Diffraction Grating Handbook
... composition of and processes in stars and planetary atmospheres, as well as offer clues to the large-scale motions of objects in the universe. In chemistry, toxicology and forensic science, grating-based instruments are used to determine the presence and concentration of chemical species in samples. ...
... composition of and processes in stars and planetary atmospheres, as well as offer clues to the large-scale motions of objects in the universe. In chemistry, toxicology and forensic science, grating-based instruments are used to determine the presence and concentration of chemical species in samples. ...
Nd:YAG Based Laser Sources for Targeting
... Porro prism resonator is investigated. This perturbation insensitive resonator design is used in laser systems operating over the full military environment of vibration and temperature. A number of aspects of the design are computer modelled with experimental verification, such as the effects of the ...
... Porro prism resonator is investigated. This perturbation insensitive resonator design is used in laser systems operating over the full military environment of vibration and temperature. A number of aspects of the design are computer modelled with experimental verification, such as the effects of the ...
universitas indonesia characterization and design of gallium nitride
... Realisation of ohmic contact by RF sputtering .................................. An Ohmic Contact of GaN/Si ............................................................. (a) Application of voltage into GaN film and direction of electric field, (b) photo of sample position in the prism coupling ..... ...
... Realisation of ohmic contact by RF sputtering .................................. An Ohmic Contact of GaN/Si ............................................................. (a) Application of voltage into GaN film and direction of electric field, (b) photo of sample position in the prism coupling ..... ...
OPTICAL ISOMERISM
... POLARIMETERS can be used to analyse the effect optical isomers have on plane polarised light: ...
... POLARIMETERS can be used to analyse the effect optical isomers have on plane polarised light: ...
Raman microscopy in an electron microscope: combining chemical
... the emissive mode, it is possible to observe topographic contrast. Any factor, which causes the secondary electron signal to vary, as the beam scans from point-to-point, is said to be generating contrast and so is capable of being imaged. Contrast can be caused either by a change in the number of se ...
... the emissive mode, it is possible to observe topographic contrast. Any factor, which causes the secondary electron signal to vary, as the beam scans from point-to-point, is said to be generating contrast and so is capable of being imaged. Contrast can be caused either by a change in the number of se ...
Principles of Fiber Optic Communication
... signal.) This modulated wave is then transmitted to the receiver through a channel and the receiver demodulates it to retrieve the imprinted signal. The carrier frequencies associated with TV broadcast (∼ 50–900 MHz) are much higher than those associated with AM radio broadcast (∼ 600 kHz–20 MHz). T ...
... signal.) This modulated wave is then transmitted to the receiver through a channel and the receiver demodulates it to retrieve the imprinted signal. The carrier frequencies associated with TV broadcast (∼ 50–900 MHz) are much higher than those associated with AM radio broadcast (∼ 600 kHz–20 MHz). T ...
optical guided waves and devices - Workspace
... A further type of optical fibre, known as multi-mode fibre, also exists. This has a similar cylindrical geometry, but a much larger core diameter (typically 50 - 100 µm). It can be formed from either glass or plastic. However, as the name implies, multimode fibre can support more than one characteri ...
... A further type of optical fibre, known as multi-mode fibre, also exists. This has a similar cylindrical geometry, but a much larger core diameter (typically 50 - 100 µm). It can be formed from either glass or plastic. However, as the name implies, multimode fibre can support more than one characteri ...
1 - Foundation for Research and Technology
... metamaterial with direct laser writing (DLW). DLW can be viewed as a 3D analogue of electronbeam lithography. Fabrication of polymer structures by this approach is standard. Infilling or coating of such polymer structures with metals is not standard at all. We have pursued chemical vapor deposition ...
... metamaterial with direct laser writing (DLW). DLW can be viewed as a 3D analogue of electronbeam lithography. Fabrication of polymer structures by this approach is standard. Infilling or coating of such polymer structures with metals is not standard at all. We have pursued chemical vapor deposition ...
Raman Spectroscopy on Semiconductor Nanowires
... GaAs. The axis correspond to the crystallographic directions: x=(0-11), y=(211) and z=(-111). (b) Theoretical azimuthal dependence of the TO mode of a bulk GaAs (0-11), as in (a). Continuous and dashed lines represent the components along the [-111] and [211] of the Raman signal, respectively. (c) M ...
... GaAs. The axis correspond to the crystallographic directions: x=(0-11), y=(211) and z=(-111). (b) Theoretical azimuthal dependence of the TO mode of a bulk GaAs (0-11), as in (a). Continuous and dashed lines represent the components along the [-111] and [211] of the Raman signal, respectively. (c) M ...
