High resolution, high contrast, high focal depth nonlinear beams
... several areas of laser optics among the most important, ranging from material processing to microscopy and to the development of novel coherent light sources. Conical waves are unique and peculiar wave packets, in which the energy flow is not directed along the beam axis, as in conventional waves. I ...
... several areas of laser optics among the most important, ranging from material processing to microscopy and to the development of novel coherent light sources. Conical waves are unique and peculiar wave packets, in which the energy flow is not directed along the beam axis, as in conventional waves. I ...
FILTERS AND BEAM SPLITTERS Several of the applications of
... The product t1t2 sometimes is called the "filter correction factor." For light incident normally on the filter surface, it’s given by, Equation 3 where: n = index of refraction of the filter glass (relative to air). The top curve in Figure 9 is for a filter two millimeters thick. The second curve is ...
... The product t1t2 sometimes is called the "filter correction factor." For light incident normally on the filter surface, it’s given by, Equation 3 where: n = index of refraction of the filter glass (relative to air). The top curve in Figure 9 is for a filter two millimeters thick. The second curve is ...
Switching between positive and negative
... a material under optical illumination because of the photogeneration of carriers. Illumination of photoconductive materials by a short ultra-fast optical pulse of reasonable power can produce these carriers. This process is governed by optical generation, electrical transport and recombination of ca ...
... a material under optical illumination because of the photogeneration of carriers. Illumination of photoconductive materials by a short ultra-fast optical pulse of reasonable power can produce these carriers. This process is governed by optical generation, electrical transport and recombination of ca ...
Absorption & Emission
... near 1.0 as they are “symmetry allowed”. McGarvey and Gaillard, Basic Photochemistry at ...
... near 1.0 as they are “symmetry allowed”. McGarvey and Gaillard, Basic Photochemistry at ...
Mode-Matching Analysis of Whispering-Gallery
... In the past, researchers have developed several numeric tools to meet the necessity of WGM investigation. The first step in the numeric interrogation of a WGM cavity is to develop a tool that can calculate the electro-magnetic field distribution of an unperturbed whispering gallery mode and correspond ...
... In the past, researchers have developed several numeric tools to meet the necessity of WGM investigation. The first step in the numeric interrogation of a WGM cavity is to develop a tool that can calculate the electro-magnetic field distribution of an unperturbed whispering gallery mode and correspond ...
Étendue and spectral resolution
... spectral lines emitted by ionized and neutral atoms in pulsed plasmas. This system provides a valuable diagnostic tool for measuring the pressure broadening and especially the Doppler broadening -- and shift -- for emission lines from plasma species. As the primary dispersing element is an interfero ...
... spectral lines emitted by ionized and neutral atoms in pulsed plasmas. This system provides a valuable diagnostic tool for measuring the pressure broadening and especially the Doppler broadening -- and shift -- for emission lines from plasma species. As the primary dispersing element is an interfero ...
Rejection of two-photon fluorescence background in
... the applied aberrations are therefore that they produce no defocus nor tilt to the illumination intensity. For our demonstrations, we applied voltages on the DM actuators to produce either 0 or π local phase shifts on the reflected beam. Two patterns, in particular, were investigated as shown in Fig ...
... the applied aberrations are therefore that they produce no defocus nor tilt to the illumination intensity. For our demonstrations, we applied voltages on the DM actuators to produce either 0 or π local phase shifts on the reflected beam. Two patterns, in particular, were investigated as shown in Fig ...
TIE-29: Refractive Index and Dispersion
... each casting. These samples are cooled down very fast together with a reference sample of the same glass. The reference sample has a known refractive index at an annealing rate of 2°C/h. By measuring the change in refractive index of the reference sample the refractive index of the sample can be mea ...
... each casting. These samples are cooled down very fast together with a reference sample of the same glass. The reference sample has a known refractive index at an annealing rate of 2°C/h. By measuring the change in refractive index of the reference sample the refractive index of the sample can be mea ...
b1.2. generation and propagation of higher order gaussian beams
... a confocal microscope leads to lots of spatial and temporal changes to the beam. Hence, it needs to be understood while using such higher order Gaussian beams. It has been thought that Gaussian beam propagating through an ideal thin lens or a mirror with small curvature undergoes a change in paramet ...
... a confocal microscope leads to lots of spatial and temporal changes to the beam. Hence, it needs to be understood while using such higher order Gaussian beams. It has been thought that Gaussian beam propagating through an ideal thin lens or a mirror with small curvature undergoes a change in paramet ...
