Hybrid optoelectronic correlator architecture for shift-invariant target recognition Mehjabin Sultana Monjur, Shih Tseng,
... (Ψ1 Ψ2 ) over a range of 2π at a certain frequency ωs , while keeping (Ψ1 − Ψ2 ) zero. The convolution term varies as we scan (Ψ1 Ψ2 ), whereas the cross-correlation term remains constant (since Ψ1 − Ψ2 0). While scanning is going on, we pass the signal S through a low-pass filter (LPF) with a ...
... (Ψ1 Ψ2 ) over a range of 2π at a certain frequency ωs , while keeping (Ψ1 − Ψ2 ) zero. The convolution term varies as we scan (Ψ1 Ψ2 ), whereas the cross-correlation term remains constant (since Ψ1 − Ψ2 0). While scanning is going on, we pass the signal S through a low-pass filter (LPF) with a ...
univ. physics
... Image of a Point Object: Spherical Mirror Figure shows a spherical mirror with radius of curvature R, with its concave side facing the incident light. The center of curvature of the surface (the center of the sphere of which the surface is a part) is at C, and the vertex of the mirror (the center of ...
... Image of a Point Object: Spherical Mirror Figure shows a spherical mirror with radius of curvature R, with its concave side facing the incident light. The center of curvature of the surface (the center of the sphere of which the surface is a part) is at C, and the vertex of the mirror (the center of ...
Convex Mirrors
... We have a tendency to relate distance with size – if something is smaller than expected, one would think it is far away. If larger than expected, one would think that it is very close. a) Why are “objects in mirror closer than they appear?” b) Why are passenger side mirrors convex? ...
... We have a tendency to relate distance with size – if something is smaller than expected, one would think it is far away. If larger than expected, one would think that it is very close. a) Why are “objects in mirror closer than they appear?” b) Why are passenger side mirrors convex? ...
Tabletop nanometer extreme ultraviolet imaging in an
... eliminated for any structure of interest that is not near the edge of the scan range. Ptychography solves for the complex amplitudes of both the object and the probe (or incident beam) simultaneously [12,24]. As a result, reliable quantitative information about the object can be obtained from the re ...
... eliminated for any structure of interest that is not near the edge of the scan range. Ptychography solves for the complex amplitudes of both the object and the probe (or incident beam) simultaneously [12,24]. As a result, reliable quantitative information about the object can be obtained from the re ...
Arbitrary GRIN component fabrication in optically
... monomer and a small amount of photoinitiator. To formulate sample the material components, described in table 1, were mixed together, degassed and then cast between two millimeter thick glass slides at thicknesses ranging from 250 micrometers to two millimeters. To create high quality optical compon ...
... monomer and a small amount of photoinitiator. To formulate sample the material components, described in table 1, were mixed together, degassed and then cast between two millimeter thick glass slides at thicknesses ranging from 250 micrometers to two millimeters. To create high quality optical compon ...
Concave Mirrors
... derivation and evaluate the outcome using limiting case analysis and your knowledge of how lenses form images of objects. AB is a bright object; A1B1 is the image of the object. (M, N, and C are points on the mirror, where rays hit it.) ...
... derivation and evaluate the outcome using limiting case analysis and your knowledge of how lenses form images of objects. AB is a bright object; A1B1 is the image of the object. (M, N, and C are points on the mirror, where rays hit it.) ...
Light Sources * II The Laser
... source of noise in single mode fiber systems. • Reflection Noise: Light output gets reflected back from the fiber joints into the laser, couples with lasing modes, changing their phase, and generate noise peaks. Isolators & index matching fluids can eliminate these reflections. ...
... source of noise in single mode fiber systems. • Reflection Noise: Light output gets reflected back from the fiber joints into the laser, couples with lasing modes, changing their phase, and generate noise peaks. Isolators & index matching fluids can eliminate these reflections. ...
22-Test Talk
... actual beamwidth. A laser producing a purely fundamental mode beam, for example, has an M2 of 1.0; a laser with an M2 of 1.2 will produce a spot width 9.5% larger than theoretical. It is not surprising, then, that the parameter is widely used to characterize beam quality. What is surprising is that ...
... actual beamwidth. A laser producing a purely fundamental mode beam, for example, has an M2 of 1.0; a laser with an M2 of 1.2 will produce a spot width 9.5% larger than theoretical. It is not surprising, then, that the parameter is widely used to characterize beam quality. What is surprising is that ...
Characterizing inner-shell electron using ultrashort attosecond pulse
... We successfully observed inner-shell electron motion using isolated ultrashort attosecond (as: 10-18 second) pulses of light. It behaves as an instantaneous strobe light and can directly access the inner-shell electron with ultrashort decay time. The research on the inner shell is importance for stu ...
... We successfully observed inner-shell electron motion using isolated ultrashort attosecond (as: 10-18 second) pulses of light. It behaves as an instantaneous strobe light and can directly access the inner-shell electron with ultrashort decay time. The research on the inner shell is importance for stu ...
Diffraction and Interference
... • Thousands of tiny slits. Diffracts light. Colors are produced by interference between light beams. • So if you see red, what color is being cancelled? ...
... • Thousands of tiny slits. Diffracts light. Colors are produced by interference between light beams. • So if you see red, what color is being cancelled? ...
Lecture 12 - Lehigh University
... Fabrication of traditional optical glasses Clay pot melting, introduced by Schott in Germany, was the first method used to melt optical glass. However, the melts caused erosion of the clay, which led to striae in the final glass and they also became contaminated by iron and very fine (~ micron size ...
