Nonlinear effects in Silicon Waveguides
... • Spectrum of each soliton shifts toward longer wavelengths by a smaller amount because of a narrower Raman-gain spectrum of silicon. • Similar to the case of optical fibers, each soliton is expected to emit dispersive waves with frequencies on the blue side. • Numerical simulations confirm the pote ...
... • Spectrum of each soliton shifts toward longer wavelengths by a smaller amount because of a narrower Raman-gain spectrum of silicon. • Similar to the case of optical fibers, each soliton is expected to emit dispersive waves with frequencies on the blue side. • Numerical simulations confirm the pote ...
Optical microscopy laboratory practice 2012
... 4. Nose Piece: This connects the objective lens to the microscope body. With a turret, or rotating nose piece as many as five objectives can be attached to create different powers of magnification when rotated into position and used with the existing eyepiece. 5. Objective: The lens closest to the o ...
... 4. Nose Piece: This connects the objective lens to the microscope body. With a turret, or rotating nose piece as many as five objectives can be attached to create different powers of magnification when rotated into position and used with the existing eyepiece. 5. Objective: The lens closest to the o ...
Preparation of Poincare' beams with a same-path polarization/spatial-mode interferoemter
... represented on the Poincaré sphere, onto the transverse mode of the beam.1 These beams are a general type of space-variant polarization modes of which cylindrical vector beams are a subset. Poincare beams have been generated by direct superposition in either free space1 or in optical fibers;2 or by ...
... represented on the Poincaré sphere, onto the transverse mode of the beam.1 These beams are a general type of space-variant polarization modes of which cylindrical vector beams are a subset. Poincare beams have been generated by direct superposition in either free space1 or in optical fibers;2 or by ...
RAY OPTICS
... Rays that make small angles (such that sin 8 = 0) with the mirror’s axis are called paraxial rays. In the paraxial approximation, where only paraxial rays are considered, a spherical mirror has a focusing property like that of the paraboloidal mirror and an imaging property like that of the elliptic ...
... Rays that make small angles (such that sin 8 = 0) with the mirror’s axis are called paraxial rays. In the paraxial approximation, where only paraxial rays are considered, a spherical mirror has a focusing property like that of the paraboloidal mirror and an imaging property like that of the elliptic ...
NSS-MIC 2009 Conference Record Template
... Considering the good results already obtained in terms of light output gain and the very encouraging ones on the timing resolution we have started a study to mass-produce PhCs in a cost effective way. Indeed the technology used for the preparation of our samples is very flexible allowing us to test ...
... Considering the good results already obtained in terms of light output gain and the very encouraging ones on the timing resolution we have started a study to mass-produce PhCs in a cost effective way. Indeed the technology used for the preparation of our samples is very flexible allowing us to test ...
High-Resolution Retinal Imaging using Adaptive Optics in a
... be stressed. Most people rank vision above the other human senses, and the eyes provide the first stage in the complex process that leads to our perception of vision. At this very instant, light reflected from this page is being collected by the reader’s eye and focused on the retina at the back of ...
... be stressed. Most people rank vision above the other human senses, and the eyes provide the first stage in the complex process that leads to our perception of vision. At this very instant, light reflected from this page is being collected by the reader’s eye and focused on the retina at the back of ...
Doppler-Free Spectroscopy MIT Department of Physics
... a tunable monochromatic source (such as certain lasers), a spectrum can be measured ’one wavelength at a time’ by measuring light intensity (fluorescence or transmission) as a function of the wavelength of the tunable source. In either case, physically important structures in such spectra are often ...
... a tunable monochromatic source (such as certain lasers), a spectrum can be measured ’one wavelength at a time’ by measuring light intensity (fluorescence or transmission) as a function of the wavelength of the tunable source. In either case, physically important structures in such spectra are often ...
