High spatial resolution performance of a triple Fabry–Pérot filtergraph
... variation in transmission across the pupil for monochromatic light which depends on the numerical aperture F of the beams at the intermediate image plane. This effect also broadens the transmission profile of the filtergraph and shifts the central wavelength slightly towards the blue by a factor of ...
... variation in transmission across the pupil for monochromatic light which depends on the numerical aperture F of the beams at the intermediate image plane. This effect also broadens the transmission profile of the filtergraph and shifts the central wavelength slightly towards the blue by a factor of ...
INTRODUCTION TO AO MODULATORS AND DEFLECTORS
... This leads to chromatic cross talk between neighboring wavelengths. Test data was plotted showing the level of cross talk for each operating wavelength typically available out of an Ar+/Kr laser. Even though the 48062-2.5-.55 has a worse case cross talk of 10%, it is in the red wavelengths that are ...
... This leads to chromatic cross talk between neighboring wavelengths. Test data was plotted showing the level of cross talk for each operating wavelength typically available out of an Ar+/Kr laser. Even though the 48062-2.5-.55 has a worse case cross talk of 10%, it is in the red wavelengths that are ...
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 ...
A Brief History of the Microscope and its Significance
... difference between any two points is constant with time. Examples of spatially coherent light sources are lasers and arc lamps with a small aperture that acts as a spatial filter. There is another important term: temporal coherence. A laser with a single frequency (actually a very narrow range of fr ...
... difference between any two points is constant with time. Examples of spatially coherent light sources are lasers and arc lamps with a small aperture that acts as a spatial filter. There is another important term: temporal coherence. A laser with a single frequency (actually a very narrow range of fr ...
2.7 Optical Fiber Attenuation
... ▪ caused in inhomogeneities which are comparable in size to the guided wavelength. ▪ These result from the non-perfect cylindrical structure of the waveguide and may be caused by fiber imperfections such as irregularities in the core-cladding interface, core-cladding refractive index differences alo ...
... ▪ caused in inhomogeneities which are comparable in size to the guided wavelength. ▪ These result from the non-perfect cylindrical structure of the waveguide and may be caused by fiber imperfections such as irregularities in the core-cladding interface, core-cladding refractive index differences alo ...
Technology for a better society
... Has the same effect but is a property of the lens itself, and so may be either more or less restricting than A(u). The aberration function B(u): Is usually expressed as ...
... Has the same effect but is a property of the lens itself, and so may be either more or less restricting than A(u). The aberration function B(u): Is usually expressed as ...
3D differential interference contrast microscopy using synthetic
... A set of complex field images obtained at various angles of illumination is synthesized to increase the numerical aperture of the illumination. For illumination parallel to the optical axis of an objective lens, which is defined as illumination angle equal to zero, the phase image has a uniform back ...
... A set of complex field images obtained at various angles of illumination is synthesized to increase the numerical aperture of the illumination. For illumination parallel to the optical axis of an objective lens, which is defined as illumination angle equal to zero, the phase image has a uniform back ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... form of attenuation and turbulent channel. The atmospheric attenuation is mainly caused by scattering. The atmospheric attenuation affects the overall quality of the system. In this paper the effects of scattering on the terrestrial FSO which have a link length of 2 km, is simulated using OptiSystem ...
... form of attenuation and turbulent channel. The atmospheric attenuation is mainly caused by scattering. The atmospheric attenuation affects the overall quality of the system. In this paper the effects of scattering on the terrestrial FSO which have a link length of 2 km, is simulated using OptiSystem ...
Yellow nanosecond sum-frequency generating optical
... containing two different poling periods. We furthermore present observations of secondary optical parametric oscillators pumped by the circulating signal wave and the generated yellow light. 2. Experimental setup The experimental setup is shown in figure 1. It consists of a diode-pumped Q-switched Y ...
... containing two different poling periods. We furthermore present observations of secondary optical parametric oscillators pumped by the circulating signal wave and the generated yellow light. 2. Experimental setup The experimental setup is shown in figure 1. It consists of a diode-pumped Q-switched Y ...
TEM - UiO
... aperture is inserted into the back focal plane of the objective lens, the same plane at which the diffraction pattern is formed. The aperture allows only the direct beam to pass. The scattered electrons are blocked. Dark regions are strongly dispersing the light. This is the most common imaging tech ...
