Journal of Modern Optics Slow and fast light: fundamentals and
... Slow light based on this process was first observed in optical fibers at a wavelength of 1550 nm by Song et al. [28] and Okawachi et al. [10]. A limitation to the usefulness of this process is that the Brillouin linewidth for typical optical fibers is only 30 to 50 MHz. This linewidth sets the chara ...
... Slow light based on this process was first observed in optical fibers at a wavelength of 1550 nm by Song et al. [28] and Okawachi et al. [10]. A limitation to the usefulness of this process is that the Brillouin linewidth for typical optical fibers is only 30 to 50 MHz. This linewidth sets the chara ...
Subwavelength-diameter silica wires for low
... method. First, we use a flame to draw a silica fibre to a micrometre-diameter wire. Second, to obtain a steady temperature distribution in the drawing region while further reducing the wire diameter, we use a tapered sapphire fibre with a tip diameter of about 80 mm to absorb the thermal energy from ...
... method. First, we use a flame to draw a silica fibre to a micrometre-diameter wire. Second, to obtain a steady temperature distribution in the drawing region while further reducing the wire diameter, we use a tapered sapphire fibre with a tip diameter of about 80 mm to absorb the thermal energy from ...
Single-frequency continuous-wave optical parametric oscillator
... Figure 2 summarizes the emission range and output powers. The total emission range is covered by the frequency-doubled idler (550–770 nm, up to 70 mW), the signal (656–1035 nm, up to 60 mW), and the idler (1096– 2830 nm, up to 800 mW). In addition, up to 1.25 mW of blue light is generated by non-pha ...
... Figure 2 summarizes the emission range and output powers. The total emission range is covered by the frequency-doubled idler (550–770 nm, up to 70 mW), the signal (656–1035 nm, up to 60 mW), and the idler (1096– 2830 nm, up to 800 mW). In addition, up to 1.25 mW of blue light is generated by non-pha ...
Lecture 11
... It seems amazing that a solution to the wave equation can be propagated using classical rules. But really what this is saying is that, in some sense, wave phenomena are absent in the paraxial approximation. As we will see, this transformation rule applies in more general situations as long as the pa ...
... It seems amazing that a solution to the wave equation can be propagated using classical rules. But really what this is saying is that, in some sense, wave phenomena are absent in the paraxial approximation. As we will see, this transformation rule applies in more general situations as long as the pa ...
Reflection of X-rays with change of frequency
... As in the case of light, however, we are not restricted to considering stratifications which are identifiable with sound-waves, and may extend the application ofequations(I), (2) and (3) in the X-ray region to any type of coherent pulsation capable of giving periodic stratifications of the electron ...
... As in the case of light, however, we are not restricted to considering stratifications which are identifiable with sound-waves, and may extend the application ofequations(I), (2) and (3) in the X-ray region to any type of coherent pulsation capable of giving periodic stratifications of the electron ...
Optics6 - Cbsephysicstutorials
... Let I1 and I2 be the intensity of the two light waves. Their resultant intensities can be obtained as: ...
... Let I1 and I2 be the intensity of the two light waves. Their resultant intensities can be obtained as: ...
Brightfield contrast methods
... With bias retardation there is a systematic phase difference introduced by Wollaston II, such that light in "a" is already elliptically polarized. Now the difference between "b" and "c" is detected by the analyzer. ...
... With bias retardation there is a systematic phase difference introduced by Wollaston II, such that light in "a" is already elliptically polarized. Now the difference between "b" and "c" is detected by the analyzer. ...
Problem Set 1 (due 2/21/06)
... 2. How do you collect a fluorescence emission spectrum? A fluorescence excitation spectrum? An absorption spectrum? Which two most closely resemble each other? A fluorescence emission spectrum is collected by illuminating the sample with a single wavelength and collecting a scan of the intensities o ...
... 2. How do you collect a fluorescence emission spectrum? A fluorescence excitation spectrum? An absorption spectrum? Which two most closely resemble each other? A fluorescence emission spectrum is collected by illuminating the sample with a single wavelength and collecting a scan of the intensities o ...
