Focal shift of silicon microlen array in mid
... of MLAs along optical axis, by doing this we set the front focal plane of objective at the surface of the silicon MLAs. This focal plane can be confirmed when a clear image of the surface structure, i.e., the concentric circles making up the array were observed by the camera. As is known, it is diff ...
... of MLAs along optical axis, by doing this we set the front focal plane of objective at the surface of the silicon MLAs. This focal plane can be confirmed when a clear image of the surface structure, i.e., the concentric circles making up the array were observed by the camera. As is known, it is diff ...
POLITECNICO DI MILANO Polo Regionale di Lecco Faculty of
... Once the state of the art portion of this work reviews the theoretical background and literature, focus is given to specific aim of this work on experimental set up and design in chapter 3. The first part of the experimental work of this thesis is dedicated to investigate the response behaviour of p ...
... Once the state of the art portion of this work reviews the theoretical background and literature, focus is given to specific aim of this work on experimental set up and design in chapter 3. The first part of the experimental work of this thesis is dedicated to investigate the response behaviour of p ...
Limits of lithography - Proceedings of the IEEE
... of the gates and can, in principle, achieve linewidths as small as half that achieved using conventional masks. The “trim” mask is created using software that compares the gate-level pattern with that of the underlying thinox layer to isolate the gate features in the pattern data. The PSM pattern is ...
... of the gates and can, in principle, achieve linewidths as small as half that achieved using conventional masks. The “trim” mask is created using software that compares the gate-level pattern with that of the underlying thinox layer to isolate the gate features in the pattern data. The PSM pattern is ...
Syllabus Advanced Level and Advanced Subsidiary Level
... material together with section 11, Applications of Chemistry. The Applications of Chemistry section represents about 12% of the full Advanced Level course or 23% of the A2 course. Candidates can take the course either as an AS Level, A Level or staged assessment to A Level. It is intended that candi ...
... material together with section 11, Applications of Chemistry. The Applications of Chemistry section represents about 12% of the full Advanced Level course or 23% of the A2 course. Candidates can take the course either as an AS Level, A Level or staged assessment to A Level. It is intended that candi ...
optical properties of biaxial minerals
... convergent polarized light, high power objective and analyser and Bertrand Lens are inposition, to obtain the optic figure (FIG. 7.13). In these sections optic figure has two different positions. At 90° position (FIG. 7.14) there is a black cross like that of uniaxial minerals, but in biaxial minera ...
... convergent polarized light, high power objective and analyser and Bertrand Lens are inposition, to obtain the optic figure (FIG. 7.13). In these sections optic figure has two different positions. At 90° position (FIG. 7.14) there is a black cross like that of uniaxial minerals, but in biaxial minera ...
Elastic stretchable optical fibers
... approaches. Optical fibers consist of a core and a cladding where the core has a higher refractive index than the cladding. This allows for light guiding based on total internal reflection, thereby transmitting optical signals through the fiber with very low losses. These traditional fibers are typi ...
... approaches. Optical fibers consist of a core and a cladding where the core has a higher refractive index than the cladding. This allows for light guiding based on total internal reflection, thereby transmitting optical signals through the fiber with very low losses. These traditional fibers are typi ...
Orbital angular momentum: origins
... even form complicated topological features like loops and knots as shown in Fig. 4 [33,34]. Despite all of these examples, however, prior to Allen et al. in 1992 [1], none of this early work on naturally occurring or engineered optical vortices recognized that such features could give rise to an ang ...
... even form complicated topological features like loops and knots as shown in Fig. 4 [33,34]. Despite all of these examples, however, prior to Allen et al. in 1992 [1], none of this early work on naturally occurring or engineered optical vortices recognized that such features could give rise to an ang ...
Coherent manipulation of the internal state of an atomic gas
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
The Graduate School Eberly College of Science
... L1 drive the atom from the ground state to a virtually excited intermediate state i. Laser L2 then drives the atom from state i back to the desired excited state. It is important to note that the population in state i is virtual, and losses due to spontaneous emission are not allowed. By employing t ...
... L1 drive the atom from the ground state to a virtually excited intermediate state i. Laser L2 then drives the atom from state i back to the desired excited state. It is important to note that the population in state i is virtual, and losses due to spontaneous emission are not allowed. By employing t ...
Novel Heterostructure Metal-Semiconductor-Metal
... SWE as a function of wavelength for four different active layer thicknesses: L2a=1175 Å (solid), L2b=2306 Å (dash), L2c=3438 Å (dot), L2d=4569 Å (dash dot) for a cavity with R2=1, ψ2=-π, and the material refractive index will not change with the wavelength. (a) in wavelength spectrum; (b) in frequen ...
