Large Dispersive Effects near the Band Edges of Photonic Crystals
... the sample with the incoming pulse. We used bandwidthlimited ultrashort pulses (70–100 fs) from a Ti:sapphire laser (Spectra Physics Tsunami), tunable from 720 to 835 nm, with a repetition rate of 82 MHz. First, a doublepulsed signal is obtained with a Mach-Zehnder interferometer in which the refere ...
... the sample with the incoming pulse. We used bandwidthlimited ultrashort pulses (70–100 fs) from a Ti:sapphire laser (Spectra Physics Tsunami), tunable from 720 to 835 nm, with a repetition rate of 82 MHz. First, a doublepulsed signal is obtained with a Mach-Zehnder interferometer in which the refere ...
WDM Concepts and Components
... • Transparency: Each optical channel can carry any transmission format (different asynchronous bit rates, analog or digital) • Scalability– Buy and install equipment for additional demand as needed • Wavelength routing and switching: Wavelength is used as another dimension to time and space ...
... • Transparency: Each optical channel can carry any transmission format (different asynchronous bit rates, analog or digital) • Scalability– Buy and install equipment for additional demand as needed • Wavelength routing and switching: Wavelength is used as another dimension to time and space ...
Visible Light, Wide-Angle Graded Metasurface for Back Reflection
... platform for microwave or terahertz graphene-based metasurfaces, which are inherently deeply subwavelength. Here, we chose to realize the device characterized in Figure 2A using a nanostructured dielectric metasurface operating in the visible spectrum (Figure 3A,B) with subwavelength thickness t = 1 ...
... platform for microwave or terahertz graphene-based metasurfaces, which are inherently deeply subwavelength. Here, we chose to realize the device characterized in Figure 2A using a nanostructured dielectric metasurface operating in the visible spectrum (Figure 3A,B) with subwavelength thickness t = 1 ...
Shaping the focal intensity distribution using spatial coherence
... shown. In Fig. 6(a) two regions can be distinguished, regions where the fields are approximately co-phasal [i.e., 共0 , 0 , 0 ; x , 0 , 0 ; 兲 ⬇ 1] and regions where the fields have opposite phases [i.e., 共0 , 0 , 0 ; x , 0 , 0 ; 兲 ⬇ −1]. In between these two regions the spectral degree of coheren ...
... shown. In Fig. 6(a) two regions can be distinguished, regions where the fields are approximately co-phasal [i.e., 共0 , 0 , 0 ; x , 0 , 0 ; 兲 ⬇ 1] and regions where the fields have opposite phases [i.e., 共0 , 0 , 0 ; x , 0 , 0 ; 兲 ⬇ −1]. In between these two regions the spectral degree of coheren ...
In the figure shown above, an object is placed a distance in front of a
... • VR is proportional to the current flowing through the resistor (Ohm’s law). • VC is proportional to the current on the capacitor. The current through the capacitor is given and two of the four graphs for this current are not sine functions and therefore can immediately be eliminated. Furthermore, ...
... • VR is proportional to the current flowing through the resistor (Ohm’s law). • VC is proportional to the current on the capacitor. The current through the capacitor is given and two of the four graphs for this current are not sine functions and therefore can immediately be eliminated. Furthermore, ...
A new method for measuring the diffusivity of liquid binary mixtures
... The study of diffusion in liquid binary systems by means of optical methods, based on measurements of refractive index variation, is well known and in evolution. In recent years holographic methods [14] have replaced the traditional interferometers with considerable advantages, but today the number ...
... The study of diffusion in liquid binary systems by means of optical methods, based on measurements of refractive index variation, is well known and in evolution. In recent years holographic methods [14] have replaced the traditional interferometers with considerable advantages, but today the number ...
Physical Optics - Haverford College
... so it reforms into an image of the diffraction grating. We will see shortly how this simple experiment can be used to understand how imaging works from a wave perspective. First, let’s recall how periodic waves are represented. Most of us are familiar with repetitions in time, such as periodic oscil ...
... so it reforms into an image of the diffraction grating. We will see shortly how this simple experiment can be used to understand how imaging works from a wave perspective. First, let’s recall how periodic waves are represented. Most of us are familiar with repetitions in time, such as periodic oscil ...
AOA Seal of Certification and Acceptance
... the Transitions® family of products, particularly the recently introduced Transitions® Signature™ lenses. Clear eyeglass wearers also received Transitions® Trial Decals™ so that they could discover what it’s like to wear Transitions lenses in their own prescription eyeglasses. ...
... the Transitions® family of products, particularly the recently introduced Transitions® Signature™ lenses. Clear eyeglass wearers also received Transitions® Trial Decals™ so that they could discover what it’s like to wear Transitions lenses in their own prescription eyeglasses. ...
