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Optics and Quantum Electronics—J. G. Fujimoto, H. A. Haus, E. P. Ippen, F. X. Kärtner
... Novel Low-Coherence Light Sources The need for simple, robust sources of broadband light exists in fields such as spectroscopy as well as biomedical imaging applications such as Optical Coherence Tomography (OCT) [1-3]. The achievable longitudinal resolution is inversely related to the bandwidth of ...
... Novel Low-Coherence Light Sources The need for simple, robust sources of broadband light exists in fields such as spectroscopy as well as biomedical imaging applications such as Optical Coherence Tomography (OCT) [1-3]. The achievable longitudinal resolution is inversely related to the bandwidth of ...
OPTI 517 Image Quality
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
... Encircled or ensquared energy is the ratio of the energy in the PSF that is collected by a single circular or square detector to the total amount of energy that reaches the image plane from that object point – This is a popular metric for system engineers who, reasonably enough, want a certain amoun ...
Correction of ocular and atmospheric wavefronts: a
... high spatial frequency phase errors due to the large size of the actuator influence functions. An alternative approach is microelectromechanical systems (MEMS) mirrors which can have a very large number of actuators having relatively localized influence functions. Boston Micromachines has commercial ...
... high spatial frequency phase errors due to the large size of the actuator influence functions. An alternative approach is microelectromechanical systems (MEMS) mirrors which can have a very large number of actuators having relatively localized influence functions. Boston Micromachines has commercial ...
Computer simulation of wave propagation through turbulent media Davis, Charles A.
... recasts the Huygens-Fresnel solution into a form utilizing fast Fourier transforms easily implemented in a computer simulation. It then summarizes the Rytov-Tatarski solution to the scalar wave equation which used first order perturbation theory and statistical techniques to describe the spatial var ...
... recasts the Huygens-Fresnel solution into a form utilizing fast Fourier transforms easily implemented in a computer simulation. It then summarizes the Rytov-Tatarski solution to the scalar wave equation which used first order perturbation theory and statistical techniques to describe the spatial var ...
PDF Edition - Review of Ophthalmology
... in real life situations and provide a high-tech refraction experience that the patient is sure to remember. Topcon Medical Systems ▲ (800) 223-1130 www.topconmedical.com/products/exam5000.htm ...
... in real life situations and provide a high-tech refraction experience that the patient is sure to remember. Topcon Medical Systems ▲ (800) 223-1130 www.topconmedical.com/products/exam5000.htm ...
ELEC425 lab 5
... power coupled across to the second fiber divided by the total power through the coupler (P2/P2 + P4). Typical coupling ratios for commercially available devices are 3 (50%), 6 (25%), and l0 dB (10%). The excess loss is defined as the total output power divided by the total input power ((P2 + P4)/P1) ...
... power coupled across to the second fiber divided by the total power through the coupler (P2/P2 + P4). Typical coupling ratios for commercially available devices are 3 (50%), 6 (25%), and l0 dB (10%). The excess loss is defined as the total output power divided by the total input power ((P2 + P4)/P1) ...
Full-text PDF
... which gives h , Dn ; jns2vd 2 nsvdj. As follows from our results, strong competition between x s2d and x s3d nonlinearities is expected for jxj . 1022 , which (for materials with m , 100) gives Dn . 1024 . In the opposite case, i.e., for jxj # 1022 , the inf luence of x s3d nonlinearity on solitons ...
... which gives h , Dn ; jns2vd 2 nsvdj. As follows from our results, strong competition between x s2d and x s3d nonlinearities is expected for jxj . 1022 , which (for materials with m , 100) gives Dn . 1024 . In the opposite case, i.e., for jxj # 1022 , the inf luence of x s3d nonlinearity on solitons ...
Coupling Efficiency and Alignment Sensitivity of Single
... The sponsoring agency is the Ballistic Missile Defense Advanced Technology Center Huntsville, Alabama. The contract monitor is Mr.. Buster E. Kelley. Preparation of the thesis paper was performed under the direction of the Graduate Studies Program of the College of Engineering of the University of C ...