An optical leaky wave antenna with Si perturbations inside a
... waveguide that radiates according to LW theory [4], as described above. In conventional approaches one has either pure semiconductor waveguides [9] or pure dielectric waveguides [10]. Here, the proposed work deals with a dielectric waveguide with semiconductor perturbations. Hence, one can control t ...
... waveguide that radiates according to LW theory [4], as described above. In conventional approaches one has either pure semiconductor waveguides [9] or pure dielectric waveguides [10]. Here, the proposed work deals with a dielectric waveguide with semiconductor perturbations. Hence, one can control t ...
Persistence of the inner limiting membrane after epiretinal
... there is limited comparability between most studies. Discrepancies in the reported prevalence rates for different populations might partially be due to variation in measurement techniques. While some studies used fundus photography, others used optical coherence tomography. ERMs are sometimes hard t ...
... there is limited comparability between most studies. Discrepancies in the reported prevalence rates for different populations might partially be due to variation in measurement techniques. While some studies used fundus photography, others used optical coherence tomography. ERMs are sometimes hard t ...
Fast Modulation of Terahertz Quantum Cascade
... incorporating high electron mobility transistors in a metamaterial device30 with a modulation cutoff frequency of about 10 MHz. Lately, an increasing number of experiments have been focused on the realization of graphene-based terahertz modulators because of its remarkable properties, such as the wid ...
... incorporating high electron mobility transistors in a metamaterial device30 with a modulation cutoff frequency of about 10 MHz. Lately, an increasing number of experiments have been focused on the realization of graphene-based terahertz modulators because of its remarkable properties, such as the wid ...
Light scattering models of white blood cells and back
... computation and shown in Fig. 5. The figure gives a comparison of different distributing graphs under three situations. Figure 5 shows that the scattering intensity vibrates within 0–π degrees; the forward scattering intensity is stronger than the backward one which responses to Mie scattering theor ...
... computation and shown in Fig. 5. The figure gives a comparison of different distributing graphs under three situations. Figure 5 shows that the scattering intensity vibrates within 0–π degrees; the forward scattering intensity is stronger than the backward one which responses to Mie scattering theor ...
How laser works
... "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly the same wavelength. A system of mirrors at both ends of the laser glass amplifier caus ...
... "tuned" to the excited electrons' energy is directed through the glass slabs. This laser pulse stimulates the electrons to drop to their lower energy states, or "ground" states, and emit a laser photon of exactly the same wavelength. A system of mirrors at both ends of the laser glass amplifier caus ...
Optics and Quantum Electronics E. P. Ippen
... Ti:sapphire laser oscillator [1]. Detection of the carrier-envelope phase is then achieved by focusing the short pulses directly from the oscillator into a BBO-crystal. As a further example of nonlinear optics with such short pulses, the interference between second and third harmonic components was ...
... Ti:sapphire laser oscillator [1]. Detection of the carrier-envelope phase is then achieved by focusing the short pulses directly from the oscillator into a BBO-crystal. As a further example of nonlinear optics with such short pulses, the interference between second and third harmonic components was ...
Chapter 5. Mouse and Tackball
... IBM, SUN Microsystems, Symbolics, Xerox, and many others. The largest mouse vendors are Alps Electric, Logitech, and Mouse Systems. The mouse has now become the universal Graphic User Interface (GUI) input device. Mice are commonly rated by their resolution, typically stated as counts per inch (cpi) ...
... IBM, SUN Microsystems, Symbolics, Xerox, and many others. The largest mouse vendors are Alps Electric, Logitech, and Mouse Systems. The mouse has now become the universal Graphic User Interface (GUI) input device. Mice are commonly rated by their resolution, typically stated as counts per inch (cpi) ...
Atomic Spectroscopy
... As you will recall from earlier in this discussion, absorption lines used in atomic absorption analysis are due to transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in ...
... As you will recall from earlier in this discussion, absorption lines used in atomic absorption analysis are due to transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in ...
Optical polarization tutorial
... Find the major and minor semiaxes of the ellipse as well as the angle between the axes and the horizontal. ...
