reflection properties of a gaussian laser beam from multilayer
... sound vibrations in a distant object. The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, picture or window) in response to the sound waves of the conversation. The object preferably has a smooth surface. The laser beam is di ...
... sound vibrations in a distant object. The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, picture or window) in response to the sound waves of the conversation. The object preferably has a smooth surface. The laser beam is di ...
Propagation dynamics of optical vortices
... or other localized cores, the amplitude can be modeled as tanh(r/wv), and we shall call this a tanh vortex. As the size of the tanh vortex vanishes (w v → 0) the vortex is said to become a point vortex. This paper was written to help develop an intuitive understanding of OV motion and to describe th ...
... or other localized cores, the amplitude can be modeled as tanh(r/wv), and we shall call this a tanh vortex. As the size of the tanh vortex vanishes (w v → 0) the vortex is said to become a point vortex. This paper was written to help develop an intuitive understanding of OV motion and to describe th ...
Two-Color Two-Photon Excitation Using Femtosecond Laser Pulses
... fluorescence using femtosecond pulses from a Ti:Sa laser. Since these experiments were carried out using a time-gated camera system as a detector which is normally used for fluorescence lifetime imaging, we believe that applications of 2c2p excitation to microscopy are now within reach. The use of f ...
... fluorescence using femtosecond pulses from a Ti:Sa laser. Since these experiments were carried out using a time-gated camera system as a detector which is normally used for fluorescence lifetime imaging, we believe that applications of 2c2p excitation to microscopy are now within reach. The use of f ...
Surface Plasmon Engineering in Graphene Functionalized with
... SIESTA code25,26 with the LDA exchange-correlation functional. We use a local-basis set of double-ζ polarized atomic orbitals with an energy cutoff of 70 Ry. The structural relaxations are considered converged when the magnitude of the force on each atom was smaller than 0.01 eV/Å. All of graphene’s ...
... SIESTA code25,26 with the LDA exchange-correlation functional. We use a local-basis set of double-ζ polarized atomic orbitals with an energy cutoff of 70 Ry. The structural relaxations are considered converged when the magnitude of the force on each atom was smaller than 0.01 eV/Å. All of graphene’s ...
Gaussian Beam Optics [Hecht Ch. 13.1 pages 594
... the M2 factor typically is between 1.1 and 1.3. Collimated TEM00 diode laser beams usually have an M2 ranging from 1.1 to 1.7. For high-energy multimode lasers, the M2 factor can be as high as 25 or 30. In all cases, the M2 factor affects the characteristics of a laser beam and cannot be neglected i ...
... the M2 factor typically is between 1.1 and 1.3. Collimated TEM00 diode laser beams usually have an M2 ranging from 1.1 to 1.7. For high-energy multimode lasers, the M2 factor can be as high as 25 or 30. In all cases, the M2 factor affects the characteristics of a laser beam and cannot be neglected i ...
Partially coherent beam shaping and imaging
... which is based on correlation functions obtained either by calculating time averages of certain products of field quantities or averages over ensembles formed by individual field realizations. On the other hand, there are numerous non-stationary sources including mode-locked femtosecond lasers, supe ...
... which is based on correlation functions obtained either by calculating time averages of certain products of field quantities or averages over ensembles formed by individual field realizations. On the other hand, there are numerous non-stationary sources including mode-locked femtosecond lasers, supe ...
Chapter 4 Optical Resonator
... 2. Semiconductor lasers are often fabricated from crystals whose surfaces are cleaved along crystal planes. These surfaces act as reflectors and therefore serve as the resonator mirrors. Consider a crystal with refractive index n = 3.6 placed in air (n = 1). The light reflects between two parallel s ...
... 2. Semiconductor lasers are often fabricated from crystals whose surfaces are cleaved along crystal planes. These surfaces act as reflectors and therefore serve as the resonator mirrors. Consider a crystal with refractive index n = 3.6 placed in air (n = 1). The light reflects between two parallel s ...
Design, fabrication and testing of microlens arrays for sensors and
... always act like a microlens. Nevertheless, it is not trivial to fabricate microlenses with good optical performance. The difference between a suitable lens profile and an unacceptable profile is only a fraction of a wavelength. Thus, careful optimization of all processing steps is necessary. During ...
