Slide 1
... Project aims: Developing numerical programmes to model performance of small optical devices (such as being used on computer chips) ; the software will become a simulation tool for the design of actual new devices. The aims are to improve existing methods in various ways, most notably in the topics o ...
... Project aims: Developing numerical programmes to model performance of small optical devices (such as being used on computer chips) ; the software will become a simulation tool for the design of actual new devices. The aims are to improve existing methods in various ways, most notably in the topics o ...
Niyaz_Ahmad_Report
... A new class of optical materials known as transparent ferroelectric glass-ceramics [4] (TFGCs) is emerging, which could be easily formed into various shapes or drawn into fibers, which exhibit nonlinear [5] effects such as electro-optic [6], second-harmonic generation [7,8], etc. Typically, a TFGC s ...
... A new class of optical materials known as transparent ferroelectric glass-ceramics [4] (TFGCs) is emerging, which could be easily formed into various shapes or drawn into fibers, which exhibit nonlinear [5] effects such as electro-optic [6], second-harmonic generation [7,8], etc. Typically, a TFGC s ...
Daedalon EO-85 Computerized Spectrophotometer
... Finally, the popup will tell you to place the sample between source and slit – hold the didymium glass in front of the slit and click “GO” in the popup. The popup will now say “Measuring complete, do another sample” – click on “DONE” – and the absorption spectrum will be displayed on the screen. Yo ...
... Finally, the popup will tell you to place the sample between source and slit – hold the didymium glass in front of the slit and click “GO” in the popup. The popup will now say “Measuring complete, do another sample” – click on “DONE” – and the absorption spectrum will be displayed on the screen. Yo ...
fabrication, characterization and application of dispersive gradient
... Dispersive multilayer coatings today are inseparable from ultrashort systems and lasers. In this work, attention is focused on optimizing the existing characteristics or finding the new applications or designs for this specific kind of optical coatings. In this work, to our knowledge for the first t ...
... Dispersive multilayer coatings today are inseparable from ultrashort systems and lasers. In this work, attention is focused on optimizing the existing characteristics or finding the new applications or designs for this specific kind of optical coatings. In this work, to our knowledge for the first t ...
Intraocular Lenses
... e the aperture into circular “zones” (these are the concentric rings in the zone plate pictured above). The edge of each zone is /2 farther away from Po than the edge of the neighboring zone. 2. Notice that the wave that travels along the axis of the aperture experiences constructive interference ...
... e the aperture into circular “zones” (these are the concentric rings in the zone plate pictured above). The edge of each zone is /2 farther away from Po than the edge of the neighboring zone. 2. Notice that the wave that travels along the axis of the aperture experiences constructive interference ...
Integrated polymer micro-ring resonators for optical sensing
... The context of this work is to improve optical sensor sensitivity based on easily integrated micro-resonator (MR) component. We present a preliminary study on polymer integrated MR with sub-micronic ring waveguide gaps for sensing applications by taking advantage of our previous experiments on filte ...
... The context of this work is to improve optical sensor sensitivity based on easily integrated micro-resonator (MR) component. We present a preliminary study on polymer integrated MR with sub-micronic ring waveguide gaps for sensing applications by taking advantage of our previous experiments on filte ...
Baffle Design and Analysis of Stray-light in Multispectral Camera of
... system. The vane 2 is defined to the intersection of line AB with the line determining the FOV limit. The line DC shows the path of scattered light from the aperture of the first vane to the wall. The vane 3 is determined to the intersection of line AC with the FOV. Same procedure are accomplished f ...
... system. The vane 2 is defined to the intersection of line AB with the line determining the FOV limit. The line DC shows the path of scattered light from the aperture of the first vane to the wall. The vane 3 is determined to the intersection of line AC with the FOV. Same procedure are accomplished f ...
Notebook and Assignment Guidelines
... 3. When you have marked all of the points where crests in the wave pattern align, look for rows of constructive interference points. Connect each row of constructive interference points with a line, as shown in the diagram at left. These lines show the locations where crests in the two wave pattern ...
... 3. When you have marked all of the points where crests in the wave pattern align, look for rows of constructive interference points. Connect each row of constructive interference points with a line, as shown in the diagram at left. These lines show the locations where crests in the two wave pattern ...
Aberration File
... to a focus slightly before light from the centre of the lens. This is due to the fact that the surfaces of simple converging lenses are lenses are spherical. (That is they form part of the surface of a sphere) ...
... to a focus slightly before light from the centre of the lens. This is due to the fact that the surfaces of simple converging lenses are lenses are spherical. (That is they form part of the surface of a sphere) ...
Reflection and transmission of electromagnetic
... Propagation of an electromagnetic (EM) wave through a time-varying medium is an old research topic. As early as 1958, this phenomenon was investigated theoretically in the microwave region [1]. In addition to the generation of a backward-propagating wave, it was predicted that the frequency of the i ...
... Propagation of an electromagnetic (EM) wave through a time-varying medium is an old research topic. As early as 1958, this phenomenon was investigated theoretically in the microwave region [1]. In addition to the generation of a backward-propagating wave, it was predicted that the frequency of the i ...
the optical (light) microscope
... chromatic aberration for two colors (usually red and green). Therefore, achromats are not suitable for color photomicroscopy. Use of a yellow-green filter and orthochromatic film yields optimum results. However, achromats do provide a relatively long working distance, that is, the distance from the ...
