PowerPoint Lecture - UCSD Department of Physics
... Raytracing made easier • In principle, to trace a ray, one must calculate the intersection of each ray with the complex lens surface, compute the surface normal here, then propagate to the next surface – computationally very cumbersome ...
... Raytracing made easier • In principle, to trace a ray, one must calculate the intersection of each ray with the complex lens surface, compute the surface normal here, then propagate to the next surface – computationally very cumbersome ...
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... Phase profiles are imprinted on the wavefront of a collimated beam from a continuous wave ytterbium-doped fiber laser (IPG Photonics, λ = 1064 nm) using an electronically addressed, reflective SLM (P512-1064, Boulder Nonlinear Systems). The SLM is operated in a phaseonly mode which controls the phas ...
... Phase profiles are imprinted on the wavefront of a collimated beam from a continuous wave ytterbium-doped fiber laser (IPG Photonics, λ = 1064 nm) using an electronically addressed, reflective SLM (P512-1064, Boulder Nonlinear Systems). The SLM is operated in a phaseonly mode which controls the phas ...
Aberration-free three-dimensional multiphoton imaging of neuronal
... Comparing this expression with Eq. 1, we see that this specific situation produces a diffraction-limited focal spot a distance z ¼ 2zM n1 ∕n2 from the nominal focal plane in the specimen. By varying zm , the position of the mirror, the focal spot is proportionally displaced to a different axial posi ...
... Comparing this expression with Eq. 1, we see that this specific situation produces a diffraction-limited focal spot a distance z ¼ 2zM n1 ∕n2 from the nominal focal plane in the specimen. By varying zm , the position of the mirror, the focal spot is proportionally displaced to a different axial posi ...
Experiments on Elastic Cloaking in Thin Plates
... The region around the cloak is also a metamaterial with a PVC filling fraction of 40%. This means that the entire plate (and not only the cloak) needs to be structured. A scheme and a photograph of the fabricated cloaking structure are shown in Fig. 2. Here, we have drilled holes and machined rings ...
... The region around the cloak is also a metamaterial with a PVC filling fraction of 40%. This means that the entire plate (and not only the cloak) needs to be structured. A scheme and a photograph of the fabricated cloaking structure are shown in Fig. 2. Here, we have drilled holes and machined rings ...
Holography: origin, basic principle and applications of a
... with this problem, (that of spherical aberration, author’s note), but could not get it out of his mind” (Mulvey, 1995). In the Easter holidays of April 1947 Gabor reported to have had, quite unexpectedly, a ‘vision’ in which “… instantaneously and without effort on my part, the complete solution of ...
... with this problem, (that of spherical aberration, author’s note), but could not get it out of his mind” (Mulvey, 1995). In the Easter holidays of April 1947 Gabor reported to have had, quite unexpectedly, a ‘vision’ in which “… instantaneously and without effort on my part, the complete solution of ...
Note
... “Every point on a primary wave front serves as the source of spherical secondary wavelets. The wavelets advance with speed and frequency equal to those of the primary wave. The primary front at some later time is the envelope of the wavelets.” a. Wave front A wave is a disturbance that propagates fr ...
... “Every point on a primary wave front serves as the source of spherical secondary wavelets. The wavelets advance with speed and frequency equal to those of the primary wave. The primary front at some later time is the envelope of the wavelets.” a. Wave front A wave is a disturbance that propagates fr ...
Propagation and refraction of chemical waves generated by local
... the system is driven away from the steady state 共u0 , v0兲 = 共a , b / a兲, which results in a limit cycle solution of the ordinary differential equations. In spatially extended systems, this may result in phase-synchronized bulk oscillation 共BO兲, periodic waves or spatiotemporal chaos. We study the ef ...
... the system is driven away from the steady state 共u0 , v0兲 = 共a , b / a兲, which results in a limit cycle solution of the ordinary differential equations. In spatially extended systems, this may result in phase-synchronized bulk oscillation 共BO兲, periodic waves or spatiotemporal chaos. We study the ef ...
Introduction: When waves encounter obstacles (or openings), they
... rays of light come to focus nearer the lens than the red rays of light because for a given material the refractive index for violet rays of light is more than for red rays of light. In the case of a zone plate, there are a number of foci between the point O and P (Figure 8). Each focus corresponds t ...
... rays of light come to focus nearer the lens than the red rays of light because for a given material the refractive index for violet rays of light is more than for red rays of light. In the case of a zone plate, there are a number of foci between the point O and P (Figure 8). Each focus corresponds t ...
Kelley model of photographic process
... dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒the concept of MTF is approximate, near the region where the system is approximately shift invariant (recall: tra ...
... dependent: typically we get more blur near the edges of the field (narrower MTF ⇔broader PSF) • This, in addition, means that real–life optical systems are not shift invariant either! • ⇒the concept of MTF is approximate, near the region where the system is approximately shift invariant (recall: tra ...