Chapter 10 Class 10th
... When a stone is dropped into a pond of water, the circular ripples are produced at a place where the stone touches the water. These ripples spread towards the edges in all directions. If a piece of paper is placed at the surface of water and observe, it will start up and down motion at its own posit ...
... When a stone is dropped into a pond of water, the circular ripples are produced at a place where the stone touches the water. These ripples spread towards the edges in all directions. If a piece of paper is placed at the surface of water and observe, it will start up and down motion at its own posit ...
super-resolved fluorescence microscopy
... microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the next section. 3. Discovery of super-resolved fluorescence microscopy To date there are two far-field principles that lead to fluorescence-based microscopy with a resolution far b ...
... microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the next section. 3. Discovery of super-resolved fluorescence microscopy To date there are two far-field principles that lead to fluorescence-based microscopy with a resolution far b ...
Acoustooptic interaction of two light beams in a paratellurite crystal
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
Optical Waveguide Modes
... of waveguide fabrication have proven effective in a variety of substrate materials. The more important of these have been listed in Table 2.1 so that the reader will be familiar with the names of the techniques when they are mentioned in the following discussion of experimental observations of waveg ...
... of waveguide fabrication have proven effective in a variety of substrate materials. The more important of these have been listed in Table 2.1 so that the reader will be familiar with the names of the techniques when they are mentioned in the following discussion of experimental observations of waveg ...
Experimental study of scattering from characterized random surfaces
... detector made it possible to measure the parallel- and orthogonal-polarization components should the sample cause depolarization. A small computer controlled the arm and sample stage so that data could be taken quickly and reproducibly. There were some differences in the apparatus as set up for visi ...
... detector made it possible to measure the parallel- and orthogonal-polarization components should the sample cause depolarization. A small computer controlled the arm and sample stage so that data could be taken quickly and reproducibly. There were some differences in the apparatus as set up for visi ...
Design and use of guided mode resonance filters for
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
... Even though the principles of diffraction had been known since the time of Newton, it was Rittenhouse who in 1786, produced the first man-made diffraction grating from hairs spaced by the threads of two fine screws [1]. Years later, in 1902, Wood noticed unexpected rapid intensity variations in ligh ...
Lec03 - nptel
... fact the skew rays go on spiralling around the axis of the optical fiber. The light energy carried by them is effectively confined to an annular region around the axis as shown in figure 3.6. Consequently, at the output, skew rays will have minimum energy at the axis of the optical fiber and it will ...
... fact the skew rays go on spiralling around the axis of the optical fiber. The light energy carried by them is effectively confined to an annular region around the axis as shown in figure 3.6. Consequently, at the output, skew rays will have minimum energy at the axis of the optical fiber and it will ...
Optics and Photonics H. A. Haus
... devices. These include (a) resonant channel dropping filters (CDF) for use in wavelength division multiplexing (WDM), (b) low-loss, waveguide components for dense optical integration, and (c) mode converters for efficient coupling of these devices with optical fibers. The common feature of the devic ...
... devices. These include (a) resonant channel dropping filters (CDF) for use in wavelength division multiplexing (WDM), (b) low-loss, waveguide components for dense optical integration, and (c) mode converters for efficient coupling of these devices with optical fibers. The common feature of the devic ...
NSS-MIC 2009 Conference Record Template
... An additional feature of the photonic crystal is to collimate the light in some privileged directions, and in particular in the forward direction. As the quantum efficiency of most of the photodetectors is angular dependant with a maximum at normal incidence we intend to study PhC structures optimiz ...
... An additional feature of the photonic crystal is to collimate the light in some privileged directions, and in particular in the forward direction. As the quantum efficiency of most of the photodetectors is angular dependant with a maximum at normal incidence we intend to study PhC structures optimiz ...
Path-reversed substrate-guided- wave optical interconnects for
... Meanwhile, a lens array is always needed to couple the output optical signals of different wavelengths into a fiber array. In our proposed path-reversed substrateguided-wave optical interconnect, instead of an input holographic grating, a beveled edge is used to couple optical signals into the wave ...
... Meanwhile, a lens array is always needed to couple the output optical signals of different wavelengths into a fiber array. In our proposed path-reversed substrateguided-wave optical interconnect, instead of an input holographic grating, a beveled edge is used to couple optical signals into the wave ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.