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... On-chip optical phased arrays have been widely investigated in the last few years [1-3] with applications in many fields including holographic video displays, optical communication systems, and low cost light detection and ranging (lidar) systems. In particular, low cost chip-scale lidars can in pri ...
... On-chip optical phased arrays have been widely investigated in the last few years [1-3] with applications in many fields including holographic video displays, optical communication systems, and low cost light detection and ranging (lidar) systems. In particular, low cost chip-scale lidars can in pri ...
University of Groningen Unraveling structure and dynamics by
... plan of a fluorescence microscope.[12] Figure 2.5 shows the scheme of the optical path in a modern confocal microscope in inverted configuration. The excitation light (a scanning laser beam) is directed from the Light Source Pinhole Aperture to a dichroic mirror and focused through the objective sys ...
... plan of a fluorescence microscope.[12] Figure 2.5 shows the scheme of the optical path in a modern confocal microscope in inverted configuration. The excitation light (a scanning laser beam) is directed from the Light Source Pinhole Aperture to a dichroic mirror and focused through the objective sys ...
Confocal Live Cell Microscopy
... image. Raising the imaging speed means either less pixels used, or shorter acquisition time of signal per pixel. Line scanners address this problem by illuminating one line at a time, and using a CCD line detector to acquire a whole row of pixels at once, thus speeding up the acquisition step. Z-st ...
... image. Raising the imaging speed means either less pixels used, or shorter acquisition time of signal per pixel. Line scanners address this problem by illuminating one line at a time, and using a CCD line detector to acquire a whole row of pixels at once, thus speeding up the acquisition step. Z-st ...
Optical properties
... Other than these properties, they do play an important role because of their physical properties. Prime physical properties of materials include: electrical properties; thermal properties; magnetic properties; and optical properties. ...
... Other than these properties, they do play an important role because of their physical properties. Prime physical properties of materials include: electrical properties; thermal properties; magnetic properties; and optical properties. ...
optical computer - 123SeminarsOnly.com
... sixteen Boolean functions, but two of them (AND, OR and NOT) are sufficient, because we can combine these to perform one of the other fourteen. We now show that it is very easy to transform a transphasor in either an AND or an OR gate. Because there is no need for optical bistability, a transphasor ...
... sixteen Boolean functions, but two of them (AND, OR and NOT) are sufficient, because we can combine these to perform one of the other fourteen. We now show that it is very easy to transform a transphasor in either an AND or an OR gate. Because there is no need for optical bistability, a transphasor ...
Greg A. Smith - curriculum vitae
... Greg A. Smith (page 4 of 4) - Mueller matrix BRDF measurements - depolarization - stress birefringence - rigorous coupled wave analysis (RCWA) Computer Skills - Solidwoks certified (CSWA - August 2009 - #C-93URMTLMYW) - ASAP & Photon Engineering tutorials - Mathematica / MatLab / C / MathCad - LabV ...
... Greg A. Smith (page 4 of 4) - Mueller matrix BRDF measurements - depolarization - stress birefringence - rigorous coupled wave analysis (RCWA) Computer Skills - Solidwoks certified (CSWA - August 2009 - #C-93URMTLMYW) - ASAP & Photon Engineering tutorials - Mathematica / MatLab / C / MathCad - LabV ...
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... ranges are illustrated in Fig.2b. The front optics optically delivers the ECE radiation onto a pair of independent heterodyne detector arrays. The lenses in the front optics, made of high density polyethylene (HDPE), provide flexible zooming and focusing like a camera lens [7]. Note that the radial ...
... ranges are illustrated in Fig.2b. The front optics optically delivers the ECE radiation onto a pair of independent heterodyne detector arrays. The lenses in the front optics, made of high density polyethylene (HDPE), provide flexible zooming and focusing like a camera lens [7]. Note that the radial ...
Detecting tissue optical and mechanical properties with an
... image resolution at depth, several methods have been developed including ultrasound modulated optical tomography (UOT) [1], time-reversed ultrasonically encoded light focusing [2] and photo-acoustic tomography [3]. In UOT, part of the scattered light is modulated by focused ultrasound, e.g. the phas ...
