I. Results from Prior NSF Support
... This proposal is for continuation of work on "Atomic, Molecular, and Ionic Physics" under grant PHY-92-22768 which runs through April 30, 2002. The total amount of this award is $###,000 and the PI has received an equipment ($##,000) and two REU (totaling $##) supplements. This grant provides the ma ...
... This proposal is for continuation of work on "Atomic, Molecular, and Ionic Physics" under grant PHY-92-22768 which runs through April 30, 2002. The total amount of this award is $###,000 and the PI has received an equipment ($##,000) and two REU (totaling $##) supplements. This grant provides the ma ...
3.4-?m ZGP RISTRA nanosecond - AS
... ~109 mm NF can exceed several hundred for visible to near-IR wavelengths and pump beam diameters of 6 – 8 mm. For non-image-rotating ns OPOs NF ≥ 100 is usually a recipe for very poor beam quality, however the RISTRA can deliver good beam quality for NF ≥ 400 [12, 13], and it has generated a 1550-nm ...
... ~109 mm NF can exceed several hundred for visible to near-IR wavelengths and pump beam diameters of 6 – 8 mm. For non-image-rotating ns OPOs NF ≥ 100 is usually a recipe for very poor beam quality, however the RISTRA can deliver good beam quality for NF ≥ 400 [12, 13], and it has generated a 1550-nm ...
Fiber Optic Communications
... measurement purposes on short fibers. – Cutoff wavelength is the minimum propagation wavelength that can be transmitted. – Mode-field diameter (output spot size) is approximately the core diameter for multimode fibers. ...
... measurement purposes on short fibers. – Cutoff wavelength is the minimum propagation wavelength that can be transmitted. – Mode-field diameter (output spot size) is approximately the core diameter for multimode fibers. ...
IOSR Journal of Applied Physics (IOSR-JAP)
... 2.1 Principles of optical interferometry The interference phenomenon first studied by Isaac Newton, who observed the interference fringes in the form of concentric rings formed from a light source after passing a plano-convex lens, could not be explained by simply regarding light as rays that propag ...
... 2.1 Principles of optical interferometry The interference phenomenon first studied by Isaac Newton, who observed the interference fringes in the form of concentric rings formed from a light source after passing a plano-convex lens, could not be explained by simply regarding light as rays that propag ...
cut off frequency for different modes - CDEEP
... As seen earlier, has to be real for a propagating mode. The frequency range over which remains real therefore is important information. It can be shown that for to be real the frequency of the wave has to be greater than certain value, called the cut-off frequency. 1. Cutoff frequency is defin ...
... As seen earlier, has to be real for a propagating mode. The frequency range over which remains real therefore is important information. It can be shown that for to be real the frequency of the wave has to be greater than certain value, called the cut-off frequency. 1. Cutoff frequency is defin ...
5. Optical fiber
... (2) Fibre optic splicing is a process of joining two optical fibres together so that the light can passes through from one fibre to the other. There is a decrease in optical power detected by a detector when laser light passes through a misaligned splice. This results in a small amount of light loss ...
... (2) Fibre optic splicing is a process of joining two optical fibres together so that the light can passes through from one fibre to the other. There is a decrease in optical power detected by a detector when laser light passes through a misaligned splice. This results in a small amount of light loss ...
Active Aperture Control and Sensor Modulation for Flexible Imaging
... and [15] propose the use of a spatially varying neutral density filter in front of the camera to capture high dynamic range image. These two methods must be implemented on a panning camera in order to image every scene point with different exposures. [12] discussed three possible designs to achieve ...
... and [15] propose the use of a spatially varying neutral density filter in front of the camera to capture high dynamic range image. These two methods must be implemented on a panning camera in order to image every scene point with different exposures. [12] discussed three possible designs to achieve ...
three-dimensional solutions in media with spatial dependence of
... focusing regime of propagation optical rings, can be generated but they are modulationally unstable [13,14]. One alternative way of stabilizing optical vortices in 2D and 3D case, using saturable [15, 16] or cubic–quintic [17, 18] nonlinearity, was also discussed. On the other hand, the experiments ...
... focusing regime of propagation optical rings, can be generated but they are modulationally unstable [13,14]. One alternative way of stabilizing optical vortices in 2D and 3D case, using saturable [15, 16] or cubic–quintic [17, 18] nonlinearity, was also discussed. On the other hand, the experiments ...
