Production of photonic nanojets by using pupil
... 1782 nm in the air zone with a 10.63 E2 intensity enhancement, and then the curve (black dashed) starts to slowly drop in the modelling space. Curves for other masking models keep the same down trend following a single peak in the air medium, but the positions of the main peaks are closer to the low ...
... 1782 nm in the air zone with a 10.63 E2 intensity enhancement, and then the curve (black dashed) starts to slowly drop in the modelling space. Curves for other masking models keep the same down trend following a single peak in the air medium, but the positions of the main peaks are closer to the low ...
Optical Properties of Nanostructures
... Rayleigh scattering. The 1/λ4 dependence of the total scattered intensity in the Rayleigh case is not true in the general case for the Mie theory. These laws depend on the radius, the refractive index and the absorption of the particle. This complexity is due to resonances with the cavity modes insi ...
... Rayleigh scattering. The 1/λ4 dependence of the total scattered intensity in the Rayleigh case is not true in the general case for the Mie theory. These laws depend on the radius, the refractive index and the absorption of the particle. This complexity is due to resonances with the cavity modes insi ...
Designing Fiber Optic Systems
... tools, you can also multiplex many signals of different types onto a single fiber link. The link can even be bi-directional. Lasers and LEDS Electrical to optical video converters generally have a BNC coaxial cable connector at the input and a fiber optic connector on the output. In order to get the ...
... tools, you can also multiplex many signals of different types onto a single fiber link. The link can even be bi-directional. Lasers and LEDS Electrical to optical video converters generally have a BNC coaxial cable connector at the input and a fiber optic connector on the output. In order to get the ...
Adaptive-Optics Compensation through a High-Gain Raman Amplifier of
... The goal of the program wasto determine the extent of phasefront preservation possible in a high-gain Raman amplifier. The utility of an unconventional approach to adaptiveoptics compensation, known as "Raman look-through," was examined. The Raman look-through technique, which combines conventional ...
... The goal of the program wasto determine the extent of phasefront preservation possible in a high-gain Raman amplifier. The utility of an unconventional approach to adaptiveoptics compensation, known as "Raman look-through," was examined. The Raman look-through technique, which combines conventional ...
Nanoreplicated positive and inverted submicrometer polymer
... some efforts have been made on producing them.13–15 Actually besides SERS, the plasmonic and antireflective properties of the pyramids structure also have some potential in photovoltaic application.16,17 However, the limitations hindering its broad application were soon realized. First, the plastic ...
... some efforts have been made on producing them.13–15 Actually besides SERS, the plasmonic and antireflective properties of the pyramids structure also have some potential in photovoltaic application.16,17 However, the limitations hindering its broad application were soon realized. First, the plastic ...
PDF - Grueber Lab
... thin sheet of light, and acquire images of the illuminated plane using an orthogonally aligned second objective3-5. The sample is then translated relative to this co-aligned plane to form a 3D volumetric image. This dual-objective geometry, and the need for side-on illumination and physical translat ...
... thin sheet of light, and acquire images of the illuminated plane using an orthogonally aligned second objective3-5. The sample is then translated relative to this co-aligned plane to form a 3D volumetric image. This dual-objective geometry, and the need for side-on illumination and physical translat ...
Noise analysis of spectrometers based on speckle pattern
... to build a spectrometer [5,6]. These all-fiber spectrometers combine high transmission with fine spectral resolution, which scales with the length of the fiber. Furthermore, commercial fibers are low cost, lightweight, and can be coiled into a small volume. While these speckle-based spectrometers of ...
... to build a spectrometer [5,6]. These all-fiber spectrometers combine high transmission with fine spectral resolution, which scales with the length of the fiber. Furthermore, commercial fibers are low cost, lightweight, and can be coiled into a small volume. While these speckle-based spectrometers of ...
Experimental observation of speckle instability in Kerr random
... the wave and is highly sensitive for instance to any displacement of scatterers within the medium. This property has been widely used in applications such as speckle imaging [2] or diffuse wave spectroscopy [3, 4]. Short and long range speckle correlations, which can also results from frequency or p ...
... the wave and is highly sensitive for instance to any displacement of scatterers within the medium. This property has been widely used in applications such as speckle imaging [2] or diffuse wave spectroscopy [3, 4]. Short and long range speckle correlations, which can also results from frequency or p ...
