on the inversion of de ...
... the input/output polarization of the propagating waves 2. The effective nonlinear d coefficient (deff) can also change sign after reflection depending on the selection of the input/output polarization which will result in an extra phase shift (ξπ) with ξ being 1 or 0 depending on the inversion of de ...
Pulse splitting by modulating the thickness of buffer layer of two
... Figure 4(a) and 4(b) show the instantaneous diffracted intensity distributions of the TLVHG when thickness of the buffer layer changes from 4mm to 11mm. It can be seen when thickness of the buffer layer increases, the central intensity of diffracted pulse decreases further. When thickness increases ...
... Figure 4(a) and 4(b) show the instantaneous diffracted intensity distributions of the TLVHG when thickness of the buffer layer changes from 4mm to 11mm. It can be seen when thickness of the buffer layer increases, the central intensity of diffracted pulse decreases further. When thickness increases ...
Encoding and Decoding Non-separable States of Polarization and Spatial Mode of Single Photons
... To reconstruct the density matrix of the state we must project in the spatial and polarization bases to determine the quantum state of the photon. This was done by performing consecutive projections, first of polarization, using three wave plates (two half and one quarter) followed by a polarizer; a ...
... To reconstruct the density matrix of the state we must project in the spatial and polarization bases to determine the quantum state of the photon. This was done by performing consecutive projections, first of polarization, using three wave plates (two half and one quarter) followed by a polarizer; a ...
Periodically Poled Lithium Niobate (PPLN) - Tutorial
... crystal. In materials, the refractive index is dependent on the frequency of light propagating through the material. In these materials, the phase relation between two photons of different frequencies will vary as the photons propagate through the crystal, unless the crystal is phase matched for tho ...
... crystal. In materials, the refractive index is dependent on the frequency of light propagating through the material. In these materials, the phase relation between two photons of different frequencies will vary as the photons propagate through the crystal, unless the crystal is phase matched for tho ...
Autofocus for Digital Fresnel Holograms by Use of a Fresnelet
... In the left column of Fig. 6 (a)–(c), we show the amplitude of the unfocused wave fields for three different samples recorded in similar conditions.8 In the center column we present the reconstructed amplitude which is properly focused, using the distance returned by the autofocus. To better underst ...
... In the left column of Fig. 6 (a)–(c), we show the amplitude of the unfocused wave fields for three different samples recorded in similar conditions.8 In the center column we present the reconstructed amplitude which is properly focused, using the distance returned by the autofocus. To better underst ...
Oxidation of some Late Transition Metal Surfaces: Structural studies
... structure determinations and the surface contribution to the measured signal is negligible. Thus in order to enable surface studies by XRD, the surface sensitivity has to be increased, which is achieved in a number of steps. First of all, the measurements are performed in parts of reciprocal space, ...
... structure determinations and the surface contribution to the measured signal is negligible. Thus in order to enable surface studies by XRD, the surface sensitivity has to be increased, which is achieved in a number of steps. First of all, the measurements are performed in parts of reciprocal space, ...
Phase-contrast X-ray imaging
Phase-contrast X-ray imaging (PCI) or phase-sensitive X-ray imaging is a general term for different technical methods that use information concerning changes in the phase of an X-ray beam that passes through an object in order to create its images. Standard X-ray imaging techniques like radiography or computed tomography (CT) rely on a decrease of the X-ray beam's intensity (attenuation) when traversing the sample, which can be measured directly with the assistance of an X-ray detector. In PCI however, the beam's phase shift caused by the sample is not measured directly, but is transformed into variations in intensity, which then can be recorded by the detector.In addition to producing projection images, PCI, like conventional transmission, can be combined with tomographic techniques to obtain the 3D distribution of the real part of the refractive index of the sample. When applied to samples that consist of atoms with low atomic number Z, PCI is more sensitive to density variations in the sample than conventional transmission-based X-ray imaging. This leads to images with improved soft tissue contrast.In the last several years, a variety of phase-contrast X-ray imaging techniques have been developed, all of which are based on the observation of interference patterns between diffracted and undiffracted waves. The most common techniques are crystal interferometry, propagation-based imaging, analyzer-based imaging, edge-illumination and grating-based imaging (see below).