Statistical Mechanics
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
Ultra–large field-of-view two-photon microscopy
... of murine cortex with an objective-limited spatial resolution across an 8 mm by 10 mm field. The lateral resolution is approximately 1 µm and the maximum scan speed is 5 mm/ms. The scan pathway employs large diameter compound lenses to minimize aberrations and performs near theoretical limits. We de ...
... of murine cortex with an objective-limited spatial resolution across an 8 mm by 10 mm field. The lateral resolution is approximately 1 µm and the maximum scan speed is 5 mm/ms. The scan pathway employs large diameter compound lenses to minimize aberrations and performs near theoretical limits. We de ...
Light and optics
... This radiation is very energetic. It causes tanning, but it can also do irreparable damage to us. There is an increase in the amount of UV radiation that is reaching us because the ozone layer in the atmosphere (which protects us from the damaging radiation by absorbing the UV rays) is being thi ...
... This radiation is very energetic. It causes tanning, but it can also do irreparable damage to us. There is an increase in the amount of UV radiation that is reaching us because the ozone layer in the atmosphere (which protects us from the damaging radiation by absorbing the UV rays) is being thi ...
Lecture 12 - Lehigh University
... The compositions of the more traditional optical glasses are usually based on multicomponent silicates, including heavy elements such as Pb, Ba, La, Gd, Ta and Nb. The basic compositions usually fall into two categories: (1) high dispersion flint glasses (normally containing PbO); (2) low dispersion ...
... The compositions of the more traditional optical glasses are usually based on multicomponent silicates, including heavy elements such as Pb, Ba, La, Gd, Ta and Nb. The basic compositions usually fall into two categories: (1) high dispersion flint glasses (normally containing PbO); (2) low dispersion ...
Recent advances in diffuse optical imaging
... a small number of times carry more spatial information than diffusive photons. Furthermore, if measurements could be made of minimally scattered photons, images could be reconstructed using the Radon transform as in x-ray CT, avoiding most of the difficulties associated with diffuse optical image rec ...
... a small number of times carry more spatial information than diffusive photons. Furthermore, if measurements could be made of minimally scattered photons, images could be reconstructed using the Radon transform as in x-ray CT, avoiding most of the difficulties associated with diffuse optical image rec ...
Polymer Based Photonic Crystals
... assembly. Co-extruded films containing large numbers of alternating layers of different refractive indices were produced over 30 years ago at Dow, with first order reflectivities approaching 100 %.[8,10] A fundamental problem encountered with co-extruded films is the occurrence of undesired thicknes ...
... assembly. Co-extruded films containing large numbers of alternating layers of different refractive indices were produced over 30 years ago at Dow, with first order reflectivities approaching 100 %.[8,10] A fundamental problem encountered with co-extruded films is the occurrence of undesired thicknes ...
Get
... In conventional MPP, the optimal resolution (the minimum distance between resolvable features) and minimum feature sizes (the smallest individual feature) are closely linked, as the fabrication process is point-by-point, and generally both can be ~100nm. However, in the DMD-based approach that is pr ...
... In conventional MPP, the optimal resolution (the minimum distance between resolvable features) and minimum feature sizes (the smallest individual feature) are closely linked, as the fabrication process is point-by-point, and generally both can be ~100nm. However, in the DMD-based approach that is pr ...
Plasmons, polaritons What are plasmons and what are
... electronic interband transitions in the visible range, whereby specific energies (colors) are absorbed. Thus, those metals have a distinct color. Polaritons: Polaritons are bosonic (quasi‐)particles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole‐carry ...
... electronic interband transitions in the visible range, whereby specific energies (colors) are absorbed. Thus, those metals have a distinct color. Polaritons: Polaritons are bosonic (quasi‐)particles resulting from strong coupling of electromagnetic waves with an electric or magnetic dipole‐carry ...
High resolution spectral self-interference fluorescence microscopy
... limit. But because of diffraction, standard light microscopes are not able to discern two objects closer together than about 200 nm in the focal plane. In the direction perpendicular to the focal plane, the resolution is worse, about 600 nm. There is an impressive body of work under way where the op ...
... limit. But because of diffraction, standard light microscopes are not able to discern two objects closer together than about 200 nm in the focal plane. In the direction perpendicular to the focal plane, the resolution is worse, about 600 nm. There is an impressive body of work under way where the op ...
Structural and Functional Ocular Imaging
... proposed that structural parameters may be abnormal before pathway-specific functional parameters and before a white‑on‑white change. “However, I believe,” Dr Garway‑Heath continued, “that this is not the true picture and actually structure and function damage probably proceeds in tandem; it’s simpl ...
... proposed that structural parameters may be abnormal before pathway-specific functional parameters and before a white‑on‑white change. “However, I believe,” Dr Garway‑Heath continued, “that this is not the true picture and actually structure and function damage probably proceeds in tandem; it’s simpl ...
Design for a Compact Tunable Ti:Sapphire Laser.
... However, for many applications strict single-mode radiation is not crucial and an additional frequency component, separated for instance by several gigahertz, may often be tolerated. If one permits a second longitudinal mode, the complexity of the laser design may be drastically reduced. In this Let ...
... However, for many applications strict single-mode radiation is not crucial and an additional frequency component, separated for instance by several gigahertz, may often be tolerated. If one permits a second longitudinal mode, the complexity of the laser design may be drastically reduced. In this Let ...
Photoacoustic imaging velocimetry for flow
... detected by the 64-element linear transducer array. Each element of the array has a width of 0.3 mm, a height of 4 mm, and a center frequency of 7.5 MHz with a 70% bandwidth. The array has an effective length of 46 mm and the pitch between adjacent elements is 0.72mm. The parallel data-acquisition ( ...