Physical Optics: Diffraction, Interference, and Polarization of Light
... When light passes through two narrow slits separated by a distance d, the two light beams that emerge will interface with one another. Some of the time this interference will be constructive, while other times it will be destructive. The resulting pattern will be a series of bright and dark lines eq ...
... When light passes through two narrow slits separated by a distance d, the two light beams that emerge will interface with one another. Some of the time this interference will be constructive, while other times it will be destructive. The resulting pattern will be a series of bright and dark lines eq ...
Министерство высшего и среднего специального образования
... divided at one or more partially reflecting surfaces at each of which part of the light being reflected and part transmitted. This method called division of amplitude can be used with extended sources and so effectс mау be of greater intensity than with division of wave front. In either case, it is ...
... divided at one or more partially reflecting surfaces at each of which part of the light being reflected and part transmitted. This method called division of amplitude can be used with extended sources and so effectс mау be of greater intensity than with division of wave front. In either case, it is ...
Fundamental Limits in Confocal Microscopy
... The data recorded from a confocal microscope will, in the simplest case, be a set of intensity values (usually representing the concentration of fluorophore) for every voxel throughout a 3D volume within the specimen. Though these data may often be displayed as an image, it should always be remember ...
... The data recorded from a confocal microscope will, in the simplest case, be a set of intensity values (usually representing the concentration of fluorophore) for every voxel throughout a 3D volume within the specimen. Though these data may often be displayed as an image, it should always be remember ...
Real-time digital holographic microscopy Ventseslav Sainov and Elena Stoykova
... digitally recorded interfering object and reference beams has witnessed a real progress as a result of recent advances in laser sources, two dimensional photo sensors (CCD or CMOS cameras) and digital signal processing techniques [1-3]. Digital holography exhibits some exceptional features which mak ...
... digitally recorded interfering object and reference beams has witnessed a real progress as a result of recent advances in laser sources, two dimensional photo sensors (CCD or CMOS cameras) and digital signal processing techniques [1-3]. Digital holography exhibits some exceptional features which mak ...
Controllable optical negative refraction and
... through a perturbative medium12 . Realization of phase conjugation is based on degenerate four-wave mixing, in which two counterpropagating beams are used to write a holographic grating into a nonlinear crystal, while a third beam is diffracted in a direction exactly opposite to the incident wave. T ...
... through a perturbative medium12 . Realization of phase conjugation is based on degenerate four-wave mixing, in which two counterpropagating beams are used to write a holographic grating into a nonlinear crystal, while a third beam is diffracted in a direction exactly opposite to the incident wave. T ...
Laser Linewidth Characterization
... i (t ) = R éêPs (t ) + PLO + 2 Ps (t )PLO cos (2p fIF t + D f (t ))ù ú ë û The first two terms correspond to the direct intensity detection of Es(t) and ELO(t) The third term - the actual optical frequency is gone and only the difference frequency is left ...
... i (t ) = R éêPs (t ) + PLO + 2 Ps (t )PLO cos (2p fIF t + D f (t ))ù ú ë û The first two terms correspond to the direct intensity detection of Es(t) and ELO(t) The third term - the actual optical frequency is gone and only the difference frequency is left ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... makes it suitable for high speed data transmission system such as it combats Intersymbol Interference(ISI) resulting from a dispersive channel[7]. OFDM provides more resistance to frequency selective fading as compared to a single carrier transmission system.OFDM[8] finds various applications in dig ...
... makes it suitable for high speed data transmission system such as it combats Intersymbol Interference(ISI) resulting from a dispersive channel[7]. OFDM provides more resistance to frequency selective fading as compared to a single carrier transmission system.OFDM[8] finds various applications in dig ...
Photonic mm-Wave Local Oscillator - Harvard
... The open loop phase drift of the system was tested by power splitting the output of a microwave synthesizer, modulating our system with one of the two identical outputs and using the other output to pump a conventional multiplier chain. The synthesizer’s output frequency was 12.5 GHz and the final f ...
... The open loop phase drift of the system was tested by power splitting the output of a microwave synthesizer, modulating our system with one of the two identical outputs and using the other output to pump a conventional multiplier chain. The synthesizer’s output frequency was 12.5 GHz and the final f ...
Confocal Microscopy - Emory Physics
... point. (Recall from introductory optics that points do not need to be at the focal point of the lens for the system of lenses to form an image.) In confocal microscopy, the aim is to see only the image of the dark blue point.[1] Accordingly, if a screen with a pinhole is placed at the other side of ...
... point. (Recall from introductory optics that points do not need to be at the focal point of the lens for the system of lenses to form an image.) In confocal microscopy, the aim is to see only the image of the dark blue point.[1] Accordingly, if a screen with a pinhole is placed at the other side of ...