Linköping University Post Print Optical properties of carbon nanofiber photonic crystals
... perpendicular direction. These systems have generated much interest in recent years as a means to control light at length scales on the order of the wavelength [1]. In this article we report the study of properties of 2D PC slabs consisting of freestanding carbon nanofibers (CNF) grown on a metallic ...
... perpendicular direction. These systems have generated much interest in recent years as a means to control light at length scales on the order of the wavelength [1]. In this article we report the study of properties of 2D PC slabs consisting of freestanding carbon nanofibers (CNF) grown on a metallic ...
optical devices
... Compliant with industry standards (XLMD-MSA), both the laser diode module with built-in driver modulator and the large, dynamic range PD-TIA module deliver exceptional performance using Mitsubishi Electric's own optical elements (EMLs, PDs) and an original high-frequency circuit design. As transpond ...
... Compliant with industry standards (XLMD-MSA), both the laser diode module with built-in driver modulator and the large, dynamic range PD-TIA module deliver exceptional performance using Mitsubishi Electric's own optical elements (EMLs, PDs) and an original high-frequency circuit design. As transpond ...
Upholding the diffraction limit in the focusing of light and sound
... an object even if such features in the optical intensity distribution cannot be resolved. It is also possible to resolve subwavelength features using near-field optical methods, in which case structures with subwavelength dimensions such as needles, tapered fibers or optical antennas are used to co ...
... an object even if such features in the optical intensity distribution cannot be resolved. It is also possible to resolve subwavelength features using near-field optical methods, in which case structures with subwavelength dimensions such as needles, tapered fibers or optical antennas are used to co ...
Geometrical Optics: Curved Mirrors Worksheet Part I:
... the object in a “ray diagram”. As you move the object (with the slider) or move the point source, there is a ray that always passes through the focal point. Describe that ray-- this is a ray generally included in a ray diagram. ...
... the object in a “ray diagram”. As you move the object (with the slider) or move the point source, there is a ray that always passes through the focal point. Describe that ray-- this is a ray generally included in a ray diagram. ...
1. What is optics?
... the visual field. The rays were sensitive, and conveyed information back to the observer’s intellect about the distance and orientation of surfaces. He summarised much of Euclid and went on to describe a way to measure the angle of refraction, though he failed to notice the empirical relationship b ...
... the visual field. The rays were sensitive, and conveyed information back to the observer’s intellect about the distance and orientation of surfaces. He summarised much of Euclid and went on to describe a way to measure the angle of refraction, though he failed to notice the empirical relationship b ...
:KDWLV/LJKW" (OHFWURPDJQHWLF:DYH7KHRU\
... While these thermal detectors have a very flat spectral responsivity, they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially bet ...
... While these thermal detectors have a very flat spectral responsivity, they suffer from temperature sensitivity, and usually must be artificially cooled. Another strategy employed by thermal detectors is to modulate incident light with a chopper. This allows the detector to measure differentially bet ...
Chapter 6: Polarization and Crystal Optics
... P6-7. A plane, linearly polarized light wave, with intensity I 0 , is transmitted through a system of perfect linear polarizers (we assume that all light is transmitted in the transmission direction but in the perpendicular direction all light is absorbed). Give for the following systems of polarize ...
... P6-7. A plane, linearly polarized light wave, with intensity I 0 , is transmitted through a system of perfect linear polarizers (we assume that all light is transmitted in the transmission direction but in the perpendicular direction all light is absorbed). Give for the following systems of polarize ...
Construction Of Multiple-beam Optical Traps
... deflections, with nanometer-level reproducibility. This, in turn, places significant demands on the pointing stability of the laser source and scanning hardware. Fig. 2 demonstrates the use of a multiple-beam trap, where 10 silica beads (0.5- m diameter) are trapped individually in a circular patter ...
... deflections, with nanometer-level reproducibility. This, in turn, places significant demands on the pointing stability of the laser source and scanning hardware. Fig. 2 demonstrates the use of a multiple-beam trap, where 10 silica beads (0.5- m diameter) are trapped individually in a circular patter ...
Evaluation and application of spatial light modulators for
... a 9,5 µm pitch and a 92% fill factor and the XGA LCOS X97R3F0 made by Philips having 1024x768 pixels with a 19 µm pitch and a 93% fill factor. Such elements are very well suited for different applications in active metrology such as HNDT [13] and comparative digital holography [14]. Although LCDs ar ...