... Fabrication of traditional optical glasses Clay pot melting, introduced by Schott in Germany, was the first method used to melt optical glass. However, the melts caused erosion of the clay, which led to striae in the final glass and they also became contaminated by iron and very fine (~ micron size ...
Reflection and Mirrors
... understand. Read the text carefully a second time. If you still need help, write a list of questions to ask your teacher. ...
... understand. Read the text carefully a second time. If you still need help, write a list of questions to ask your teacher. ...
ETM4106Tutorial3
... coefficient of 0.286. The Boltzman constant is 1.381 10-23 JK-1 . Ans. 5.2 dB/Km, 0.8 dB/Km, 0.3 dB/Km. Q.5 A K2 O-SiO2 glass core optical fiber has an attenuation resulting from Rayleigh scattering 0.46 dB/Km at a wavelength of 1 m. The glass has an estimated fricative temperature of 758 K, isot ...
... coefficient of 0.286. The Boltzman constant is 1.381 10-23 JK-1 . Ans. 5.2 dB/Km, 0.8 dB/Km, 0.3 dB/Km. Q.5 A K2 O-SiO2 glass core optical fiber has an attenuation resulting from Rayleigh scattering 0.46 dB/Km at a wavelength of 1 m. The glass has an estimated fricative temperature of 758 K, isot ...
Title of Presentation
... By using two different materials with very different TCE arranged as either differential expansion cylinders or rods, it is possible to move the compensating element directly Rods or cylinders must be of sufficient length ...
... By using two different materials with very different TCE arranged as either differential expansion cylinders or rods, it is possible to move the compensating element directly Rods or cylinders must be of sufficient length ...
Demonstration of Optical Rotatory Dispersion of Sucrose
... mounted on a track and moved along the length of the tube in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is atta ...
... mounted on a track and moved along the length of the tube in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is atta ...
Get
... 1. Introduction There is considerable interest in the use of digital multimirror devices (DMDs) for laser-based machining, as they can offer both rapid and high-resolution fabrication [1]. For micron-scale fabrication, laser machining via DMDs is proposed as an alternative approach to existing focus ...
... 1. Introduction There is considerable interest in the use of digital multimirror devices (DMDs) for laser-based machining, as they can offer both rapid and high-resolution fabrication [1]. For micron-scale fabrication, laser machining via DMDs is proposed as an alternative approach to existing focus ...
rtf
... Imaging Theory In an electron microscope the specimen scatters the electron wave and the lenses produce the image. The two are very different processes and have to be dealt with quite separately. The reason why imaging is such an important area is that images can lie. As human beings we are conditio ...
... Imaging Theory In an electron microscope the specimen scatters the electron wave and the lenses produce the image. The two are very different processes and have to be dealt with quite separately. The reason why imaging is such an important area is that images can lie. As human beings we are conditio ...
Direct index of refraction measurement at extreme
... The absorptive part β(ω) of the refractive index at EUV wavelengths is well-tabulated by photoabsorption measurements. However, the real (dispersive) part of the refractive index δ(ω) at EUV wavelengths is less accurately known. Interferometry, which can provide independent measurements of δ and β, ...
... The absorptive part β(ω) of the refractive index at EUV wavelengths is well-tabulated by photoabsorption measurements. However, the real (dispersive) part of the refractive index δ(ω) at EUV wavelengths is less accurately known. Interferometry, which can provide independent measurements of δ and β, ...
Why The Sky Is Blue
... depend on both external and internal factors; firstly, sunlight is not uniformly intense at all wavelengths (otherwise it would be pure white before entering the atmosphere). It has a peak intensity somewhere in the green part of the visible spectrum, so the entering intensity of violet light is con ...
... depend on both external and internal factors; firstly, sunlight is not uniformly intense at all wavelengths (otherwise it would be pure white before entering the atmosphere). It has a peak intensity somewhere in the green part of the visible spectrum, so the entering intensity of violet light is con ...
laser optical disk set
... Note the very different focus points of the inner and outer rays, and that the light is only refracted at one surface (see Diagram 5.3a) Measure the focal lengths of the inner and outer rays. Now turn the lens around so that the curved surface is facing left, with the straight edge on the cent ...
... Note the very different focus points of the inner and outer rays, and that the light is only refracted at one surface (see Diagram 5.3a) Measure the focal lengths of the inner and outer rays. Now turn the lens around so that the curved surface is facing left, with the straight edge on the cent ...
Optics
... Magnification depends on the ratio of the focal lengths for the primary aperture to the eyepiece. M = focal length of objective / focal length of eyepiece = fo/fe Therefore for the same eyepiece, in general, the telescope with the longest focal length can achieve the greater magnification. ...
... Magnification depends on the ratio of the focal lengths for the primary aperture to the eyepiece. M = focal length of objective / focal length of eyepiece = fo/fe Therefore for the same eyepiece, in general, the telescope with the longest focal length can achieve the greater magnification. ...
Reflection from Plane Mirrors Law of Reflection Types of Reflection
... 1. Draw a line from F, through the tip of the object, to the mirror 2. Draw a line parallel to the optical axis from where this line hits the mirror and draw the line out past the back of the mirror. 3. Draw a line from the tip of the object straight to the mirror. 4. Draw a line from the F, thr ...
... 1. Draw a line from F, through the tip of the object, to the mirror 2. Draw a line parallel to the optical axis from where this line hits the mirror and draw the line out past the back of the mirror. 3. Draw a line from the tip of the object straight to the mirror. 4. Draw a line from the F, thr ...