Physics 428 Spring 2015 Syllabus Instructor:
... Geometrical optics will not be covered. The topics that will be covered include: the electromagnetic spectrum; radiometry; waves and the wave equation; harmonic waves; electromagnetic waves; superposition of waves; standing waves; phase and group velocities; quantization of electromagnetic radiation ...
... Geometrical optics will not be covered. The topics that will be covered include: the electromagnetic spectrum; radiometry; waves and the wave equation; harmonic waves; electromagnetic waves; superposition of waves; standing waves; phase and group velocities; quantization of electromagnetic radiation ...
Steady State Simulation of Semiconductor Optical Amplifier
... • A schematic diagram of a basic SOA is shown in Fig. (A). • The active region in the device imparts gain to an input signal. • An external electric current provides the energy source that enables gain to take place. ...
... • A schematic diagram of a basic SOA is shown in Fig. (A). • The active region in the device imparts gain to an input signal. • An external electric current provides the energy source that enables gain to take place. ...
The electromagnetic spectrum
... The speed of sound is 0.2 miles / second. How long does it take the sound of a lightning strike to reach you if it occurs 0.2 miles away? A. 0.2 seconds B. 1 second C. 5 seconds D. 20 seconds ...
... The speed of sound is 0.2 miles / second. How long does it take the sound of a lightning strike to reach you if it occurs 0.2 miles away? A. 0.2 seconds B. 1 second C. 5 seconds D. 20 seconds ...
The Very Basics of Geometric Optics 5.1.2 Basic Geometric Optics
... Spherical aberration. Following Snellius' law, and tracing the light rays for spherical lenses, it becomes clear that light rays running not close to the center of the lens are focussed to a point different from those close to the lens. The effect is small if some aperture keeps the light rays close ...
... Spherical aberration. Following Snellius' law, and tracing the light rays for spherical lenses, it becomes clear that light rays running not close to the center of the lens are focussed to a point different from those close to the lens. The effect is small if some aperture keeps the light rays close ...
CMU3 - Fast and Simple High-Resolution Optical Spectrum Analyzer
... Commonly, diffraction grating based optical spectrum analysers (OSA) are used for this purpose. The typical resolution bandwidth of an OSA lies in the range of 0.06nm, which corresponds to 7.5GHz at 1550nm. In [1] a wavelength measurement method with a resolution bandwidth in the femtometer range wa ...
... Commonly, diffraction grating based optical spectrum analysers (OSA) are used for this purpose. The typical resolution bandwidth of an OSA lies in the range of 0.06nm, which corresponds to 7.5GHz at 1550nm. In [1] a wavelength measurement method with a resolution bandwidth in the femtometer range wa ...
Conroy2005-SurfaceMetrology.pdf
... techniques with modern electronics, computers, and software has produced extremely powerful measurement tools. Typically are two different techniques commonly used in interferometry, phase shifting and scanning white light. Phase-shifting interferometry has proven to be extremely powerful and many c ...
... techniques with modern electronics, computers, and software has produced extremely powerful measurement tools. Typically are two different techniques commonly used in interferometry, phase shifting and scanning white light. Phase-shifting interferometry has proven to be extremely powerful and many c ...
Equipment list: Description Supplier Model Optical test bench
... Centering accuracy: < 0.1 arcmin (tilt), < 2 µm (decenter) Machining tolerances: < 2 µm Flatness of plano surfaces: < 1 µm Cylindricity of lens cell: < 1 µm. ...
... Centering accuracy: < 0.1 arcmin (tilt), < 2 µm (decenter) Machining tolerances: < 2 µm Flatness of plano surfaces: < 1 µm Cylindricity of lens cell: < 1 µm. ...
report - CREATE project
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
Influence of ocular chromatic aberration and pupil size on transverse
... A. G. Podoleanu and D. A. Jackson, “Noise analysis of a combined optical coherence tomograph and a ...
... A. G. Podoleanu and D. A. Jackson, “Noise analysis of a combined optical coherence tomograph and a ...
Youngs Double Slit
... of slits only. Set up the white light or white LED source on the optical bench. Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be ...
... of slits only. Set up the white light or white LED source on the optical bench. Bring the slit up close to the eye and view the light source. What do you see? The interference pattern can only occur when the light diffracted by the two slits is coherent or in phase with each other. Coherence can be ...
Optical Detection of Early Damage in Retinal Ganglion Cells in a
... PURPOSE. Elastic light backscattering spectroscopy (ELBS) has exquisite sensitivity to the ultrastructural properties of tissue and thus has been applied to detect various diseases associated with ultrastructural alterations in their early stages. This study aims to test whether ELBS can detect earl ...
... PURPOSE. Elastic light backscattering spectroscopy (ELBS) has exquisite sensitivity to the ultrastructural properties of tissue and thus has been applied to detect various diseases associated with ultrastructural alterations in their early stages. This study aims to test whether ELBS can detect earl ...
Ultrahigh-resolution optical coherence tomography
... noninvasive, high-resolution, in vivo, two- or threedimensional cross-sectional imaging of microstructural morphology in transparent and nontransparent biological tissue in situ. Utilization of broad-bandwidth light sources in OCT permits tissue morphology to be imaged in detail at depths significan ...
... noninvasive, high-resolution, in vivo, two- or threedimensional cross-sectional imaging of microstructural morphology in transparent and nontransparent biological tissue in situ. Utilization of broad-bandwidth light sources in OCT permits tissue morphology to be imaged in detail at depths significan ...
