Material Properties - CVI Melles Griot 2009 Technical Guide, Vol 2
... of incidence will be different at the two surfaces; therefore, t1 and t2 will generally be unequal. Distance tc, which becomes the surface-to-surface distance along a particular ray, must be determined by ray tracing. It is necessary to account separately for the s- and p-planes of polarization, and ...
... of incidence will be different at the two surfaces; therefore, t1 and t2 will generally be unequal. Distance tc, which becomes the surface-to-surface distance along a particular ray, must be determined by ray tracing. It is necessary to account separately for the s- and p-planes of polarization, and ...
Optical Fiber Amplifiers
... the following pieces in turn between the white light source and the OSA. Set the span from 500nm to 1750nm, the resolution to the minimum without causing an error (10nm), the average to 3, and remember to save the results of each component to disk. • Any piece of connecting fiber. In addition to sho ...
... the following pieces in turn between the white light source and the OSA. Set the span from 500nm to 1750nm, the resolution to the minimum without causing an error (10nm), the average to 3, and remember to save the results of each component to disk. • Any piece of connecting fiber. In addition to sho ...
Properties of a 4Pi confocal fluorescence microscope
... has a diameter somewhat larger than A/2. If this ideal illumination is approached and if two microscope objectives of high numerical aperture are used, a fluorescent sample can be illuminated coherently from both sides, and the fluorescence emission is also detected on both sides. This arrangement i ...
... has a diameter somewhat larger than A/2. If this ideal illumination is approached and if two microscope objectives of high numerical aperture are used, a fluorescent sample can be illuminated coherently from both sides, and the fluorescence emission is also detected on both sides. This arrangement i ...
fourier optics - The Institute of Optics
... includes of course the optical front-end, an array-type of photodetector, the computing system, and the output display or function. Fourier optics is the field of physics that encompasses the study of light at visible wavelengths but including infrared and ultraviolet portions of the electromagnetic ...
... includes of course the optical front-end, an array-type of photodetector, the computing system, and the output display or function. Fourier optics is the field of physics that encompasses the study of light at visible wavelengths but including infrared and ultraviolet portions of the electromagnetic ...
Noninvasive Visualization and Analysis of Parafoveal Capillaries in
... variation.2 The FAZ has been well characterized and is of important clinical significance in a number of different diseases, including diabetes.3 There are two key challenges that must be addressed when performing optical imaging of the retinal microcirculation: low capillary contrast and aberration ...
... variation.2 The FAZ has been well characterized and is of important clinical significance in a number of different diseases, including diabetes.3 There are two key challenges that must be addressed when performing optical imaging of the retinal microcirculation: low capillary contrast and aberration ...
Visual Acuity Is Correlated with the Area of the Foveal Avascular
... scans per second, using a light source centered on 840 nm and a bandwidth of 45 nm. Each OCTA volume contains 304'304 A-scans with 2 consecutive B-scans captured at each fixed position before proceeding to the next sampling location. The scan area was ...
... scans per second, using a light source centered on 840 nm and a bandwidth of 45 nm. Each OCTA volume contains 304'304 A-scans with 2 consecutive B-scans captured at each fixed position before proceeding to the next sampling location. The scan area was ...
Jens Prescher, Establishment and Optimization of Super
... Microscopy (STORM) or Photoactivated Localization Microscopy (PALM) [8]. The latter two will be discussed in detail in this thesis. On the contrary, a great number of other, non-optical techniques were presented that offer an even higher resolution than these high-resolution optical microscopes. Exa ...
... Microscopy (STORM) or Photoactivated Localization Microscopy (PALM) [8]. The latter two will be discussed in detail in this thesis. On the contrary, a great number of other, non-optical techniques were presented that offer an even higher resolution than these high-resolution optical microscopes. Exa ...
Effect of bright light on the transient changes of choroidal thickness
... to 4PM and kept under “normal” laboratory light during the remaining time of the light phase (500 lux, 8AM to 6PM, N=14) for 5 days. In contrast, a control group was kept in “normal light” (500 lux) during the entire light phase (N=14). Choroidal thickness in the posterior pole of right eyes was mea ...
... to 4PM and kept under “normal” laboratory light during the remaining time of the light phase (500 lux, 8AM to 6PM, N=14) for 5 days. In contrast, a control group was kept in “normal light” (500 lux) during the entire light phase (N=14). Choroidal thickness in the posterior pole of right eyes was mea ...
Light Field Editing Based on Reparameterization
... kd-tree in the affinity space, which allows them handling large datasets. However, they scale poorly with the number of dimensions. Other methods propose to increase the efficiency and generality of the propagation by posing as different energy minimization systems: Li et al. [11] reformulate the propaga ...
... kd-tree in the affinity space, which allows them handling large datasets. However, they scale poorly with the number of dimensions. Other methods propose to increase the efficiency and generality of the propagation by posing as different energy minimization systems: Li et al. [11] reformulate the propaga ...
Quadrature phase-shift error analysis using a homodyne laser
... Detection methods based on two or more signals in phase quadrature allow nano-resolution and high-dynamic-range displacement measurements with a constant sensitivity [1]. The quadrature signals can be obtained in various laser interferometers [2–5] as well as in other types of displacement-measuring ...
... Detection methods based on two or more signals in phase quadrature allow nano-resolution and high-dynamic-range displacement measurements with a constant sensitivity [1]. The quadrature signals can be obtained in various laser interferometers [2–5] as well as in other types of displacement-measuring ...
Characterization of novel microsphere chain fiber optic tips for
... Some current ophthalmic surgical techniques rely on tedious mechanical dissection of tissue layers. In this study, chains of sapphire microspheres integrated into a hollow waveguide distal tip are used for erbium:YAG laser ablation studies in contact mode with ophthalmic tissues, ex vivo. The laser’ ...