High resolution time-resolved imaging system in the
... X-rays are the electromagnetic waves with photon energies between 100 eV (12.4 nm) and 100 keV (0.01 nm). The X-rays with photon energies below and higher than 10 keV (0.12 nm) are called soft and hard X-rays respectively [15]. Soft X-rays are highly absorbed in conventional visible optics while har ...
... X-rays are the electromagnetic waves with photon energies between 100 eV (12.4 nm) and 100 keV (0.01 nm). The X-rays with photon energies below and higher than 10 keV (0.12 nm) are called soft and hard X-rays respectively [15]. Soft X-rays are highly absorbed in conventional visible optics while har ...
1 Introduction - Stony Brook Laser Teaching Center
... Orbital angular momentum (OAM) is a special property of certain beams of light, called optical vortex beams, which appear as ring-shaped intensity distributions around a dark core. The existence of OAM in optical vortices was first predicted by Allen et al. in 1992 [1]. The OAM of such beams is quan ...
... Orbital angular momentum (OAM) is a special property of certain beams of light, called optical vortex beams, which appear as ring-shaped intensity distributions around a dark core. The existence of OAM in optical vortices was first predicted by Allen et al. in 1992 [1]. The OAM of such beams is quan ...
Absence of Evidence ? Evidence of Absence
... (perhaps driven by wishful thinking) that there are none in the sample as a whole, when in fact all that can be asserted with certainty was that there was nothing in the volumes examined at the limit of resolution for the technique used. And yet all is not lost, because if the detection thresholds o ...
... (perhaps driven by wishful thinking) that there are none in the sample as a whole, when in fact all that can be asserted with certainty was that there was nothing in the volumes examined at the limit of resolution for the technique used. And yet all is not lost, because if the detection thresholds o ...
Polarimetric imaging of crystals - Werner Kaminsky
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
Practical aspects of Microscopy
... Microscopy is a field of investigation which is used to study objects which are too small to be easily viewed by the human eye. Viewing and studying objects that range in size from millimeters (1 mm = 10-3 meter) to nanometers (1 nm = 10-9 meter) intrigues everyone and is currently applied to every ...
... Microscopy is a field of investigation which is used to study objects which are too small to be easily viewed by the human eye. Viewing and studying objects that range in size from millimeters (1 mm = 10-3 meter) to nanometers (1 nm = 10-9 meter) intrigues everyone and is currently applied to every ...
Label-free super-resolution imaging of adenoviruses by submerged
... EM plane wave (wavelength of 550 nm) arrives on the substrate, most of light energy is reflected, and only a small fraction is able to pass through the nano-slits (Figure 7a). The penetrated energy decays very rapidly and thus cannot be captured by a far-field detector. Based on the theory of Wolf a ...
... EM plane wave (wavelength of 550 nm) arrives on the substrate, most of light energy is reflected, and only a small fraction is able to pass through the nano-slits (Figure 7a). The penetrated energy decays very rapidly and thus cannot be captured by a far-field detector. Based on the theory of Wolf a ...
Single scattering by red blood cells
... corresponds well with Mie theory at 633 nm. However, they did not compare their data with other scattering theories, and they did not consider shorter wavelengths at which the absorption by hemoglobin is much stronger. Borovoi and Naats9 calculated the small-angle scattering amplitude of the erythro ...
... corresponds well with Mie theory at 633 nm. However, they did not compare their data with other scattering theories, and they did not consider shorter wavelengths at which the absorption by hemoglobin is much stronger. Borovoi and Naats9 calculated the small-angle scattering amplitude of the erythro ...
Experiment Guide - Industrial Fiber Optics
... a shadow is created. Under special circumstances it can be shown that an obstruction actually causes diffractive effects related to the wave properties of light. Figure 1 shows what occurs when an obstruction with an opening in it is placed in the path of a wave front. When the wave passes through t ...
... a shadow is created. Under special circumstances it can be shown that an obstruction actually causes diffractive effects related to the wave properties of light. Figure 1 shows what occurs when an obstruction with an opening in it is placed in the path of a wave front. When the wave passes through t ...
Soleil-Babinet Compensator
... The Soleil-Babinet Compensator is a continuously variable, zero-order retarder (waveplate) which operates over a broad wavelength range. The classical design of the compensator consists of a long birefringent wedge and a fixed wedge mounted Polarization Optics to a compensator plate. The retardance ...
... The Soleil-Babinet Compensator is a continuously variable, zero-order retarder (waveplate) which operates over a broad wavelength range. The classical design of the compensator consists of a long birefringent wedge and a fixed wedge mounted Polarization Optics to a compensator plate. The retardance ...