An optical cloak made of dielectrics LETTERS *
... However, even with the advances in optical metamaterials20–22 , scaling sub-wavelength metallic elements and placing them in an arbitrarily designed spatial manner still remain challenging at optical frequencies. Here, we experimentally demonstrate optical cloaking using a dielectric carpet cloak de ...
... However, even with the advances in optical metamaterials20–22 , scaling sub-wavelength metallic elements and placing them in an arbitrarily designed spatial manner still remain challenging at optical frequencies. Here, we experimentally demonstrate optical cloaking using a dielectric carpet cloak de ...
Lens equation for flat lenses made with hyperbolic
... propagating waves carrying subwavelength details. The conjugate points for such a lens are however located right on the interfaces of the structure, which leads to place both object and image at the vicinity of the hyperbolic lens interfaces. This is also required to obtain subwavelength resolved im ...
... propagating waves carrying subwavelength details. The conjugate points for such a lens are however located right on the interfaces of the structure, which leads to place both object and image at the vicinity of the hyperbolic lens interfaces. This is also required to obtain subwavelength resolved im ...
Total Reflection X-Ray Fluorescence Spectrometer
... with the increase in the angular divergence, which is tolerable for TXRF to a limited extent only. The possibility to improve the divergence by means of an additional curved mirror was reported in the past. One may hope that this additional mirror corrects some of the adverse characteristics of the ...
... with the increase in the angular divergence, which is tolerable for TXRF to a limited extent only. The possibility to improve the divergence by means of an additional curved mirror was reported in the past. One may hope that this additional mirror corrects some of the adverse characteristics of the ...
OPTICAL FILTER COATINGS
... measurement of the amplitude of specific spectral lines. This combination has an enormous throughput advantage since the collecting area of filters is very large compared to instrumental slits. Additionally, interference filters enable the viewing and near-instantaneous recording of very spectrally ...
... measurement of the amplitude of specific spectral lines. This combination has an enormous throughput advantage since the collecting area of filters is very large compared to instrumental slits. Additionally, interference filters enable the viewing and near-instantaneous recording of very spectrally ...
The Faraday Effect
... These are identical, so either may serve a polarizer, and the other as analyzer. The fine adjust screws of one has been damaged however, so it is best to use this as the polarizer. Do not change the setting of this during a series of measurements. Anisotropy provides selective absorption in Polaroid ...
... These are identical, so either may serve a polarizer, and the other as analyzer. The fine adjust screws of one has been damaged however, so it is best to use this as the polarizer. Do not change the setting of this during a series of measurements. Anisotropy provides selective absorption in Polaroid ...
Application of Fast Light in Gravitational Wave Detection with ... In this paper, we study several designs for interferometric...
... produce the strongest signals. There will continue to be a need for detectors that are far more sensitive, in order to detect weaker sources of GW. Furthermore, more sensitive detectors may make the detection of GWs much easier as an engineering project, possibly using configurations that are far mo ...
... produce the strongest signals. There will continue to be a need for detectors that are far more sensitive, in order to detect weaker sources of GW. Furthermore, more sensitive detectors may make the detection of GWs much easier as an engineering project, possibly using configurations that are far mo ...
07-HW7 - Rose
... Solve: (a) We have three identical loudspeakers as sources. r between speakers 1 and 2 is 1.0 m and 2.0 m. Thus r 21 , which gives perfect destructive interference for in-phase sources. That is, the interference of the waves from loudspeakers 1 and 2 is perfectly destructive, leaving only ...
... Solve: (a) We have three identical loudspeakers as sources. r between speakers 1 and 2 is 1.0 m and 2.0 m. Thus r 21 , which gives perfect destructive interference for in-phase sources. That is, the interference of the waves from loudspeakers 1 and 2 is perfectly destructive, leaving only ...
Physics 323 Lecture Notes Part I: Optics
... reinforce each other, but where a crest and a trough coincide, the two waves actually cancel. This is illustrated in Figure 1.2. If light is a wave, two sources emitting waves in a synchronized fashion1 should produce a pattern of alternating bright and dark bands on a screen. Thomas Young tried the ...
... reinforce each other, but where a crest and a trough coincide, the two waves actually cancel. This is illustrated in Figure 1.2. If light is a wave, two sources emitting waves in a synchronized fashion1 should produce a pattern of alternating bright and dark bands on a screen. Thomas Young tried the ...
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.