... image resolution at depth, several methods have been developed including ultrasound modulated optical tomography (UOT) [1], time-reversed ultrasonically encoded light focusing [2] and photo-acoustic tomography [3]. In UOT, part of the scattered light is modulated by focused ultrasound, e.g. the phas ...
Imaging complex structures with diffuse light
... a result many accept that anatomically accurate DOT images cannot be reconstructed. Accordingly, the emphasis in DOT has been on functional imaging, and on multi-modality imaging, in which simultaneously acquired MRI or CT images are used to provide anatomical detail [4]. It has been suggested that ...
... a result many accept that anatomically accurate DOT images cannot be reconstructed. Accordingly, the emphasis in DOT has been on functional imaging, and on multi-modality imaging, in which simultaneously acquired MRI or CT images are used to provide anatomical detail [4]. It has been suggested that ...
Problem 2
... denoted as Plate 1 in Fig.2-4 , is ideally reflective (reflectance equals to 100%), and the other one, denoted by Plate 2, is partially reflective ( but with a high reflectance). Suppose plane light waves are radiated from a source located near Plate 1, then such light waves are multiply reflected b ...
... denoted as Plate 1 in Fig.2-4 , is ideally reflective (reflectance equals to 100%), and the other one, denoted by Plate 2, is partially reflective ( but with a high reflectance). Suppose plane light waves are radiated from a source located near Plate 1, then such light waves are multiply reflected b ...
Non-destructive terahertz imaging of illicit drugs using spectral
... component pattern analysis, however, will cancel the effect of absorption intensity, leaving only the spatial pattern. Therefore, the low absorption will not interfere with its detection. The absorption spectra of the three drugs were measured with the same TPO system as shown in Fig. 4. The corresp ...
... component pattern analysis, however, will cancel the effect of absorption intensity, leaving only the spatial pattern. Therefore, the low absorption will not interfere with its detection. The absorption spectra of the three drugs were measured with the same TPO system as shown in Fig. 4. The corresp ...
About UV-Vis Molecular Absorbance Spectroscopy
... In molecular absorbance spectroscopy a beam of ultraviolet or visible light is directed through a sample. Some of the light may be transmitted through the sample. Light that was not transmitted through the sample was absorbed. Transmittance (T) is defined as the ratio of P/Po. Absorbance (A) is defi ...
... In molecular absorbance spectroscopy a beam of ultraviolet or visible light is directed through a sample. Some of the light may be transmitted through the sample. Light that was not transmitted through the sample was absorbed. Transmittance (T) is defined as the ratio of P/Po. Absorbance (A) is defi ...
The page, which you have just visited, was created for students of
... vitrification temperature) has got a viscosity equal 1013dPa·s and does not have long-rage over of molecules, atoms etc. ...
... vitrification temperature) has got a viscosity equal 1013dPa·s and does not have long-rage over of molecules, atoms etc. ...
Convolution in Imaging and the Optical Transfer Function Process
... is directed towards our leftward detector B, and the other (that which passes right through) goes straight towards a silver sample. Then silver sample receives the light and either reflects or absorbs it – the reflected portion heading towards detector A. The reflection is then calculated by dividin ...
... is directed towards our leftward detector B, and the other (that which passes right through) goes straight towards a silver sample. Then silver sample receives the light and either reflects or absorbs it – the reflected portion heading towards detector A. The reflection is then calculated by dividin ...
10.2 Fourier Transform Infrared Spectroscopy
... To obtain an infrared spectrum via a Fourier transform, the signal would be recorded (digitized) as a function of time to obtain F(t). Then the spectrum would be computed using the following expression, ...
... To obtain an infrared spectrum via a Fourier transform, the signal would be recorded (digitized) as a function of time to obtain F(t). Then the spectrum would be computed using the following expression, ...
Estimation of longitudinal resolution in optical coherence
... our purpose, the coherence length for several theoretical and real spectral shapes of sources having the same spectral bandwidth and central wavelength is computed. The reliability of coherence length computations toward the estimation of longitudinal resolution is discussed. © 2002 Optical Society ...