Quasi-3D plasmonic coupling scheme for near-field optical lithography and imaging Y W
... efficient optical coupling reaching the sub-10 nm region for the purposes of high-throughput lithography and imaging. In this new scheme, we utilize two sets of phase-mismatched SPP gratings to generate standing waves with preferable off-plane E-field components at the center. The obtained SPPs are ...
... efficient optical coupling reaching the sub-10 nm region for the purposes of high-throughput lithography and imaging. In this new scheme, we utilize two sets of phase-mismatched SPP gratings to generate standing waves with preferable off-plane E-field components at the center. The obtained SPPs are ...
DG Papazoglou et al.
... Optical aberrations can be envisioned as a way to impose polynomial phase distributions on plane wave! Coma aberration Cubic phase ! ...
... Optical aberrations can be envisioned as a way to impose polynomial phase distributions on plane wave! Coma aberration Cubic phase ! ...
3-D Ultrahigh Resolution Optical Coherence Tomography with
... noninvasive optical biopsy of the human retina (D. Huang, et al, 1991). OCT is based on low coherence interferometry (R. C. Youngquist, et al, 1987), in which the pattern of interference between the reference and object beams is used to determine the amount of light reflected back from a certain poi ...
... noninvasive optical biopsy of the human retina (D. Huang, et al, 1991). OCT is based on low coherence interferometry (R. C. Youngquist, et al, 1987), in which the pattern of interference between the reference and object beams is used to determine the amount of light reflected back from a certain poi ...
HW #8 Solutions
... 9 Does the wave frequency or wavelength remain the same when crossing a boundary from one medium into another? The waves frequency stays the same as it crosses the boundary. The wavelength changes to match the wave speed λ0 = v/f . The reason the frequency remains the same is that the oscillation fr ...
... 9 Does the wave frequency or wavelength remain the same when crossing a boundary from one medium into another? The waves frequency stays the same as it crosses the boundary. The wavelength changes to match the wave speed λ0 = v/f . The reason the frequency remains the same is that the oscillation fr ...
Length poster
... Although the iodine-stabilised helium-neon laser provides a very stable optical frequency (or vacuum wavelength), it is already possible to build lasers with an optical frequency that is known around ten thousand times more accurately. The iodinestabilised laser is limited because the iodine molecul ...
... Although the iodine-stabilised helium-neon laser provides a very stable optical frequency (or vacuum wavelength), it is already possible to build lasers with an optical frequency that is known around ten thousand times more accurately. The iodinestabilised laser is limited because the iodine molecul ...
Lecture 16 - Purdue Physics
... • Incident light: the light striking the mirror. • Normal line: a line perpendicular to the surface of the mirror at the point where the light hits it. • Angle of incidence: angle between the incident beam and the normal line. • Angle of reflection: angle between the reflected beam and the normal li ...
... • Incident light: the light striking the mirror. • Normal line: a line perpendicular to the surface of the mirror at the point where the light hits it. • Angle of incidence: angle between the incident beam and the normal line. • Angle of reflection: angle between the reflected beam and the normal li ...
Optical Coherence Tomography OCT of the Anterior Eye Segment
... Optical coherence tomography (OCT) is a high-resolution method of imaging ocular structures. Anterior segment (AS) OCT is being evaluated as a noninvasive diagnostic and screening tool for the detection of angle closure glaucoma, to assess corneal thickness and opacity, to evaluate presurgical and p ...
... Optical coherence tomography (OCT) is a high-resolution method of imaging ocular structures. Anterior segment (AS) OCT is being evaluated as a noninvasive diagnostic and screening tool for the detection of angle closure glaucoma, to assess corneal thickness and opacity, to evaluate presurgical and p ...
File
... If these two pulses were to meet they would momentarily cancel as they passed one another. This happens whenever light waves are reflected from a material with a higher refractive index. If the waves are reflected from a lower refractive index material there is no phase change. ...
... If these two pulses were to meet they would momentarily cancel as they passed one another. This happens whenever light waves are reflected from a material with a higher refractive index. If the waves are reflected from a lower refractive index material there is no phase change. ...
Laser beam shaping in industrial applications Wei-Yuen Tan 84717925
... Optics so far in this course: • Two related concepts: – Ray direction due to refraction – Optical path length ...
... Optics so far in this course: • Two related concepts: – Ray direction due to refraction – Optical path length ...
Dynamic measurements using a Fizeau
... The encoding process for instantaneous interferometry may be accomplished through spatial separation of the interfering beams,1,2,3,4 through the introduction of a tilt angle, as is possible in a modified Fizeau,5,6,7 or through coherence matching of two interferometers that operate in tandem.8,9 Si ...
... The encoding process for instantaneous interferometry may be accomplished through spatial separation of the interfering beams,1,2,3,4 through the introduction of a tilt angle, as is possible in a modified Fizeau,5,6,7 or through coherence matching of two interferometers that operate in tandem.8,9 Si ...
Notes
... speed of light, i.e., c = 2.99792... × 108 m/s. (b) The smallest channel wavelength and the largest channel wavelength in the given band are ...
... speed of light, i.e., c = 2.99792... × 108 m/s. (b) The smallest channel wavelength and the largest channel wavelength in the given band are ...
Editorial: This Issue At A Glance - Iranian Journal of Ophthalmology
... months to five years of follow-up they declare with much reserve that there is no risk of recurrence of the symptoms caused by the shock or stress of the intervention. They had included in their investigation only those without recurrence of neuritis at the last six months before the intervention. R ...
... months to five years of follow-up they declare with much reserve that there is no risk of recurrence of the symptoms caused by the shock or stress of the intervention. They had included in their investigation only those without recurrence of neuritis at the last six months before the intervention. R ...
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.