Diamond chemical-vapor deposition on optical fibers for
... from the nitrogen-vacancy color center in diamond. Control of the concentration of defects incorporated during the chemical vapor deposition growth process is also demonstrated. These are critical steps in developing a fiber coupled single-photon source based on optically active defect centers in di ...
... from the nitrogen-vacancy color center in diamond. Control of the concentration of defects incorporated during the chemical vapor deposition growth process is also demonstrated. These are critical steps in developing a fiber coupled single-photon source based on optically active defect centers in di ...
Optical negative refraction by four-wave mixing in thin metallic nanostructures LETTERS *
... two different materials are related to the ratio of the refractive indices in each medium. Whereas all natural materials have a positive refractive index and therefore exhibit refraction in the positive direction, artificially engineered negative index metamaterials have been shown capable of bendin ...
... two different materials are related to the ratio of the refractive indices in each medium. Whereas all natural materials have a positive refractive index and therefore exhibit refraction in the positive direction, artificially engineered negative index metamaterials have been shown capable of bendin ...
Characterization of acceptance angles of small circular
... importantly, a greater depth of field reduces the volume of object contributing to a light spot collected by the aperture (see Fig. 2). This results in improved resolution in an ABID system. Thus, it is established that a type-II ABID like the OFM will benefit from a small NA. However, the exact rel ...
... importantly, a greater depth of field reduces the volume of object contributing to a light spot collected by the aperture (see Fig. 2). This results in improved resolution in an ABID system. Thus, it is established that a type-II ABID like the OFM will benefit from a small NA. However, the exact rel ...
4.1 Simulated Emission and Photon Amplification
... The principle of the LASER. (a) Atoms in the ground state are pumped up to the energy level E3 by incoming photons of energy hυ13 = E3 –E1 . (b) Atoms at E3 rapidly decay to the metastable state at energy level E2 by emitting photons or emitting lattice vibrations; hυ32 = E3 –E2 . (c) As the states ...
... The principle of the LASER. (a) Atoms in the ground state are pumped up to the energy level E3 by incoming photons of energy hυ13 = E3 –E1 . (b) Atoms at E3 rapidly decay to the metastable state at energy level E2 by emitting photons or emitting lattice vibrations; hυ32 = E3 –E2 . (c) As the states ...
Large-Scale Optical-Field Measurements with Geometric Fibre Constructs
... the low weight and flexibility of these fibers have enabled the fabrication of large area 2D and 3D fiber webs that can capture light intensity distributions at scales and practicability unachieved so far. The reduction of diameter brings also the possibility of waving these fibers into smart fabric ...
... the low weight and flexibility of these fibers have enabled the fabrication of large area 2D and 3D fiber webs that can capture light intensity distributions at scales and practicability unachieved so far. The reduction of diameter brings also the possibility of waving these fibers into smart fabric ...
Construction of a femtosecond mode
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
... processing [2]. In the frequency domain, the broad spectral comb of equally spaced modes produced by a femtosecond mode-locked laser can be used as a ‘ruler’ to measure frequency intervals as well as it can be used as a “frequency bridge” to connect distant frequency domains [3,4]. So the ability to ...
Adaptive optics enhanced simultaneous en-face
... correct for these aberrations [7], improving the quality of the images obtained using several available retinal imaging techniques. These techniques allow, for example, the diagnosis of visual disorders involving cone loss, which is possible by means of an AO assisted fundus camera [8]. AO has also ...
... correct for these aberrations [7], improving the quality of the images obtained using several available retinal imaging techniques. These techniques allow, for example, the diagnosis of visual disorders involving cone loss, which is possible by means of an AO assisted fundus camera [8]. AO has also ...
The Molecular Structure of Bismuth Oxide by
... ery of their phase as Bi,,ZnO,,, they used ing of Bi-0 bonds; their weak relative intenthe best Bi : Zn ratio that yielded a single sities indicate that these bands may be due phase material so far as could be determined to antisymmetric stretching modes involvfrom X-ray powder diffraction, Raman, a ...
... ery of their phase as Bi,,ZnO,,, they used ing of Bi-0 bonds; their weak relative intenthe best Bi : Zn ratio that yielded a single sities indicate that these bands may be due phase material so far as could be determined to antisymmetric stretching modes involvfrom X-ray powder diffraction, Raman, a ...