3D widefield light microscopy with better than 100 nm axial resolution
... be published elsewhere. I5M image data were processed with a truncated inverse filter (equal to the inverse OTF where the OTF magnitude is above a threshold and zero elsewhere, multiplied by an apodization function), followed by a few iterations of the Jannson–van Cittert method which imposes the po ...
... be published elsewhere. I5M image data were processed with a truncated inverse filter (equal to the inverse OTF where the OTF magnitude is above a threshold and zero elsewhere, multiplied by an apodization function), followed by a few iterations of the Jannson–van Cittert method which imposes the po ...
Wave Light Test
... 9. Both microwaves and visible light are parts of the electromagnetic spectrum and display the same wave properties. A microwave transmitter produces plane-polarised waves. A wire grid is placed in front of the transmitter as shown below. It is rotated in the plane ABCD. A maximum value of 100 mA i ...
... 9. Both microwaves and visible light are parts of the electromagnetic spectrum and display the same wave properties. A microwave transmitter produces plane-polarised waves. A wire grid is placed in front of the transmitter as shown below. It is rotated in the plane ABCD. A maximum value of 100 mA i ...
Correlation of axial length of the eyeball and peripapillary retinal
... Myopia is one of the most common eye problem in the world. Its association with primary open angle glaucoma is well recognized. The risk of developing glaucoma is 2-3 times higher in myopic individuals than in non-myopic individuals.1However, the clinical diagnosis of glaucoma in such patients is ch ...
... Myopia is one of the most common eye problem in the world. Its association with primary open angle glaucoma is well recognized. The risk of developing glaucoma is 2-3 times higher in myopic individuals than in non-myopic individuals.1However, the clinical diagnosis of glaucoma in such patients is ch ...
untitled - PhysRevLett.111.243901
... using optical phase conjugation and ultrasound modulation, the latter successfully generated a guide star inside a turbid medium [13,14]. Although the approach allowed fluorescence signal acquisition in reflection mode (with respect to the phase conjugated illumination), the original ultrasound modu ...
... using optical phase conjugation and ultrasound modulation, the latter successfully generated a guide star inside a turbid medium [13,14]. Although the approach allowed fluorescence signal acquisition in reflection mode (with respect to the phase conjugated illumination), the original ultrasound modu ...
A method for characterizing longitudinal chromatic aberration of
... part in the imaging the system is particularly sensitive to aberrations, whether specimen induced or inherent in the optical elements used (see, e.g. Pawley, 1995; Fricker & White, 1992). In applications such as single- or multiphoton-confocal fluorescence or second and third harmonic generation ima ...
... part in the imaging the system is particularly sensitive to aberrations, whether specimen induced or inherent in the optical elements used (see, e.g. Pawley, 1995; Fricker & White, 1992). In applications such as single- or multiphoton-confocal fluorescence or second and third harmonic generation ima ...
Imaging scanning tunneling microscope
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
... The prospect of creating photonic devices based on surface plasmon propagation is attracting increasing attention.1–5 The motivation has been to create miniaturized optics that would enable higher bandwidth optical computing, all-optical interconnects for telecommunications, or even ‘‘nano-lasers.’’ ...
Slowing Down the Speed of Light - The Institute of Optics
... Exciting possibilities exist for optical buffering and other photonics applications if normalized time delays in the range of 10 – 1000 can be achieved. Next: Find material with faster response (semiconductors?) (to allow delay of shorter pulses) ...
... Exciting possibilities exist for optical buffering and other photonics applications if normalized time delays in the range of 10 – 1000 can be achieved. Next: Find material with faster response (semiconductors?) (to allow delay of shorter pulses) ...
Optical Interferometers
... interferometer arms is equal to the integer number of wavelengths ∆l = mλ, and destructive interference corresponds to the half-integer number of wavelengths ∆l = (m + 1/2)λ (here m is an integer number). Since the wavelength of light is small (600 − 700 nm for a red laser), Michelson interferometer ...
... interferometer arms is equal to the integer number of wavelengths ∆l = mλ, and destructive interference corresponds to the half-integer number of wavelengths ∆l = (m + 1/2)λ (here m is an integer number). Since the wavelength of light is small (600 − 700 nm for a red laser), Michelson interferometer ...
