Optical Fiber Amplifiers
... In fiber optic systems amplification of the signal is necessary because no fiber material is absolutely transparent. This causes the infrared light (usually around 1530nm) carried by a fiber to be attenuated as it travels through the material. Because of this attenuation, repeaters must be used in s ...
... In fiber optic systems amplification of the signal is necessary because no fiber material is absolutely transparent. This causes the infrared light (usually around 1530nm) carried by a fiber to be attenuated as it travels through the material. Because of this attenuation, repeaters must be used in s ...
Chapter 33 . Aberration Curves in Lens Design
... remain a straight line in any evaluation plane.1 When plotted this way, the curves are called H -tan U curves. Shifting the stop of an optical system has no effect on the on-axis curves. However, it causes the origin of the meridional curves of off-axis points to be shifted along the curve. In Fig. ...
... remain a straight line in any evaluation plane.1 When plotted this way, the curves are called H -tan U curves. Shifting the stop of an optical system has no effect on the on-axis curves. However, it causes the origin of the meridional curves of off-axis points to be shifted along the curve. In Fig. ...
Ultrahigh Precision Absolute and Relative Rotation Sensing using
... frequency, λo the vacuum wavelength of the wave and β is the boost parameter, assumed to be much less than unity for typical rotations. The form of time delay in eqn. 2 due to Sagnac effect attests to the universal fact that the time delay is simply a geometric effect, attributable to relativistic t ...
... frequency, λo the vacuum wavelength of the wave and β is the boost parameter, assumed to be much less than unity for typical rotations. The form of time delay in eqn. 2 due to Sagnac effect attests to the universal fact that the time delay is simply a geometric effect, attributable to relativistic t ...
Introduction - BYU Physics and Astronomy
... The Ru was deposited via RF magnetron sputtering using a US Inc. Mighty Mak 4-inch gun. We used a Plasmatherm 3KW RF power supply. The incident power was set to 400 W and there was 10 W of reflected power once the plasma lit. The deposition of the Ru films occurred in a high vacuum chamber. The base ...
... The Ru was deposited via RF magnetron sputtering using a US Inc. Mighty Mak 4-inch gun. We used a Plasmatherm 3KW RF power supply. The incident power was set to 400 W and there was 10 W of reflected power once the plasma lit. The deposition of the Ru films occurred in a high vacuum chamber. The base ...
CARMENES in SPIE 2014. Building a fiber link for CARMENES
... for the near infrared range from 950 nm to 1700 nm (NIR). The main scientific goal of CARMENES is to look for planets within the habitable zones of 300 low-mass stars. The advantage of CARMENES is that visual as well as near infrared spectra can be taken at the same time, which helps to distinguish ...
... for the near infrared range from 950 nm to 1700 nm (NIR). The main scientific goal of CARMENES is to look for planets within the habitable zones of 300 low-mass stars. The advantage of CARMENES is that visual as well as near infrared spectra can be taken at the same time, which helps to distinguish ...
Dynamic lighting system for specular surface inspection
... revealing of aspect defects is effective. This system provides very contrasted images where defect segmentation is elementary. The real time inspection is then possible. A method to perform size correction, based on the knowledge of the local orientation of the surface to be controlled, has been pro ...
... revealing of aspect defects is effective. This system provides very contrasted images where defect segmentation is elementary. The real time inspection is then possible. A method to perform size correction, based on the knowledge of the local orientation of the surface to be controlled, has been pro ...
Improving fluorescence detection in lab on chip devices
... the sample is illuminated with light of twice the wavelength that best excites the fluorophore, so that excitation only occurs when the fluorophore absorbs two photons simultaneously.26 Since the crosssection for two-photon absorption depends on the square of the illumination intensity, this technique ...
... the sample is illuminated with light of twice the wavelength that best excites the fluorophore, so that excitation only occurs when the fluorophore absorbs two photons simultaneously.26 Since the crosssection for two-photon absorption depends on the square of the illumination intensity, this technique ...