... aperture is inserted into the back focal plane of the objective lens, the same plane at which the diffraction pattern is formed. The aperture allows only the direct beam to pass. The scattered electrons are blocked. Dark regions are strongly dispersing the light. This is the most common imaging tech ...
Basic Laboratory Materials Science and Engineering Scanning Electron Microscopy
... The most widely used detector of secondary electrons is the Everhart-Thornley-Detector (Fig. 13). A driving potential of e.g. +300 to 400 V is applied between the specimen and the collector for the intake of secondary electrons of low energy. Between collector and scintillator, high voltage of 10 kV ...
... The most widely used detector of secondary electrons is the Everhart-Thornley-Detector (Fig. 13). A driving potential of e.g. +300 to 400 V is applied between the specimen and the collector for the intake of secondary electrons of low energy. Between collector and scintillator, high voltage of 10 kV ...
Résumé
... the imaging system and therefore the resolution. Several ways to overcome these problems have been proposed; two main methods aiming at keeping a good optical resolution are actively developed. The first one uses pre-compensation of the wavefront before propagation, to improve the resolution. This t ...
... the imaging system and therefore the resolution. Several ways to overcome these problems have been proposed; two main methods aiming at keeping a good optical resolution are actively developed. The first one uses pre-compensation of the wavefront before propagation, to improve the resolution. This t ...
Microscope Project for Undergraduate Laboratories Abstract
... are given to serve as examples and not to specifically endorse a particular vendor. Because the parts are durable and basic, recycled or even 3D printed parts could be used.5,6 In this section, we justify some of the choices we made for components. The optical breadboard with 1/4”-20 tapped holes i ...
... are given to serve as examples and not to specifically endorse a particular vendor. Because the parts are durable and basic, recycled or even 3D printed parts could be used.5,6 In this section, we justify some of the choices we made for components. The optical breadboard with 1/4”-20 tapped holes i ...
Linköping University Post Print Optical properties of carbon nanofiber photonic crystals
... The results reported here demonstrate that it is possible to map out large regions of the band structure of the CNF-PC using ellipsometry. The measurements are in good agreement with finite-difference time domain [5] band structure calculations using a refractive index of nCN F = 4.1 for the CNF. It ...
... The results reported here demonstrate that it is possible to map out large regions of the band structure of the CNF-PC using ellipsometry. The measurements are in good agreement with finite-difference time domain [5] band structure calculations using a refractive index of nCN F = 4.1 for the CNF. It ...
lensed fiber
... WT&T is offering great flexibility in lensed fiber assemblies design options. Many parameters, including lens or fiber type, fiber length, protection, termination , operating temperatures etc can be specified to ensure good system performance. Our company will process small or medium size orders in ...
... WT&T is offering great flexibility in lensed fiber assemblies design options. Many parameters, including lens or fiber type, fiber length, protection, termination , operating temperatures etc can be specified to ensure good system performance. Our company will process small or medium size orders in ...
Photonic Devices I Purpose of the Lab
... As soon as they cross most holes and electrons will re-combine and eliminate each other. When this happens the free electrons may lose a quantum of energy to fill the available hole. This quantum of energy is radiated as electromagnetic energy with the wavelength depending on the size of the energy ...
... As soon as they cross most holes and electrons will re-combine and eliminate each other. When this happens the free electrons may lose a quantum of energy to fill the available hole. This quantum of energy is radiated as electromagnetic energy with the wavelength depending on the size of the energy ...
Electromagnetic Radiation (EMR) and Remote Sensing
... • EMR is a dynamic form of energy. EMR transmit cross space in the wave form and in the speed of light. • The whole range of EMR is called spectrum. • EMR is characterized by wavelength and frequency. Different wavelengths or frequencies indicates different portion of EMR. • EMR interact with atmosp ...
... • EMR is a dynamic form of energy. EMR transmit cross space in the wave form and in the speed of light. • The whole range of EMR is called spectrum. • EMR is characterized by wavelength and frequency. Different wavelengths or frequencies indicates different portion of EMR. • EMR interact with atmosp ...