... Find the major and minor semiaxes of the ellipse as well as the angle between the axes and the horizontal. ...
Three-dimensional superresolution technology applied to
... which is highly nonlinear and dependent on the ...
... which is highly nonlinear and dependent on the ...
3D–2D–3D photonic crystal heterostructures fabricated by direct
... layer (comprising waveguides, etc.) is clad by 3D photonic bandgap materials on both sides (Fig. 1). In principle this approach totally eliminates losses into the third dimension for frequencies in the 3D photonic bandgap. Furthermore, it allows the incorporation of several parallel 2D optical micro ...
... layer (comprising waveguides, etc.) is clad by 3D photonic bandgap materials on both sides (Fig. 1). In principle this approach totally eliminates losses into the third dimension for frequencies in the 3D photonic bandgap. Furthermore, it allows the incorporation of several parallel 2D optical micro ...
Final Thesis_Compatible Mode
... microwave communication only in that the wavelengths employed are shorter (or equivalently, the frequencies employed are higher). However, in another very real sense it differs markedly from these older technologies because, for the first time, the wavelengths involved are much shorter than the dime ...
... microwave communication only in that the wavelengths employed are shorter (or equivalently, the frequencies employed are higher). However, in another very real sense it differs markedly from these older technologies because, for the first time, the wavelengths involved are much shorter than the dime ...
chapter 6
... of the light rays. For example, when the fundus (eye botom) is observed with reflected light (fundus reflex), the incident and reflected light do not interfere. This principle is, however, violated with the laser rays which have high intensity (nonlinear optics). 3 and 4. At the boundary between two ...
... of the light rays. For example, when the fundus (eye botom) is observed with reflected light (fundus reflex), the incident and reflected light do not interfere. This principle is, however, violated with the laser rays which have high intensity (nonlinear optics). 3 and 4. At the boundary between two ...
Light Microscopy
... focusing knobs are present. Focusing can be achieved by moving either the specimen stage or the objective lens. A mechanical focus mechanism usually has some means to tightening and loosen it. Mechanical focus mechanisms need periodic servicing. Their lubricant dries out, they become dirty and hard ...
... focusing knobs are present. Focusing can be achieved by moving either the specimen stage or the objective lens. A mechanical focus mechanism usually has some means to tightening and loosen it. Mechanical focus mechanisms need periodic servicing. Their lubricant dries out, they become dirty and hard ...
Pulse Delay Chromatic Dispersion Measurements in Single Mode
... the Internet and its applications such as teleconferencing. Optic fibre does not only play a pivotal role in the telecommunication industry but it is also an important component in the field of medicine, where it is used in laparoscopic surgery and also in laser surgery. Other uses such as the trans ...
... the Internet and its applications such as teleconferencing. Optic fibre does not only play a pivotal role in the telecommunication industry but it is also an important component in the field of medicine, where it is used in laparoscopic surgery and also in laser surgery. Other uses such as the trans ...
Quantum Optics and Photonics
... non-zero velocities and not compromising performance.11 The optical transitions involved in this process are illustrated in Figure 5a. Here, F and B are the forward and backward pumps, respectively, S is the signal; and C is the conjugate. To illustrate the mechanisms at work in this OPC, consider, ...
... non-zero velocities and not compromising performance.11 The optical transitions involved in this process are illustrated in Figure 5a. Here, F and B are the forward and backward pumps, respectively, S is the signal; and C is the conjugate. To illustrate the mechanisms at work in this OPC, consider, ...
Wavefront Technology
... The effect is that the image of each object point resembles a comet, having vertical and horizontal components. Common in patients with decentered laser ablation. • Spherical aberrations : When peripheral light rays focus in front of more central rays the effect is called spherical aberration. Comm ...
... The effect is that the image of each object point resembles a comet, having vertical and horizontal components. Common in patients with decentered laser ablation. • Spherical aberrations : When peripheral light rays focus in front of more central rays the effect is called spherical aberration. Comm ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.