Fabrication of elliptically figured mirror for focusing hard x rays to
... an incident beam. The calculated demagnification size 共D1兲 should be smaller than the diffraction-limited focal size 共D2兲 to obtain the optimum performances of focusing mirrors. Equation 共1兲 shows that the longer the object distance u, the smaller the focal size obtained. In this study, a focusing t ...
... an incident beam. The calculated demagnification size 共D1兲 should be smaller than the diffraction-limited focal size 共D2兲 to obtain the optimum performances of focusing mirrors. Equation 共1兲 shows that the longer the object distance u, the smaller the focal size obtained. In this study, a focusing t ...
Fourier transform infrared spectroscopy of aqueous solutions using
... In standard FT-JR instruments, the measured signal has a large dynamic range caused by the broad spectrum of the source and the basic working principle of the instrument (which is the measurement of intensity as a function of pathlength difference in the two arms of a Michelson interferometer) . As ...
... In standard FT-JR instruments, the measured signal has a large dynamic range caused by the broad spectrum of the source and the basic working principle of the instrument (which is the measurement of intensity as a function of pathlength difference in the two arms of a Michelson interferometer) . As ...
of the Physical and Technical Faculty
... At the end of the course the students should: know the basic principles of image formation according to geometrical optics have awareness of the wave processes and phenomena in the interaction of electromagnetic waves with materials know of methods of generation, detection and operation of lig ...
... At the end of the course the students should: know the basic principles of image formation according to geometrical optics have awareness of the wave processes and phenomena in the interaction of electromagnetic waves with materials know of methods of generation, detection and operation of lig ...
Numerical modelling of LCD electro
... parallel to one another. The deviation from an ideal parallel alignment is due to thermal fluctuations of the molecules. The director, represented by the unit vector _n, is the temporal average of the molecular axes over a small volume at any location within the liquid crystal. The orientation of t ...
... parallel to one another. The deviation from an ideal parallel alignment is due to thermal fluctuations of the molecules. The director, represented by the unit vector _n, is the temporal average of the molecular axes over a small volume at any location within the liquid crystal. The orientation of t ...
Optical Measurements of Interface Acoustic Waves Guided by the
... substrates. To approach rigid contact condition, the two substrates are bonded by a glue film with a thickness far smaller than the ultrasonic wavelength. Broadband pulses as well as tone bursts are used to generate the Rayleigh wave. The signal received from the probe is sampled and averaged by a d ...
... substrates. To approach rigid contact condition, the two substrates are bonded by a glue film with a thickness far smaller than the ultrasonic wavelength. Broadband pulses as well as tone bursts are used to generate the Rayleigh wave. The signal received from the probe is sampled and averaged by a d ...
Nonlinear optical properties of nanocomposite materials
... A common approach to the development of nonlinear optical materials entails searching for materials that possess, at the molecular level, desirable nonlinear optical properties. An alternative approach, which will be explored in this paper, entails combining known materials into a composite material ...
... A common approach to the development of nonlinear optical materials entails searching for materials that possess, at the molecular level, desirable nonlinear optical properties. An alternative approach, which will be explored in this paper, entails combining known materials into a composite material ...
Gullstrand equation
... in terms of the lens characteristics and the scale factor R0 . The choice of a suitable shape factor on the basis of the interface concavity/convexity seems a simple and excellent criterion to design thin lenses with an imposed geometry. This criterion requires some equivalences of reference like th ...
... in terms of the lens characteristics and the scale factor R0 . The choice of a suitable shape factor on the basis of the interface concavity/convexity seems a simple and excellent criterion to design thin lenses with an imposed geometry. This criterion requires some equivalences of reference like th ...
Free-space - University of California, San Diego
... in which free-space optical interconnect modules can be simply integrated on top of an electronic multichip module 共MCM兲. Our packaging architecture is based on a modified folded 4-f imaging system that is implemented with off-the-shelf optics, conventional electronic packaging techniques, and passi ...
... in which free-space optical interconnect modules can be simply integrated on top of an electronic multichip module 共MCM兲. Our packaging architecture is based on a modified folded 4-f imaging system that is implemented with off-the-shelf optics, conventional electronic packaging techniques, and passi ...