Optics of the Human Eye
... humour The posterior chamber between the iris, the ciliary body and the lens, which contains aqueous humour The Th vitreous i chamber h b between the lens and the retina, which contains a transparent gel called the vitreous humour ...
... humour The posterior chamber between the iris, the ciliary body and the lens, which contains aqueous humour The Th vitreous i chamber h b between the lens and the retina, which contains a transparent gel called the vitreous humour ...
Nuclear magnetic resonance microscopic ocular imaging for
... of early-stage localized cataractous change was limited by the large size of the picture element (pixel) compared to the size of precataractous tissue. Since the image intensity in each digitized pixel is the integrated spin signal within the unit volume, if the pixel size or resolution is not suffi ...
... of early-stage localized cataractous change was limited by the large size of the picture element (pixel) compared to the size of precataractous tissue. Since the image intensity in each digitized pixel is the integrated spin signal within the unit volume, if the pixel size or resolution is not suffi ...
File - SPHS Devil Physics
... unpolarized light passing through a polarizer is equal to ½ no matter what the orientation of the polarizing film ...
... unpolarized light passing through a polarizer is equal to ½ no matter what the orientation of the polarizing film ...
Light Field Microscopy - Stanford Computer Graphics Laboratory
... can produce a set of cross sections, which can be visualized using volume rendering. In this paper, we demonstrate a prototype light field microscope (LFM), analyze its optical performance, and show perspective views, focal stacks, and reconstructed volumes for a variety of biological specimens. We ...
... can produce a set of cross sections, which can be visualized using volume rendering. In this paper, we demonstrate a prototype light field microscope (LFM), analyze its optical performance, and show perspective views, focal stacks, and reconstructed volumes for a variety of biological specimens. We ...
EFFECT OF TEMPERATURE ON THE REFRACTIVE INDICES AND
... The liquid crystal was encapsulated in a cell with plane-parallel glass plates, prepared to provide a planar and uniaxial alignment of the molecules. The cell with liquid crystal was thermostated using a special electric oven and temperature was measured with a digital thermometer with accuracy of 0 ...
... The liquid crystal was encapsulated in a cell with plane-parallel glass plates, prepared to provide a planar and uniaxial alignment of the molecules. The cell with liquid crystal was thermostated using a special electric oven and temperature was measured with a digital thermometer with accuracy of 0 ...
Wave Optics Theory and 3-D Deconvolution for the Light Field
... sub-pixel movements. During each acquisition, high frequency information from the scene is aliased and recorded as low frequency image features in a way that is uniquely determined by the camera position. If the camera’s trajectory can be accurately estimated, then the different, aliased copies of t ...
... sub-pixel movements. During each acquisition, high frequency information from the scene is aliased and recorded as low frequency image features in a way that is uniquely determined by the camera position. If the camera’s trajectory can be accurately estimated, then the different, aliased copies of t ...
SM - AIP FTP Server
... 1) Effect of the fluctuation of gap distance between disk and fibre. The results presented in the article rely on the assumption that a mechanical displacement of the disk causes a change in the Whispering Gallery Mode (WGM) optical resonance via the change of the disk resonator geometry. However ...
... 1) Effect of the fluctuation of gap distance between disk and fibre. The results presented in the article rely on the assumption that a mechanical displacement of the disk causes a change in the Whispering Gallery Mode (WGM) optical resonance via the change of the disk resonator geometry. However ...
Visual Stimulation of Retinal Explants on a Standard
... not just for interrogating visual processing in the retina itself, but also for understanding general principles of signal processing and neural computations performed throughout the nervous system. One of the key advantages of the retina as a model circuit is the ease with which physiological stimu ...
... not just for interrogating visual processing in the retina itself, but also for understanding general principles of signal processing and neural computations performed throughout the nervous system. One of the key advantages of the retina as a model circuit is the ease with which physiological stimu ...