... a 9,5 µm pitch and a 92% fill factor and the XGA LCOS X97R3F0 made by Philips having 1024x768 pixels with a 19 µm pitch and a 93% fill factor. Such elements are very well suited for different applications in active metrology such as HNDT [13] and comparative digital holography [14]. Although LCDs ar ...
Simultaneous calibration of optical tweezers spring constant and
... When the same laser beam is used for optical trapping and position detection, the exclusive experimental set-up discussed here, back-focal plane (BFP) detection reports on the displacement of the trapped particle with respect to the center of the optical tweezers. Forces are readily computed by mult ...
... When the same laser beam is used for optical trapping and position detection, the exclusive experimental set-up discussed here, back-focal plane (BFP) detection reports on the displacement of the trapped particle with respect to the center of the optical tweezers. Forces are readily computed by mult ...
Report From the VSIA Taskforce on Standards for Reporting Optical
... research and related clinical disciplines (eg, refractive surgery, ophthalmic lens design, ametropia diagnosis) demands that the vision community establish common metrics, terminology, and other reporting standards for the specification of optical imperfections of eyes. Currently there exists a plet ...
... research and related clinical disciplines (eg, refractive surgery, ophthalmic lens design, ametropia diagnosis) demands that the vision community establish common metrics, terminology, and other reporting standards for the specification of optical imperfections of eyes. Currently there exists a plet ...
Technical Information on Optics
... of coherence: temporal and spatial coherence. Coherence length The greatest optical path difference between two partial waves from a radiation source where interference can still occur. Collimator Optical lens system designed to image a point light source in such a way that all the emerging rays are ...
... of coherence: temporal and spatial coherence. Coherence length The greatest optical path difference between two partial waves from a radiation source where interference can still occur. Collimator Optical lens system designed to image a point light source in such a way that all the emerging rays are ...
Low Signal Latency in Optical Fiber Networks
... Latency is the elapsed time between sending and receiving a message in an actionable form. Low latency is important whenever action on the message is time sensitive. The most common low latency application today is high frequency trading by the financial services industry where trades are initiated ...
... Latency is the elapsed time between sending and receiving a message in an actionable form. Low latency is important whenever action on the message is time sensitive. The most common low latency application today is high frequency trading by the financial services industry where trades are initiated ...
L09 Instru Spectrofluorometery
... visible range (longer wavelength) and this is the most common case. In other cases: maybe both of them (absorbed+emitted) in UV range or both in visible range. Is it the same case of the spontaneous decay of radioactive elements (isotopes) like uranium and plutonium? Is it as the same as what we sai ...
... visible range (longer wavelength) and this is the most common case. In other cases: maybe both of them (absorbed+emitted) in UV range or both in visible range. Is it the same case of the spontaneous decay of radioactive elements (isotopes) like uranium and plutonium? Is it as the same as what we sai ...
Chapter 6: Speed of Light
... measured in a classroom are too small to be detected by our biological senses. The point of this experiment is to circumvent this problem by using fast electronics to record time differences that otherwise would be hard to measure. The speed of light is large but it is not infinite. As a prelude to ...
... measured in a classroom are too small to be detected by our biological senses. The point of this experiment is to circumvent this problem by using fast electronics to record time differences that otherwise would be hard to measure. The speed of light is large but it is not infinite. As a prelude to ...
Synchronization of Micromechanical Oscillators Using Light
... resulting optical resonance splits into a symmetric, lower frequency mode (fig. 1c) and an anti-symmetric higher frequency mode (fig. 1d). Light coupled to any of these supermodes interacts with both the L and the R cavities and therefore we can choose to pump light only into one of the cavities (th ...
... resulting optical resonance splits into a symmetric, lower frequency mode (fig. 1c) and an anti-symmetric higher frequency mode (fig. 1d). Light coupled to any of these supermodes interacts with both the L and the R cavities and therefore we can choose to pump light only into one of the cavities (th ...
![RE: [interferometry] Re: LUPI - Shack variation Ric: The original](http://s1.studyres.com/store/data/011245292_1-578bd4d5b805243b0b07f7be13d775c5-300x300.png)
RE: [interferometry] Re: LUPI - Shack variation Ric: The original
... new continuous wave stabilized laser. In fact the glue is drying as we speak. I’ll have my first shot at testing some finished 15” and 18” mirrors with the new laser tomorrow. Hopes of high (or at least higher) contrast are high as this laser has a much longer coherence length than the typical HeNe ...
... new continuous wave stabilized laser. In fact the glue is drying as we speak. I’ll have my first shot at testing some finished 15” and 18” mirrors with the new laser tomorrow. Hopes of high (or at least higher) contrast are high as this laser has a much longer coherence length than the typical HeNe ...
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.