Broadband Semiconductor Light Source for Optical Sensing
... focusing characteristics and cost, which is required as the light source for medical diagnosis. The optical semiconductor device having such a broad spectrum is called a super luminescent diode (SLD), and is known as a device having high luminescence of semiconductor lasers and low coherence propert ...
... focusing characteristics and cost, which is required as the light source for medical diagnosis. The optical semiconductor device having such a broad spectrum is called a super luminescent diode (SLD), and is known as a device having high luminescence of semiconductor lasers and low coherence propert ...
PP2325852588
... role in deciding the workable layout of any network and can improve accuracy, speed, scalability, reliability, if chosen and implement best possible way. The speed of optical switches is necessarily has to match with currently new generation photonic devices in which light is not only carry informat ...
... role in deciding the workable layout of any network and can improve accuracy, speed, scalability, reliability, if chosen and implement best possible way. The speed of optical switches is necessarily has to match with currently new generation photonic devices in which light is not only carry informat ...
NIH Public Access
... in FDOCT images, details of the ciliary processes were not visible (Figure 2B). The gonioscopic appearance of the angle in the healthy subject shown in Figure 1 was open to the ciliary body band (grade IV by the Shaffer method; the angle between the iris and trabecular meshwork was 45°) and the 4-mm ...
... in FDOCT images, details of the ciliary processes were not visible (Figure 2B). The gonioscopic appearance of the angle in the healthy subject shown in Figure 1 was open to the ciliary body band (grade IV by the Shaffer method; the angle between the iris and trabecular meshwork was 45°) and the 4-mm ...
Get PDF - OSA Publishing
... converging lens has two foci: one on each side; i.e., a plane wave coming from one side focuses to the other, and vice versa. In stark contrast, a hyperbolic metalens works like a converging lens from one side but a diverging lens from the other. Similar to a recent “Janus device” [26] showing diffe ...
... converging lens has two foci: one on each side; i.e., a plane wave coming from one side focuses to the other, and vice versa. In stark contrast, a hyperbolic metalens works like a converging lens from one side but a diverging lens from the other. Similar to a recent “Janus device” [26] showing diffe ...
1 Janaky Narayanan PC 5213 AY 2004
... chemical structure, and finally by its molecular structure. For example, C2H6O is the chemical formula of ethyl alcohol. CH3-CH2-OH is the chemical structure of ethyl alcohol. The molecular structure is determined by the three dimensional arrangement of the atoms in space. The word “conformation” de ...
... chemical structure, and finally by its molecular structure. For example, C2H6O is the chemical formula of ethyl alcohol. CH3-CH2-OH is the chemical structure of ethyl alcohol. The molecular structure is determined by the three dimensional arrangement of the atoms in space. The word “conformation” de ...
Engineering Optics and Optical Techniques
... Farady’s Induction Law (1831) states that a time-varying magnetic flux passing through a closed conducting loop results in the generation of a current around the loop, i.e., The notion is that a time-varying magnetic field will have an electric field associate with it. This also shows that E and B m ...
... Farady’s Induction Law (1831) states that a time-varying magnetic flux passing through a closed conducting loop results in the generation of a current around the loop, i.e., The notion is that a time-varying magnetic field will have an electric field associate with it. This also shows that E and B m ...
PH 481
... In this experiment the birefringence of a material will be used to change the polarization of the laser beam. You will use a quarter-wave plate and a polarizer to build an optical isolator. This is a useful device that ensures that light is not reflected back into the laser. This has practical impor ...
... In this experiment the birefringence of a material will be used to change the polarization of the laser beam. You will use a quarter-wave plate and a polarizer to build an optical isolator. This is a useful device that ensures that light is not reflected back into the laser. This has practical impor ...
Presentation PPT
... If the defect of the structure is realized by removing the central capillary then guiding of electromagnetic wave in a PCF can be regarded as a modified total internal reflection mechanism. 2. Photonic bandgap mechanism: If the central defect is realized by inserting a central air capillary, which h ...