Digital High-Speed Optical Systems Interconnections for
... Much of the COSt and complexity in telecommunications syst~rns result because the received. signals are at low Ims. which is a consequence of the loss that results when repeaters are spaced at maximum distances. With the shon-distance and small.signal-loss characteristics of most interconnection app ...
... Much of the COSt and complexity in telecommunications syst~rns result because the received. signals are at low Ims. which is a consequence of the loss that results when repeaters are spaced at maximum distances. With the shon-distance and small.signal-loss characteristics of most interconnection app ...
Generation of radially and azimuthally polarized light by optical
... On the other hand, cylindrical vector beams, or laser beams with cylindrical symmetry in polarization have attracted considerable research recently due to their interesting properties and potential applications [30]. For example, radial polarization is optimal for laser machining [31,32]. The laser ...
... On the other hand, cylindrical vector beams, or laser beams with cylindrical symmetry in polarization have attracted considerable research recently due to their interesting properties and potential applications [30]. For example, radial polarization is optimal for laser machining [31,32]. The laser ...
Investigation of nanoscale structural alterations of cell nucleus as an
... On the other hand, the nanoscale structural properties, also referred to as “nano-morphology”, show the potential to become a new class of morphological markers for earlier and more accurate cancer diagnosis and prognosis. It is well recognized that cancer is a complex disease involving early change ...
... On the other hand, the nanoscale structural properties, also referred to as “nano-morphology”, show the potential to become a new class of morphological markers for earlier and more accurate cancer diagnosis and prognosis. It is well recognized that cancer is a complex disease involving early change ...
Lecture 3
... Scanning Confocal Optical Microscopy Confocal microscopy is an optical imaging technique used to increase optical resolution and contrast of a micrograph by adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. Scanning confocal optical microscopy (SCOM) ...
... Scanning Confocal Optical Microscopy Confocal microscopy is an optical imaging technique used to increase optical resolution and contrast of a micrograph by adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. Scanning confocal optical microscopy (SCOM) ...
CC_A3_C2_photo2_old
... • Replace the mercury vapor lamp an excimer laser source with shorter wavelength emission – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
... • Replace the mercury vapor lamp an excimer laser source with shorter wavelength emission – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
File - Mrs. Hille`s FunZone
... tube generates visible light • type of gas determines color of light ...
... tube generates visible light • type of gas determines color of light ...
Quantum Phase Noise and Field Correlation in Single Frequency
... or discriminated by direct interferometric detection[32], [ 3 3 ] . The laser phase is also a determining parameter for incoherent systems in which a spurious coherent mixing produces a phase to intensity noise conversion: this is for example a case for the square law detection of a beam which is fi ...
... or discriminated by direct interferometric detection[32], [ 3 3 ] . The laser phase is also a determining parameter for incoherent systems in which a spurious coherent mixing produces a phase to intensity noise conversion: this is for example a case for the square law detection of a beam which is fi ...
VioBio Lab ARVO Itinerary Planner and Abstract Book
... Purpose: To compare the spherical aberration of cynomolgus monkey lenses measured with a laser ray tracing (LRT) system and the spherical aberration estimated from numerical ray-trace through a model of the lens with the measured lens shape and a reconstructed gradient refractive index (GRIN). Metho ...
... Purpose: To compare the spherical aberration of cynomolgus monkey lenses measured with a laser ray tracing (LRT) system and the spherical aberration estimated from numerical ray-trace through a model of the lens with the measured lens shape and a reconstructed gradient refractive index (GRIN). Metho ...
M. Tech in Optoelectronics and Laser Technology
... Choose a current topic of Optoelectronics & Laser Technology. Submit one page Abstract of the selected topic along with copies of minimum two journal reference and get the topic approved by one of the members of staff in charge of the seminar. The Abstract should be concise and direct. It should cle ...
... Choose a current topic of Optoelectronics & Laser Technology. Submit one page Abstract of the selected topic along with copies of minimum two journal reference and get the topic approved by one of the members of staff in charge of the seminar. The Abstract should be concise and direct. It should cle ...
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.