The measurement of rough surface topography using coherence
... The purpose of this guide is to describe good practice for the measurement and characterisation of rough surface topography using coherence scanning interferometry (commonly referred to as vertical scanning white light interferometry). This guide is aimed at users of coherence scanning interferometr ...
... The purpose of this guide is to describe good practice for the measurement and characterisation of rough surface topography using coherence scanning interferometry (commonly referred to as vertical scanning white light interferometry). This guide is aimed at users of coherence scanning interferometr ...
The List of Author`s Publications
... [15], d) thermally driven mirrors [16; 17], e) static compensators [18]. However, none of the mentioned methods is considered as “standard” approach for thermal effect mitigation. Thermal effects have to be treated individually during design of every high average power and/or high output beam qualit ...
... [15], d) thermally driven mirrors [16; 17], e) static compensators [18]. However, none of the mentioned methods is considered as “standard” approach for thermal effect mitigation. Thermal effects have to be treated individually during design of every high average power and/or high output beam qualit ...
Estimation of longitudinal resolution in optical coherence
... center wavelength and bandwidth, it leads to incorrect values of coherence length obtained with either of the metrics considered. A spectral dip in a PSD introduces sidelobes in the temporal coherence function. When computing the coherence length through the first metric, we measure the FWHM of the ...
... center wavelength and bandwidth, it leads to incorrect values of coherence length obtained with either of the metrics considered. A spectral dip in a PSD introduces sidelobes in the temporal coherence function. When computing the coherence length through the first metric, we measure the FWHM of the ...
Laser and Gaussian Beam Propagation and Transformation
... same for any meridional plane containing the axis of propagation. Indeed, we did an easy calculation of the encircled energy for a circular beam by using these symmetry considerations (see Fig. 3). However, this is not the general case for a Gaussian beam.[39–41] For example, when a beam is transfor ...
... same for any meridional plane containing the axis of propagation. Indeed, we did an easy calculation of the encircled energy for a circular beam by using these symmetry considerations (see Fig. 3). However, this is not the general case for a Gaussian beam.[39–41] For example, when a beam is transfor ...
The Scintillation Index In Moderate To Strong Turbulence
... Note that both (13) and (14) do not naturally occur, but are mathematical limits used in certain scenarios instead of a Gaussian beam profile due to their simplicity. As it propagates along z, the spherical wave is approximated by [1] U 0 ( r, z ) ≅ ...
... Note that both (13) and (14) do not naturally occur, but are mathematical limits used in certain scenarios instead of a Gaussian beam profile due to their simplicity. As it propagates along z, the spherical wave is approximated by [1] U 0 ( r, z ) ≅ ...
Numerical techniques for Fresnel diffraction in computational
... dynamic monocular cue is motion parallax; the principle through which objects that are further from you appear to have less lateral movement than closer objects. This can be accomplished in 2D by the simple rotation or translation of a scene, and by properly including the parallax effect into the re ...
... dynamic monocular cue is motion parallax; the principle through which objects that are further from you appear to have less lateral movement than closer objects. This can be accomplished in 2D by the simple rotation or translation of a scene, and by properly including the parallax effect into the re ...
Multiplexed Digital Holography incorporating Speckle
... important to capture the shape in a single exposure due to movements of the objects. Singleshot multiplexed holography can be accomplished by having different incident angles of the reference light for the different wavelengths, hence separating the information in the frequency space. As the shape m ...
... important to capture the shape in a single exposure due to movements of the objects. Singleshot multiplexed holography can be accomplished by having different incident angles of the reference light for the different wavelengths, hence separating the information in the frequency space. As the shape m ...
Asymmetric surface plasmon polariton emission by a dipole emitter
... 2 t ) in V2 /m2 . The color scale is in powers of 10 to enhance visibility. (c) Left: The z component of the z = 5 nm above the interface (|E| instantaneous SPP electric field (in V/m) at z = 5 nm created by a dipole as in (a), oscillating in plane with the metal surface. Right: plot of the time ...
... 2 t ) in V2 /m2 . The color scale is in powers of 10 to enhance visibility. (c) Left: The z component of the z = 5 nm above the interface (|E| instantaneous SPP electric field (in V/m) at z = 5 nm created by a dipole as in (a), oscillating in plane with the metal surface. Right: plot of the time ...
Precision Engineering Periodic error calculation from spectrum analyzer data
... It is well known that displacement measuring interferometry offers high accuracy, range, and resolution for non-contact displacement measurement applications. One fundamental accuracy limitation for the commonly selected heterodyne (or two frequency) Michelson-type interferometer is periodic error. ...
... It is well known that displacement measuring interferometry offers high accuracy, range, and resolution for non-contact displacement measurement applications. One fundamental accuracy limitation for the commonly selected heterodyne (or two frequency) Michelson-type interferometer is periodic error. ...
Jonesresub
... Likewise, IH , IV , ID and IA the intensities in the corresponding states. In the laboratory they are obtained by passing the light through the corresponding polarization filters, described below. Similarly, using the linear basis, and its description in terms of the H − V polar axis, s1 = cos 2α = ...
... Likewise, IH , IV , ID and IA the intensities in the corresponding states. In the laboratory they are obtained by passing the light through the corresponding polarization filters, described below. Similarly, using the linear basis, and its description in terms of the H − V polar axis, s1 = cos 2α = ...
Polarization and angle dependence for hyper-Rayleigh scattering from local
... was clearly recognized at the time of the first HRS experiments.8–11 However, in the analysis of those experiments it was explicitly assumed that orientational ordering in liquids is short range. A recent study of HRS from liquid acetonitrile concludes that long-range correlations of molecular orien ...
... was clearly recognized at the time of the first HRS experiments.8–11 However, in the analysis of those experiments it was explicitly assumed that orientational ordering in liquids is short range. A recent study of HRS from liquid acetonitrile concludes that long-range correlations of molecular orien ...
Negative Refractive Index Materials
... velocity vectors may be found on the internet.5 Antiparallel phase and group velocities immediately affect Snellius’ law as illustrated in Figure 1. For positive and the ray propagates along the way 1–4 through the interface between two media. If one of the media has negative and , the ray pr ...
... velocity vectors may be found on the internet.5 Antiparallel phase and group velocities immediately affect Snellius’ law as illustrated in Figure 1. For positive and the ray propagates along the way 1–4 through the interface between two media. If one of the media has negative and , the ray pr ...
Optical aberration
An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.