... If the defect of the structure is realized by removing the central capillary then guiding of electromagnetic wave in a PCF can be regarded as a modified total internal reflection mechanism. 2. Photonic bandgap mechanism: If the central defect is realized by inserting a central air capillary, which h ...
The Title Goes Here
... Laser-induced breakdown spectroscopy is a wellknown technique for rapid, in situ analysis of materials. It is a promising approach for standoff detection of potentially hazardous or difficult to access nuclear materials. LIBS employs an intense laser pulse to generate a plasma on the surface of a ta ...
... Laser-induced breakdown spectroscopy is a wellknown technique for rapid, in situ analysis of materials. It is a promising approach for standoff detection of potentially hazardous or difficult to access nuclear materials. LIBS employs an intense laser pulse to generate a plasma on the surface of a ta ...
Lesson-2 Light Microscopy
... Microscopes are instruments designed to produce magnified visual or photographic images of objects too small to be seen with the naked eye. The microscope must accomplish three tasks: produce a magnified image of the specimen, separate the details in the image, and render the details visible to the ...
... Microscopes are instruments designed to produce magnified visual or photographic images of objects too small to be seen with the naked eye. The microscope must accomplish three tasks: produce a magnified image of the specimen, separate the details in the image, and render the details visible to the ...
Needle-based reflection refractometry of scattering samples using
... direct and computed tomography techniques to form cross-sectional refractive index images.[16-18] In addition to precise pathlength sensing, coherent techniques may also be used map reflection amplitudes, a capability that enables the implementation of reflection refractometry techniques. Refractome ...
... direct and computed tomography techniques to form cross-sectional refractive index images.[16-18] In addition to precise pathlength sensing, coherent techniques may also be used map reflection amplitudes, a capability that enables the implementation of reflection refractometry techniques. Refractome ...
Barium Ions for Quantum Computation
... need to be covered and so only three modulation frequencies are used - 614, 539, and 394 MHz. For the blue, modulation is introduced with frequency equal to the ground state hyperfine splitting, and the carrier is set such that all ground states are excited only into the P1/2 (F=2) manifold, see Fig ...
... need to be covered and so only three modulation frequencies are used - 614, 539, and 394 MHz. For the blue, modulation is introduced with frequency equal to the ground state hyperfine splitting, and the carrier is set such that all ground states are excited only into the P1/2 (F=2) manifold, see Fig ...
Dunlap Institute Summer School: Fourier Transform Spectroscopy Lab
... A beam of light can be modelled as a wave of oscillating electric and magnetic fields. When two beams of light meet in space, these fields add according to the principle of superposition. At each point in space, the resultant electric and magnetic fields are the vector sum of the fields of the separ ...
... A beam of light can be modelled as a wave of oscillating electric and magnetic fields. When two beams of light meet in space, these fields add according to the principle of superposition. At each point in space, the resultant electric and magnetic fields are the vector sum of the fields of the separ ...
Note
... • The observed profile is the convolution of the true line profile with the instrument profile • For high S/N ratio data, Fourier techniques can be used to back out the IP from a spectrum to recover some of the resolution. ...
... • The observed profile is the convolution of the true line profile with the instrument profile • For high S/N ratio data, Fourier techniques can be used to back out the IP from a spectrum to recover some of the resolution. ...
total internal reflection
... When a ray of light enters a medium where its speed decreases, it is bent toward the normal. When a ray of light enters a medium where its speed increases, it is bent away from the normal. There is no change in direction of propagation if there is no change in index of refraction. The greater the ch ...
... When a ray of light enters a medium where its speed decreases, it is bent toward the normal. When a ray of light enters a medium where its speed increases, it is bent away from the normal. There is no change in direction of propagation if there is no change in index of refraction. The greater the ch ...
Synopsis by TAYABALY Kashmira
... Fewer coating materials are available in UV than in IR system and even fewer for wavelengths under 250 nm. In this range only band pass filters are feasible but they are difficult and expensive to make. Indeed, because the temperature at which the coating is applied is high, it generates mechanical ...
... Fewer coating materials are available in UV than in IR system and even fewer for wavelengths under 250 nm. In this range only band pass filters are feasible but they are difficult and expensive to make. Indeed, because the temperature at which the coating is applied is high, it generates mechanical ...
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.