... SWE as a function of wavelength for four different active layer thicknesses: L2a=1175 Å (solid), L2b=2306 Å (dash), L2c=3438 Å (dot), L2d=4569 Å (dash dot) for a cavity with R2=1, ψ2=-π, and the material refractive index will not change with the wavelength. (a) in wavelength spectrum; (b) in frequen ...
Waveguide Dispersion
... Rayleigh scattering involves the polarization of a small dielectric particle or a region that is much smaller than the light wavelength. The field forces dipole oscillations in the particle (by polarizing it) which leads to the emission of EM waves in "many" directions so that a portion of the light ...
... Rayleigh scattering involves the polarization of a small dielectric particle or a region that is much smaller than the light wavelength. The field forces dipole oscillations in the particle (by polarizing it) which leads to the emission of EM waves in "many" directions so that a portion of the light ...
Inducing and Controlling Particle Motion in an Optical Trap
... As outlined previously, optical trapping has been shown to be an effective tool for controlling micro- and nanoscale particles [22]. Stable three dimensional optical trapping of individual microscale plasmonic Janus particles, however, has been challenging for most geometries. This is due to strong ...
... As outlined previously, optical trapping has been shown to be an effective tool for controlling micro- and nanoscale particles [22]. Stable three dimensional optical trapping of individual microscale plasmonic Janus particles, however, has been challenging for most geometries. This is due to strong ...
SOIL PENETROMETER WITH RAMAN SAMPLING
... 5.17 Spectra of bandpass and long-pass filter used for short UV fluorescence excitation. The left spectrum is on a 5nm per division scale, while the right spectrum in on a 10 nm per division scale............................................................... 87 5.18 MATLAB color processed image of ...
... 5.17 Spectra of bandpass and long-pass filter used for short UV fluorescence excitation. The left spectrum is on a 5nm per division scale, while the right spectrum in on a 10 nm per division scale............................................................... 87 5.18 MATLAB color processed image of ...
Ans: Optical Fiber Communication System
... over longer distances and at higher bandwidths (data rates) than wire cables. Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. Fibers are also used for illumination, and are wrapped in bundles so that they ma ...
... over longer distances and at higher bandwidths (data rates) than wire cables. Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. Fibers are also used for illumination, and are wrapped in bundles so that they ma ...
pdf file
... We set it as a constant independent of frequency for simplicity of calculations. Since this value approximately corresponds to the maximum absorption coefficient in the frequency region below 2.5 THz, it may be an overestimate. The strong absorption in the phonon resonance region around 5.3 THz was ...
... We set it as a constant independent of frequency for simplicity of calculations. Since this value approximately corresponds to the maximum absorption coefficient in the frequency region below 2.5 THz, it may be an overestimate. The strong absorption in the phonon resonance region around 5.3 THz was ...
Plasmonic Metamaterials
... thickness of Si3N4 is 50 nm. (B) Left column: Scanning electron micrograph image of the fabricated device at the output side. Central and right columns: optical microscope image for illumination at 0 = 685 nm and 514 nm, showing positive refraction and negative refraction of SPPs, respectively. (C) ...
... thickness of Si3N4 is 50 nm. (B) Left column: Scanning electron micrograph image of the fabricated device at the output side. Central and right columns: optical microscope image for illumination at 0 = 685 nm and 514 nm, showing positive refraction and negative refraction of SPPs, respectively. (C) ...
Holographic 3-D Displays - Electro-holography within
... Holography was invented by Dennis Gabor in 1947 (Gabor, 1948), but high-quality holograms could only be made on photographic film, which for technical reasons preclude animation. By this classic holography, the 3-D scene information is encoded in the entire hologram, i.e. every tiny region or pixel ...
... Holography was invented by Dennis Gabor in 1947 (Gabor, 1948), but high-quality holograms could only be made on photographic film, which for technical reasons preclude animation. By this classic holography, the 3-D scene information is encoded in the entire hologram, i.e. every tiny region or pixel ...
Few-cycle terahertz generation and spectroscopy of nanostructures
... InAs were subjected to a static magnetic field (Sarakura et al . 1998; Liu et al . 2000), but the maximum average THz power generated by these emitters was just 0.8 µW. Alternatively, photoconducting antenna emitters have been demonstrated to be very powerful THz generators (Cai et al . 1997) and the ...
... InAs were subjected to a static magnetic field (Sarakura et al . 1998; Liu et al . 2000), but the maximum average THz power generated by these emitters was just 0.8 µW. Alternatively, photoconducting antenna emitters have been demonstrated to be very powerful THz generators (Cai et al . 1997) and the ...
3D optical data storage
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120mm). Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.No commercial product based on 3D optical data storage has yet arrived on the mass market, although several companies are actively developing the technology and claim that it may become available ""soon"".