... detected by the 64-element linear transducer array. Each element of the array has a width of 0.3 mm, a height of 4 mm, and a center frequency of 7.5 MHz with a 70% bandwidth. The array has an effective length of 46 mm and the pitch between adjacent elements is 0.72mm. The parallel data-acquisition ( ...
Interference effects Thin film interference Phase
... refractive index to a higher refractive index the phase is shifted by p. • When a wave is reflected in going from a medium with a higher refractive index to a lower refractive index, the phase is not shifted. ...
... refractive index to a higher refractive index the phase is shifted by p. • When a wave is reflected in going from a medium with a higher refractive index to a lower refractive index, the phase is not shifted. ...
Technological Education Institute (TEI) of Piraeus
... - Such changes can be caused either externally through induced microbend loss or through measurand induced changes in cladding loss - Mechanical changes can be induced through modifications to the local chemical ...
... - Such changes can be caused either externally through induced microbend loss or through measurand induced changes in cladding loss - Mechanical changes can be induced through modifications to the local chemical ...
Optics
... Remarks: (i) For image formation, it is not necessary that object should be present in front of mirror. (ii) It is not possible to locate an object by a single ray. It is for this reason that the surface of reflecting mirror is not visible to us. Any point like A on the surface sends only one ray A ...
... Remarks: (i) For image formation, it is not necessary that object should be present in front of mirror. (ii) It is not possible to locate an object by a single ray. It is for this reason that the surface of reflecting mirror is not visible to us. Any point like A on the surface sends only one ray A ...
Proposal and testing of dual-beam dynamic light
... Figure 1共b兲 shows the experimental setup and optical arrangement. Incident laser beam LB from a solidstate laser 共Coherent Verdi兲 of wavelength ⫽ 532 nm is directed through Bragg cell BC. The incident beam becomes multiple diverging beams when passing through the Bragg cell, which acts as an optic ...
... Figure 1共b兲 shows the experimental setup and optical arrangement. Incident laser beam LB from a solidstate laser 共Coherent Verdi兲 of wavelength ⫽ 532 nm is directed through Bragg cell BC. The incident beam becomes multiple diverging beams when passing through the Bragg cell, which acts as an optic ...
optical trap
... without damaging them. Optical tweezers prove very useful for this because, not only can they manipulate small particles very precisely, but, using infrared light, they can do so without causing damage. The development of the single beam optical trap was an important advance in optical tweezers, bec ...
... without damaging them. Optical tweezers prove very useful for this because, not only can they manipulate small particles very precisely, but, using infrared light, they can do so without causing damage. The development of the single beam optical trap was an important advance in optical tweezers, bec ...
PDF
... reflected beam size to fill the back aperture of a high numerical aperture, infinity corrected 100x oil-immersion objective (Olympus UPLSAPO-100XO). The objective is corrected for chromatic aberrations up to the infrared, which assures that the imaging focal plane at visible wavelengths coincides wi ...
... reflected beam size to fill the back aperture of a high numerical aperture, infinity corrected 100x oil-immersion objective (Olympus UPLSAPO-100XO). The objective is corrected for chromatic aberrations up to the infrared, which assures that the imaging focal plane at visible wavelengths coincides wi ...
An accurate technique to record the angular distribution of
... of the fiber is used in that case to select the linear polarization that corresponds to either of the helical channels of the scattered light. In experiments with circularly polarized light, the incident and scattered waves will pass the quarter waveplate under necessarily different angles. Since on ...
... of the fiber is used in that case to select the linear polarization that corresponds to either of the helical channels of the scattered light. In experiments with circularly polarized light, the incident and scattered waves will pass the quarter waveplate under necessarily different angles. Since on ...
The Michelson Interferometer
... There is a height adjustment knob. Note the mirror translation scheme has two knobs, a fine tuning knob and gross adjustment. The fine tuning knob may be used when the gear is in contact with the gear for the gross adjustment knob. Turn the gross adjustment knob only when the fine tuning knob is dis ...
... There is a height adjustment knob. Note the mirror translation scheme has two knobs, a fine tuning knob and gross adjustment. The fine tuning knob may be used when the gear is in contact with the gear for the gross adjustment knob. Turn the gross adjustment knob only when the fine tuning knob is dis ...
FUL TEXT
... ts – sample time The gyro scale factor K is the ratio of the output signal (average detector current) to the input angular rate. id ...
... ts – sample time The gyro scale factor K is the ratio of the output signal (average detector current) to the input angular rate. id ...
using ultra-short millimetre wave pulses
... optical domain where it is used to characterise propagation down optical fibres. Ultrashort laser pulses are injected into the system under test and any discontinuities reflect signal back to a detector. Time-of-flight measurements are made to locate the position of the discontinuity along the fibre ...
... optical domain where it is used to characterise propagation down optical fibres. Ultrashort laser pulses are injected into the system under test and any discontinuities reflect signal back to a detector. Time-of-flight measurements are made to locate the position of the discontinuity along the fibre ...
Influence of Magnetic Field Inhomogeneity on a Magneto
... The protection of relaying systems is a prominent task for optical current sensors. These sensors can recognize sudden failures, such as surges, and identify the failure parts in the power systems. These relaying systems require current sensors, which are mostly electromagnetic devices that suffer f ...
... The protection of relaying systems is a prominent task for optical current sensors. These sensors can recognize sudden failures, such as surges, and identify the failure parts in the power systems. These relaying systems require current sensors, which are mostly electromagnetic devices that suffer f ...
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.