Optical grating coupler biosensor and biomedical applications Lorena Diéguez Moure
... biosensors, and among them the grating coupler. As a technique for investigating processes at the solid/liquid interface, presents high mechanical stability, immunity to electromagnetic interferences and pushes the sensitivity to levels even higher than other techniques and allows for the direct mon ...
... biosensors, and among them the grating coupler. As a technique for investigating processes at the solid/liquid interface, presents high mechanical stability, immunity to electromagnetic interferences and pushes the sensitivity to levels even higher than other techniques and allows for the direct mon ...
`Singular Optics`, International Journal of Optics, Vol.2012
... for call for papers and the various subsequent processes involved. We have received quite a number of submissions, and after peer-review process 11 articles were selected for this special issue. Optical vortex also known as optical phase singularity is a point phase defect at which the phase is inde ...
... for call for papers and the various subsequent processes involved. We have received quite a number of submissions, and after peer-review process 11 articles were selected for this special issue. Optical vortex also known as optical phase singularity is a point phase defect at which the phase is inde ...
Hasan, Ahmed and Mohiuddin
... Some polar liquids, such as nitro toluene (C7H7NO2) and nitrobenzene (C6H5NO2) exhibit very large Kerr constants. A glass cell filled with one of these liquids is called a Kerr cell. These are frequently used to modulate light, since the Kerr effect responds very quickly to changes in electric field ...
... Some polar liquids, such as nitro toluene (C7H7NO2) and nitrobenzene (C6H5NO2) exhibit very large Kerr constants. A glass cell filled with one of these liquids is called a Kerr cell. These are frequently used to modulate light, since the Kerr effect responds very quickly to changes in electric field ...
Hyper-Raman scattering and the selection rules for the wave vector
... component xxxXx differs from zero, i.e., the excited vibrations are polarized along the x axis (E, Ilx) Since the wave vector k, of the excited vibration lies in theyz plane (Fig. la), in this case E, lk,, and consequently, only TO modes can appear in the HRS spectra. B. E, 1l.z and Ei Ilx. The zero ...
... component xxxXx differs from zero, i.e., the excited vibrations are polarized along the x axis (E, Ilx) Since the wave vector k, of the excited vibration lies in theyz plane (Fig. la), in this case E, lk,, and consequently, only TO modes can appear in the HRS spectra. B. E, 1l.z and Ei Ilx. The zero ...
IOSR Journal of Applied Physics (IOSR-JAP)
... matrix. λo and So values were obtained from the slope and intercept of (n2- 1)-1 versus λ-2 curves. From table (2) it is noticed that So and λo are increase with increasing ZnO concentration. The obtained data of refractive index n can be further analyzed to obtain the high frequency dielectric cons ...
... matrix. λo and So values were obtained from the slope and intercept of (n2- 1)-1 versus λ-2 curves. From table (2) it is noticed that So and λo are increase with increasing ZnO concentration. The obtained data of refractive index n can be further analyzed to obtain the high frequency dielectric cons ...
SR Beamlines in the VUV
... Fermat’s principle: the pathlength of an actual ray traveling from a point A to a point B takes an extremal or stationary value. dF=0, where F is the pathlength from A to B. F: light path function The red ray meets the grating at a point P(,w,l) on the nth groove, the zeroth groove being assumed to ...
... Fermat’s principle: the pathlength of an actual ray traveling from a point A to a point B takes an extremal or stationary value. dF=0, where F is the pathlength from A to B. F: light path function The red ray meets the grating at a point P(,w,l) on the nth groove, the zeroth groove being assumed to ...
plasmonics: fundamentals and applications
... high-resolution microscopy, drug design and many more. Applications are indeed strong motivators, but I think there is more to it than that. I know I am biased, but for me and I suspect many others it’s the adventure, the role of the imagination, the wish to be the one to find something new, to expl ...
... high-resolution microscopy, drug design and many more. Applications are indeed strong motivators, but I think there is more to it than that. I know I am biased, but for me and I suspect many others it’s the adventure, the role of the imagination, the wish to be the one to find something new, to expl ...
Optical aberration
.svg?width=300)
An optical aberration is a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements.Aberration leads to blurring of the image produced by an image-forming optical system. Makers of optical instruments need to correct optical systems to compensate for aberration.The articles on reflection, refraction and caustics discuss the general features of reflected and refracted rays.