Chapter 2 Introduction to Waveguide and Bragg Grating Theory 2.1
... 2.3 Principles of Bragg Gratings Bragg gratings play a significant role in the applications of UV written waveguides that are presented in the following chapters. In order to interpret the optical behaviour of these structures some knowledge of the underlying principles is required. Extensive review ...
... 2.3 Principles of Bragg Gratings Bragg gratings play a significant role in the applications of UV written waveguides that are presented in the following chapters. In order to interpret the optical behaviour of these structures some knowledge of the underlying principles is required. Extensive review ...
On the chromatic aberration of microlenses
... To investigate an achromatic design for a microlens we fix a diameter. Then to allow comparisons a wavelength of reference fixing Zp is required. It is now possible to plot the relative variations of this Zp against the wavelength of a defined spectrum. For example, Fig. 9 shows the variations as f ...
... To investigate an achromatic design for a microlens we fix a diameter. Then to allow comparisons a wavelength of reference fixing Zp is required. It is now possible to plot the relative variations of this Zp against the wavelength of a defined spectrum. For example, Fig. 9 shows the variations as f ...
Imaging scanning tunneling microscope
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
Rayleigh scattering. Scattering and absorption by aerosols and
... g=0 for isotropic scattering Forward scattering refers to the observations directions for which Θ < π/2: g>0 scattering in the forward direction Backward scattering refers to the observations directions for which Θ > π/2: g<0 scattering in the backward direction NOTE: Θ = 00 is often called forward ...
... g=0 for isotropic scattering Forward scattering refers to the observations directions for which Θ < π/2: g>0 scattering in the forward direction Backward scattering refers to the observations directions for which Θ > π/2: g<0 scattering in the backward direction NOTE: Θ = 00 is often called forward ...
Optics for next generation light sources Anton Barty
... focusing optics this calculation likely places an upper bound on the focusing spot properties given the predicted SOMS front-end performance. One point that is immediately apparent is that the focal spot is likely to vary in shape with energy due to the dependence of wavefront error and propagation ...
... focusing optics this calculation likely places an upper bound on the focusing spot properties given the predicted SOMS front-end performance. One point that is immediately apparent is that the focal spot is likely to vary in shape with energy due to the dependence of wavefront error and propagation ...
Laser risk document
... Level of laser radiation to which, under normal circumstances, persons may be exposed without suffering adverse effects » « IEC 60825-3 Safety for laser show - Spectator MPE: The level of laser radiation that may be present in a spectator zone should not exceed the MPE for direct ocular exposure » A ...
... Level of laser radiation to which, under normal circumstances, persons may be exposed without suffering adverse effects » « IEC 60825-3 Safety for laser show - Spectator MPE: The level of laser radiation that may be present in a spectator zone should not exceed the MPE for direct ocular exposure » A ...
Aalborg Universitet
... arly blackened metallic surfaces produced by the distillation of metals at relatively high pressures1, as well as recent blackening of metals2,3 and silicon4 caused by intense laser irradiation, suppress reflection of light through a combined effect of nano-, micro- and macro-structured surface morp ...
... arly blackened metallic surfaces produced by the distillation of metals at relatively high pressures1, as well as recent blackening of metals2,3 and silicon4 caused by intense laser irradiation, suppress reflection of light through a combined effect of nano-, micro- and macro-structured surface morp ...
Quantitative Phase Imaging
... wavevector. Thus, for such an idealized wave, the phase changes in time at a rate of ω rad/s and in space at a rate k rad/m along a direction parallel to wavevector k (i.e., when k r). The interpretation of k as a spatial frequency was emphasized by Kong (see, Kong, 2008, p. 98). Starting with the ...
... wavevector. Thus, for such an idealized wave, the phase changes in time at a rate of ω rad/s and in space at a rate k rad/m along a direction parallel to wavevector k (i.e., when k r). The interpretation of k as a spatial frequency was emphasized by Kong (see, Kong, 2008, p. 98). Starting with the ...
Scattered Light Predictions for Aluminum Painted Reflectors in
... lamp with an aluminize reflector showed excellent correlation with the actual measurements as shown in Figure 9. A correlation coefficient of 0.975 was achieved. Figure 11. Far-field light distribution comparison between the ASAP model and Photometer measurements for SHLA painted reflector ...
... lamp with an aluminize reflector showed excellent correlation with the actual measurements as shown in Figure 9. A correlation coefficient of 0.975 was achieved. Figure 11. Far-field light distribution comparison between the ASAP model and Photometer measurements for SHLA painted reflector ...
3D Finite Element Model for Writing Long
... stress-related issues regarding the processing of the optical fibers, the residual axial elastic stresses were implemented considering Equations (9) and (10) and the total resulting stress was obtained adding the thermally-induced residual stresses obtained with the program. The implemented geometry ...
... stress-related issues regarding the processing of the optical fibers, the residual axial elastic stresses were implemented considering Equations (9) and (10) and the total resulting stress was obtained adding the thermally-induced residual stresses obtained with the program. The implemented geometry ...
Inverse scattering for frequency-scanned full-field
... within a coherence length of the focal plane produce scattered fields that will interfere with the reference. By recording the interference, an image of a slice of the sample around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique i ...
... within a coherence length of the focal plane produce scattered fields that will interfere with the reference. By recording the interference, an image of a slice of the sample around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique i ...
Radar cross section lectures
... between tk-ue and apparent sizes. As measurement capabilities Improved,. investigations of the variation of RCS with these parameters provided the radar analyst with a plethora of data, but few insights into this relation. In the present context, such data are essential in determining the physical f ...
... between tk-ue and apparent sizes. As measurement capabilities Improved,. investigations of the variation of RCS with these parameters provided the radar analyst with a plethora of data, but few insights into this relation. In the present context, such data are essential in determining the physical f ...
A Non-Contact Pulse Automatic Positioning Measurement System
... 10 s. The video is then sent to a computer for analysis. The program flow chart is shown in Figure 9. The video is divided into 30 (frames) × 10 (s), for a total of 300 images. As the light source being used in this system is red light, it is necessary to resolve the R value from the image containin ...
... 10 s. The video is then sent to a computer for analysis. The program flow chart is shown in Figure 9. The video is divided into 30 (frames) × 10 (s), for a total of 300 images. As the light source being used in this system is red light, it is necessary to resolve the R value from the image containin ...
1 Fundamental Optics www.cvimellesgriot.com
... The process of solving virtually any optical engineering problem can be broken down into two main steps. First, paraxial calculations (first order) are made to determine critical parameters such as magnification, focal length(s), clear aperture (diameter), and object and image position. These paraxi ...
... The process of solving virtually any optical engineering problem can be broken down into two main steps. First, paraxial calculations (first order) are made to determine critical parameters such as magnification, focal length(s), clear aperture (diameter), and object and image position. These paraxi ...