... The sponsoring agency is the Ballistic Missile Defense Advanced Technology Center Huntsville, Alabama. The contract monitor is Mr.. Buster E. Kelley. Preparation of the thesis paper was performed under the direction of the Graduate Studies Program of the College of Engineering of the University of C ...
Optical properties scattering - IMT
... Unless the light beam is propagating right into your eye or is scattered into it, you won t see it. This is true for laser light and flashlights. This is due to the facts that air is very sparse (N is relatively small), air is also not a strong scatterer, and the scattering is incoherent. This eye s ...
... Unless the light beam is propagating right into your eye or is scattered into it, you won t see it. This is true for laser light and flashlights. This is due to the facts that air is very sparse (N is relatively small), air is also not a strong scatterer, and the scattering is incoherent. This eye s ...
Optic Disc Drusen
... Factors leading to the development of ODD and to subsequent visual pathology are incompletely understood. Tso postulated abnormal axonal metabolism leading to the deposition of calcium crystals in mitochondria, subsequent axonal disruption, and extrusion of mitochondria into the extracellular space, ...
... Factors leading to the development of ODD and to subsequent visual pathology are incompletely understood. Tso postulated abnormal axonal metabolism leading to the deposition of calcium crystals in mitochondria, subsequent axonal disruption, and extrusion of mitochondria into the extracellular space, ...
Antireflective Coatings
... wavelength can be available by our company) and generally used in single wavelength laser cavity where the lowest cavity loss at a center wavelength is essential. We can provide such coating with center wavelength from 250nm to 2200nm according to customer’s special inquiry. When selecting a suitabl ...
... wavelength can be available by our company) and generally used in single wavelength laser cavity where the lowest cavity loss at a center wavelength is essential. We can provide such coating with center wavelength from 250nm to 2200nm according to customer’s special inquiry. When selecting a suitabl ...
Chapter 4 Optical Resonator
... • 2.2 Planar Mirror Resonators – Resonator Modes – The Resonator as a Spectrum Analyzer – Two- and Three-Dimensional Resonators • 2.3 Gaussian waves and its characteristics – The Gaussian beam ...
... • 2.2 Planar Mirror Resonators – Resonator Modes – The Resonator as a Spectrum Analyzer – Two- and Three-Dimensional Resonators • 2.3 Gaussian waves and its characteristics – The Gaussian beam ...
Congenital Nasolacrimal Duct Obstruction
... them. At the zero point in the middle and at each points of intersection of the 15 degree and 30 degree lines there was a red dot. The red dots formed an inner square of eight dots and an outer square of sixteen dots. A pointer or indicator was a junction of three green cords knotted to form Y. The ...
... them. At the zero point in the middle and at each points of intersection of the 15 degree and 30 degree lines there was a red dot. The red dots formed an inner square of eight dots and an outer square of sixteen dots. A pointer or indicator was a junction of three green cords knotted to form Y. The ...
Two-Color Two-Photon Excitation Using Femtosecond Laser Pulses
... extend the wavelength range where the Ti:Sa laser can be used under retention of all advantages of two-photon excitation. According to theoretical considerations, spatial resolution13 and penetration ability,14 depending on the microscopical setup, are expected to improve for 2c2p excitation compare ...
... extend the wavelength range where the Ti:Sa laser can be used under retention of all advantages of two-photon excitation. According to theoretical considerations, spatial resolution13 and penetration ability,14 depending on the microscopical setup, are expected to improve for 2c2p excitation compare ...
LASIK for Hyperopia Using an Aberration
... Mainly, there are two different centration references that can be detected easily and measured with currently available technologies. Pupil centration may be the most extensively used centration method for several reasons. The pupil boundaries are the standard references observed by the eye-tracking ...
... Mainly, there are two different centration references that can be detected easily and measured with currently available technologies. Pupil centration may be the most extensively used centration method for several reasons. The pupil boundaries are the standard references observed by the eye-tracking ...
Optical phase conjugation: principles, techniques, and applications
... 7.3.3. Second-order nonlinear waveguide systems . . . . . . . . . References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... 7.3.3. Second-order nonlinear waveguide systems . . . . . . . . . References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
CHIRAL POLYMER PHOTODETECTOR
... A thesis submitted to the Department of Chemistry In conformity with the requirements for the degree of Master of Science ...