... always act like a microlens. Nevertheless, it is not trivial to fabricate microlenses with good optical performance. The difference between a suitable lens profile and an unacceptable profile is only a fraction of a wavelength. Thus, careful optimization of all processing steps is necessary. During ...
Orbital angular momentum: origins
... example of a light beam carrying OAM is one with a phase in the transverse plane of φ(r, φ) = exp(i�φ), where φ is the angular coordinate and � can be any integer value, positive or negative. As shown in Fig. 2, such beams have helical phase fronts with the number of intertwined helices and the hand ...
... example of a light beam carrying OAM is one with a phase in the transverse plane of φ(r, φ) = exp(i�φ), where φ is the angular coordinate and � can be any integer value, positive or negative. As shown in Fig. 2, such beams have helical phase fronts with the number of intertwined helices and the hand ...
WAVE INTERACTIONS WITH ARRAYS OF BOTTOM
... cylinder arrays is the main focus of this thesis. In acoustics, a sound may be attenuated while it propagates through a layer of bubbly liquid. In fact, if the natural frequency of the bubbles is in the range of the wave periods, the attenuation becomes more evident. The ultimate objective of the re ...
... cylinder arrays is the main focus of this thesis. In acoustics, a sound may be attenuated while it propagates through a layer of bubbly liquid. In fact, if the natural frequency of the bubbles is in the range of the wave periods, the attenuation becomes more evident. The ultimate objective of the re ...
soliton - Széchenyi István Egyetem
... Erbium doped fiber amplifiers, periodically placed in the transmission line distance of the amplifiers should be less then the soliton dispersion length dispersion shifted fibers or filters for reshaping quantum noise arise spontaneous emission noise Gordon—House jitter ESM Zilina 2008 ...
... Erbium doped fiber amplifiers, periodically placed in the transmission line distance of the amplifiers should be less then the soliton dispersion length dispersion shifted fibers or filters for reshaping quantum noise arise spontaneous emission noise Gordon—House jitter ESM Zilina 2008 ...
Numerical study of all-optical slow-light delays via
... Ba共NO3兲2-crystal-based Raman amplifier, and more recently Okawachi et al.9 and Song et al.10 independently demonstrated slow light in an optical fiber SBS amplifier. One advantage of using an amplifying resonance due to stimulated scattering is that the resonance can be created at any wavelength thr ...
... Ba共NO3兲2-crystal-based Raman amplifier, and more recently Okawachi et al.9 and Song et al.10 independently demonstrated slow light in an optical fiber SBS amplifier. One advantage of using an amplifying resonance due to stimulated scattering is that the resonance can be created at any wavelength thr ...
Get PDF - OSA Publishing
... light within tissue simultaneously makes possible and limits high-resolution imaging techniques such as reflectance-mode confocal microscopy [1] and optical coherence tomography (OCT) [2]. To better understand the interaction of light within tissue and, thus, the possibilities of these and other ima ...
... light within tissue simultaneously makes possible and limits high-resolution imaging techniques such as reflectance-mode confocal microscopy [1] and optical coherence tomography (OCT) [2]. To better understand the interaction of light within tissue and, thus, the possibilities of these and other ima ...
Recent progress in investigating optical rogue waves
... formation of a soliton, leading to rare low amplitude events in a pulse train [15]. Under other experimental conditions, rogue waves may arise through soliton collisions, which can produce events with high red-shifted energy [47, 49]. The energy exchange between the solitons is facilitated by third- ...
... formation of a soliton, leading to rare low amplitude events in a pulse train [15]. Under other experimental conditions, rogue waves may arise through soliton collisions, which can produce events with high red-shifted energy [47, 49]. The energy exchange between the solitons is facilitated by third- ...
pdf 228KB - People.csail.mit.edu
... In Fig. 7 we explore how the CSF scattering coefficient affects the partial pathlength in the superficial layers and the brain versus time delay. The absolute partial pathlength in Fig. 7a shows that no difference is observed for μ s' ,CSF = 0.1 and 0.01 mm-1 but that a difference is observed when μ ...
... In Fig. 7 we explore how the CSF scattering coefficient affects the partial pathlength in the superficial layers and the brain versus time delay. The absolute partial pathlength in Fig. 7a shows that no difference is observed for μ s' ,CSF = 0.1 and 0.01 mm-1 but that a difference is observed when μ ...