... our purpose, the coherence length for several theoretical and real spectral shapes of sources having the same spectral bandwidth and central wavelength is computed. The reliability of coherence length computations toward the estimation of longitudinal resolution is discussed. © 2002 Optical Society ...
here - Optoelectronics Research Centre
... the way both techniques are constructing their images or tomograms. An A-scan is a one dimensional, axial profile obtained at a point location while B-scan is a two dimensional, cross sectional image of the sample that is built up from a laterally displaced A-scans. OCT has less penetration depth th ...
... the way both techniques are constructing their images or tomograms. An A-scan is a one dimensional, axial profile obtained at a point location while B-scan is a two dimensional, cross sectional image of the sample that is built up from a laterally displaced A-scans. OCT has less penetration depth th ...
Appendix A Optics and Radiance The power incident on a
... Of course, this assumes that none of the source elements are far off the optical axis. If this is not true, then the detector is tilted with respect to that source element, and the correspondi ...
... Of course, this assumes that none of the source elements are far off the optical axis. If this is not true, then the detector is tilted with respect to that source element, and the correspondi ...
AcuityXR Technology Significantly Enhances Lateral Resolution of
... To test this, a sample with two 350nm lines, separated by 350nm were measured on a Bruker ContourGT X8 Optical Profiler System using standard Phase Shifting Interferometry (PSI) and AcuityXR PSI measurement ...
... To test this, a sample with two 350nm lines, separated by 350nm were measured on a Bruker ContourGT X8 Optical Profiler System using standard Phase Shifting Interferometry (PSI) and AcuityXR PSI measurement ...
Construction and Validation of a White Light Interferometer
... Even though the conventional interferometers are extensively used they are built for ruggedness and have many features and different techniques of measurement integrated which are not effectively used by all. Moreover they have features for automated adjustment which can be done manually to some ext ...
... Even though the conventional interferometers are extensively used they are built for ruggedness and have many features and different techniques of measurement integrated which are not effectively used by all. Moreover they have features for automated adjustment which can be done manually to some ext ...
Optical gratings: Nano-engineered lenses - MiNa
... of the position. The authors showed that their fabricated lens, with a diameter of 300 μm, a focal length of 17.2 mm and for operation with 1,550 nm light, successfully focused light down to a 60 μm spot. This corresponds to a numerical aperture (NA) of ~0.01. Simulations of a larger-NA device were ...
... of the position. The authors showed that their fabricated lens, with a diameter of 300 μm, a focal length of 17.2 mm and for operation with 1,550 nm light, successfully focused light down to a 60 μm spot. This corresponds to a numerical aperture (NA) of ~0.01. Simulations of a larger-NA device were ...
Boomers and Disease Detection with OCT
... Conclusions: For detection of a variety of retinal irregularities evaluated in the current study, volume OCT scanning was more sensitive than non-mydriatic retinal photography in our asymptomatic individuals. OCT detected clinically relevant disease features, such as subretinal fluid, that wer ...
... Conclusions: For detection of a variety of retinal irregularities evaluated in the current study, volume OCT scanning was more sensitive than non-mydriatic retinal photography in our asymptomatic individuals. OCT detected clinically relevant disease features, such as subretinal fluid, that wer ...
Phys342_Syl.pdf
... Addison-Wesley, 2006); This text is recommended but not strictly required; if you have access to a different optics text, it might be suitable, come see me. Grading: Homework ...
... Addison-Wesley, 2006); This text is recommended but not strictly required; if you have access to a different optics text, it might be suitable, come see me. Grading: Homework ...
a flat high-frequency scanning micromirror - EECS: www
... This torsional electrostatic combdrive offers several advantages over other electrostatic-actuator designs. First, the actuator applies torque to the mirror directly – there are no hinges to couple linear motion of an actuator into torsional mirror motion. This greatly simplifies the design of the s ...
... This torsional electrostatic combdrive offers several advantages over other electrostatic-actuator designs. First, the actuator applies torque to the mirror directly – there are no hinges to couple linear motion of an actuator into torsional mirror motion. This greatly simplifies the design of the s ...
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.