... A thesis submitted to the Department of Chemistry In conformity with the requirements for the degree of Master of Science ...
Non-Magneto-Optic Waveguide Isolator Namkhun Srisanit , Non-member
... find its polarization direction rotated as a right-hand screw, while light traveling against the field is rotated in the opposite direction. This rotation is similar to that experienced in optically active crystals with one important difference: the magnetic medium experiences right- and left-hand rota ...
... find its polarization direction rotated as a right-hand screw, while light traveling against the field is rotated in the opposite direction. This rotation is similar to that experienced in optically active crystals with one important difference: the magnetic medium experiences right- and left-hand rota ...
Optical contrast and clarity of graphene on an
... 共graphene in this paper兲 on an arbitrary substrate with an original reflection coefficient r, which becomes r⬘ after depositing the film. We find that r⬘ is determined solely by r and by the optical properties of the film. The details of the substrate structure are not required to derive r⬘. This fi ...
... 共graphene in this paper兲 on an arbitrary substrate with an original reflection coefficient r, which becomes r⬘ after depositing the film. We find that r⬘ is determined solely by r and by the optical properties of the film. The details of the substrate structure are not required to derive r⬘. This fi ...
- City Research Online
... disagreement (discordance) at a high spatial resolution (for example, at each VF test location). Firstly, the analyses suffer from considerable data reduction by summarizing the structural image into a few discrete measurements (for instance, the sectoral RNFLT derived from the GDxVCC [Carl Zeiss Me ...
... disagreement (discordance) at a high spatial resolution (for example, at each VF test location). Firstly, the analyses suffer from considerable data reduction by summarizing the structural image into a few discrete measurements (for instance, the sectoral RNFLT derived from the GDxVCC [Carl Zeiss Me ...
Print this article - Indian Journal of Science and Technology
... ZnO nanostructures, sensitivities of the sensors have improved further, as shown in Table 2. It shows that sensitivity of tapered POF has increased from 0.0222 mV/% to 0.176 mV/% and sensitivity of tapered silica has improved from 0.0011 mV/% to 00.38 mV/%. However, tapered POF still performed bette ...
... ZnO nanostructures, sensitivities of the sensors have improved further, as shown in Table 2. It shows that sensitivity of tapered POF has increased from 0.0222 mV/% to 0.176 mV/% and sensitivity of tapered silica has improved from 0.0011 mV/% to 00.38 mV/%. However, tapered POF still performed bette ...
01.01.2001 – 31.03.2003 - Archiv Physik
... magnetization jumps due to independent magnons in frustrated quantum spin lattices, Phys. Rev. Lett. 88 (2002) 167207 H.-J. Schmidt, J. Schnack, Partition functions and symmetric polynomials, Am. J. Phys. 70 (2002) 53-57 J. Schnack, H.-J. Schmidt, J. Richter, J. Schulenburg, Independent magnon state ...
... magnetization jumps due to independent magnons in frustrated quantum spin lattices, Phys. Rev. Lett. 88 (2002) 167207 H.-J. Schmidt, J. Schnack, Partition functions and symmetric polynomials, Am. J. Phys. 70 (2002) 53-57 J. Schnack, H.-J. Schmidt, J. Richter, J. Schulenburg, Independent magnon state ...
Ultrasensitive absorption spectroscopy with a high
... situation is clearly the desired one, in which the cavity resonances are effectively suppressed. In this regime, the cavity transmission is frequency independent and is therefore determined solely by the roundtrip cavity loss. The present approach offers several additional advantages. Simply adding ...
... situation is clearly the desired one, in which the cavity resonances are effectively suppressed. In this regime, the cavity transmission is frequency independent and is therefore determined solely by the roundtrip cavity loss. The present approach offers several additional advantages. Simply adding ...
Optical coherence tomography
![](https://commons.wikimedia.org/wiki/Special:FilePath/Nibib_030207_105309_sarcoma.jpg?width=300)
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.