... chromatic aberration for two colors (usually red and green). Therefore, achromats are not suitable for color photomicroscopy. Use of a yellow-green filter and orthochromatic film yields optimum results. However, achromats do provide a relatively long working distance, that is, the distance from the ...
V Groove Measurement with White Light Interferometer
... magnitude, when the step height is less than the coherence length of the source, and surface roughness is generally overestimated by a similar value. Other error sources exist but for the most part systematic errors in WLI are less than, or of the order of, half a wavelength. In this paper, we repor ...
... magnitude, when the step height is less than the coherence length of the source, and surface roughness is generally overestimated by a similar value. Other error sources exist but for the most part systematic errors in WLI are less than, or of the order of, half a wavelength. In this paper, we repor ...
Spectral Brightness of Synchrotron Radiation
... Kim’s definition for spectral brightness treats the electric field as a scalar but in reality it is a vector Polarization describes the way in which the direction of this vector changes Types: Linear (horizontal, vertical, ±45º), right and left circular, elliptical ...
... Kim’s definition for spectral brightness treats the electric field as a scalar but in reality it is a vector Polarization describes the way in which the direction of this vector changes Types: Linear (horizontal, vertical, ±45º), right and left circular, elliptical ...
wavelength dependence of the light-induced index
... is an )propriate for carrying out measurements in the 700- -1400-nm wavelength range. In the experiment, a UV light pulse from a Lumonics 'Series TE-260-2 excimer laser is impinged upon one arm of the dissimilar-fiber Mach-Zehnder interferoi neter. The UV light beam has a wavelength of 249 iim, a pu ...
... is an )propriate for carrying out measurements in the 700- -1400-nm wavelength range. In the experiment, a UV light pulse from a Lumonics 'Series TE-260-2 excimer laser is impinged upon one arm of the dissimilar-fiber Mach-Zehnder interferoi neter. The UV light beam has a wavelength of 249 iim, a pu ...
Waves -- Revision Guide
... Refractive index of a medium depends on the speed of wave in that medium. Selective Polarization of waves (only for transverse waves) A polarizer and an analyser are media that only allow oscillations of a certain direction to pass through. When a unpolarized wave passes through a polarizer, its int ...
... Refractive index of a medium depends on the speed of wave in that medium. Selective Polarization of waves (only for transverse waves) A polarizer and an analyser are media that only allow oscillations of a certain direction to pass through. When a unpolarized wave passes through a polarizer, its int ...
Tabletop nanometer extreme ultraviolet imaging in an
... The round-trip path difference of the reflected light is −2h cos θ, where h is the height above a reference (such as the substrate) and θ is the angle of incidence. At a 45° angle of incidence for a feature thickness of 30 nm, the round-trip path length difference between the silicon substrate and t ...
... The round-trip path difference of the reflected light is −2h cos θ, where h is the height above a reference (such as the substrate) and θ is the angle of incidence. At a 45° angle of incidence for a feature thickness of 30 nm, the round-trip path length difference between the silicon substrate and t ...
I news & views
... patterns generated by lasers with high Fresnel numbers4. A system that behaves chaotically is unpredictable, which is usually undesirable. However, several specific features of chaos have turned out to be useful for improving the performance of optical systems. For instance, the high dimensionality ...
... patterns generated by lasers with high Fresnel numbers4. A system that behaves chaotically is unpredictable, which is usually undesirable. However, several specific features of chaos have turned out to be useful for improving the performance of optical systems. For instance, the high dimensionality ...
The Fresnel Biprism
... tightly packed interference pattern and as a result, there are more fringes spaced closer together. There was some potential error in setting up the system in that the rib of the prism was meant to be at the centre of the illuminated area, this is fairly subjective as the area surrounding the rib wa ...
... tightly packed interference pattern and as a result, there are more fringes spaced closer together. There was some potential error in setting up the system in that the rib of the prism was meant to be at the centre of the illuminated area, this is fairly subjective as the area surrounding the rib wa ...
P3.7.4.5 - LD Didactic
... Optimize the alignment of the lens until the received signal U takes its maximum for a straight path of ray. Shift the E-field probe perpendicularly to the direction of the ray to the “right” and to the “left”, and look for the positions where the received signal is reduced to half the maximum value ...
... Optimize the alignment of the lens until the received signal U takes its maximum for a straight path of ray. Shift the E-field probe perpendicularly to the direction of the ray to the “right” and to the “left”, and look for the positions where the received signal is reduced to half the maximum value ...
The Phenomenon of Total Internal Reflection and Acceleration of
... the fibers works on transmitting the light universally with a high speed that exceeds all the transmission media [1] fiber optics is a tangible transmission medium that transmits data between two points by the light so it differs from other transmission media. The cable of fiber optics carries the d ...
... the fibers works on transmitting the light universally with a high speed that exceeds all the transmission media [1] fiber optics is a tangible transmission medium that transmits data between two points by the light so it differs from other transmission media. The cable of fiber optics carries the d ...
Optical Fibers in Communication
... Two types of light source are used with fibers, LEDs and Laser Diodes. LEDs can operate in the near infrared (the main wavelengths used in fibers are 1300nm and 1550nm, along with 850nm for some applications); they can emit light at 850nm and 1300nm. They also have the advantages of long lifetimes a ...
... Two types of light source are used with fibers, LEDs and Laser Diodes. LEDs can operate in the near infrared (the main wavelengths used in fibers are 1300nm and 1550nm, along with 850nm for some applications); they can emit light at 850nm and 1300nm. They also have the advantages of long lifetimes a ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.