Digital Fourier Microscopy for Soft Matter Dynamics
... It is worth concluding this Introduction by mentioning that DFM is not the only approach that exploits imaging to characterise soft matter samples. Indeed, in the last few years other nonFourier methods have been proposed, such as for instance Photon Correlation Imaging [36] or Echo Speckle Imaging ...
... It is worth concluding this Introduction by mentioning that DFM is not the only approach that exploits imaging to characterise soft matter samples. Indeed, in the last few years other nonFourier methods have been proposed, such as for instance Photon Correlation Imaging [36] or Echo Speckle Imaging ...
White-light diffraction tomography of unlabelled live cells
... generates a scattering pattern that carries specific information about its internal structure. Inferring this information from measurements of the scattered field, that is, solving the inverse scattering problem, is the fundamental principle that has allowed X-ray diffraction measurements to reveal th ...
... generates a scattering pattern that carries specific information about its internal structure. Inferring this information from measurements of the scattered field, that is, solving the inverse scattering problem, is the fundamental principle that has allowed X-ray diffraction measurements to reveal th ...
PT symmetry in optics
... Figure 3: PT symmetric Bragg scatterer. The wave entering from the left (upper figure) goes through the structure unaffected, while a wave entering the same structure from the right (lower figure) experiences enhanced reflection. Passive gratings (involving no gain or loss) can act as high efficienc ...
... Figure 3: PT symmetric Bragg scatterer. The wave entering from the left (upper figure) goes through the structure unaffected, while a wave entering the same structure from the right (lower figure) experiences enhanced reflection. Passive gratings (involving no gain or loss) can act as high efficienc ...
A Laser Module for 100Gbps Digital Coherent Optical Transmission System
... DFB LD cavity that has a length of 1.2 mm, and also optimally designed the shape of the waveguide of the SOA. Figure 4 shows the dependency of the output power of the optical fiber to which the light emitted from the front side is connected on the SOA current. Measurement was carried out when the te ...
... DFB LD cavity that has a length of 1.2 mm, and also optimally designed the shape of the waveguide of the SOA. Figure 4 shows the dependency of the output power of the optical fiber to which the light emitted from the front side is connected on the SOA current. Measurement was carried out when the te ...
Deep subwavelength nanolithography using localized surface plasmon modes on
... resolution can be improved by using either shorter wavelengths or higher numerical apertures. Although the semiconductor industry has made significant progress in increasing the lithography resolution in the past decades, further improvement of the resolution by accessing shorter wavelengths is faci ...
... resolution can be improved by using either shorter wavelengths or higher numerical apertures. Although the semiconductor industry has made significant progress in increasing the lithography resolution in the past decades, further improvement of the resolution by accessing shorter wavelengths is faci ...
NONLINEAR SCATTERING EFFECTS IN OPTICAL FIBERS
... over long distances [17, 18]. Whenever there is change in temperature or strain, the refractive index of silica changes in response to such variations. This change produces change in Brillouin shift. By registering the change in Brillouin shift the distribution of temperature and strain over long di ...
... over long distances [17, 18]. Whenever there is change in temperature or strain, the refractive index of silica changes in response to such variations. This change produces change in Brillouin shift. By registering the change in Brillouin shift the distribution of temperature and strain over long di ...
Doppler-Free Spectroscopy MIT Department of Physics
... a tunable monochromatic source (such as certain lasers), a spectrum can be measured ’one wavelength at a time’ by measuring light intensity (fluorescence or transmission) as a function of the wavelength of the tunable source. In either case, physically important structures in such spectra are often ...
... a tunable monochromatic source (such as certain lasers), a spectrum can be measured ’one wavelength at a time’ by measuring light intensity (fluorescence or transmission) as a function of the wavelength of the tunable source. In either case, physically important structures in such spectra are often ...
as a PDF
... The blue-wing hump was more than 10% to 30% larger than the red-wing hump. This asymmetry feature has also been observed by Snyder and Bentley [7,8]. An example of such a Thomson scattering line profile is shown in figure 4. Although the integrated scattered light intensity is stronger in the blue w ...
... The blue-wing hump was more than 10% to 30% larger than the red-wing hump. This asymmetry feature has also been observed by Snyder and Bentley [7,8]. An example of such a Thomson scattering line profile is shown in figure 4. Although the integrated scattered light intensity is stronger in the blue w ...