... Some current ophthalmic surgical techniques rely on tedious mechanical dissection of tissue layers. In this study, chains of sapphire microspheres integrated into a hollow waveguide distal tip are used for erbium:YAG laser ablation studies in contact mode with ophthalmic tissues, ex vivo. The laser’ ...
Optical solitons and its applications Final report Physics 568 (Nonlinear optics)
... optical axes using a polarization beam splitter. Fig. 5 shows the results of ultrafast all-optical switching using pulse trapping. The 0.67 THz ultrahigh repetition rate signal pulse train consists of four pulses with temporal separation of 1.5 ps. The respective energies of signal pulses and contro ...
... optical axes using a polarization beam splitter. Fig. 5 shows the results of ultrafast all-optical switching using pulse trapping. The 0.67 THz ultrahigh repetition rate signal pulse train consists of four pulses with temporal separation of 1.5 ps. The respective energies of signal pulses and contro ...
Open Frame CD/DVD Reader
... and plane wave fronts exist only at a particular point. The reason for the failure of geometrical optics is the fact that it has been introduced at a time where the wave character of light was still as unknown as the possibility to describe its behaviour by Maxwell‘s equations. To describe the propa ...
... and plane wave fronts exist only at a particular point. The reason for the failure of geometrical optics is the fact that it has been introduced at a time where the wave character of light was still as unknown as the possibility to describe its behaviour by Maxwell‘s equations. To describe the propa ...
Mid Infrared digital holography and Terahertz imaging
... thus, in practice, one can always think of being in a case, more or less marked, of scattering object; what changes is just the percentage of scattered radiation that ends up in the recording device. The object beam and the reference beam usually travel different paths but, in order to obtain interf ...
... thus, in practice, one can always think of being in a case, more or less marked, of scattering object; what changes is just the percentage of scattered radiation that ends up in the recording device. The object beam and the reference beam usually travel different paths but, in order to obtain interf ...
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... it seems that, the maximum growth of MI, which is characterized by a strong 2D breakup, shifts to a lower spatial frequency as the coherence increases. This feature is not expected from the 1D theory of incoherent MI, as has been addressed recently in the study of 1D incoherent MI without seeding no ...
... it seems that, the maximum growth of MI, which is characterized by a strong 2D breakup, shifts to a lower spatial frequency as the coherence increases. This feature is not expected from the 1D theory of incoherent MI, as has been addressed recently in the study of 1D incoherent MI without seeding no ...
Photoinduced handedness switching in terahertz chiral metamolecules ARTICLE
... chirality. Similar approaches of incorporating semiconductors into subwavelength resonators have been used to actively manipulate the electromagnetic resonances of metamaterials by photoexcitation or electric bias23–26. The chirality switching in the above terahertz metamaterials was experimentally ...
... chirality. Similar approaches of incorporating semiconductors into subwavelength resonators have been used to actively manipulate the electromagnetic resonances of metamaterials by photoexcitation or electric bias23–26. The chirality switching in the above terahertz metamaterials was experimentally ...
T. J. Kippenberg, , 1172 (2008); DOI: 10.1126/science.1156032
... displacement measurement, two fundamental sources of imprecision Fig. 2. (A) Dynamic back-action results from the coupling of the mechanical oscillator period and creates an exist (Fig. 1C). First, there is the motion to the fluctuations of the intracavity field amplitude (da), which occurs effectiv ...
... displacement measurement, two fundamental sources of imprecision Fig. 2. (A) Dynamic back-action results from the coupling of the mechanical oscillator period and creates an exist (Fig. 1C). First, there is the motion to the fluctuations of the intracavity field amplitude (da), which occurs effectiv ...
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... expert pathologists since many benign lesions or common benign inflammatory conditions resemble malignancies upon visual investigation [1,7,8]. Hence, there is a need to develop new strategies for an accurate and precise diagnosis of melanoma. The tremendous progress in optical, electronic and compu ...
... expert pathologists since many benign lesions or common benign inflammatory conditions resemble malignancies upon visual investigation [1,7,8]. Hence, there is a need to develop new strategies for an accurate and precise diagnosis of melanoma. The tremendous progress in optical, electronic and compu ...
Full text - Ward Ober Lab
... In contrast, we see that the 3D multifocal plane fundamental limit exhibits a different behavior. Here, the multifocal plane 3D fundamental limit of x0 is asymmetric about z0 = 0 and remains more or less constant for a range of defocus distances. In particular, for a given focal plane spacing ∆zf , t ...
... In contrast, we see that the 3D multifocal plane fundamental limit exhibits a different behavior. Here, the multifocal plane 3D fundamental limit of x0 is asymmetric about z0 = 0 and remains more or less constant for a range of defocus distances. In particular, for a given focal plane spacing ∆zf , t ...
Measurements of the compressive properties of scleral tissue.
... in stress to the associated change in strain and, therefore, represents a measure of the "strength" of a material. When the elastic modulus is high, little deformation occurs with a small increment in stress. The same stress increment will produce large deformations when the elastic modulus is small ...
... in stress to the associated change in strain and, therefore, represents a measure of the "strength" of a material. When the elastic modulus is high, little deformation occurs with a small increment in stress. The same stress increment will produce large deformations when the elastic modulus is small ...
Detection of Fluorescence from Single Molecules
... the sample plane. This focused light will be used for fluorescence excitation. For this alignment procedure, you will place a collimated light source and two mirrors behind the microscope, directing the light toward the microscope objective. You will coarsely align these three optical elements so th ...
... the sample plane. This focused light will be used for fluorescence excitation. For this alignment procedure, you will place a collimated light source and two mirrors behind the microscope, directing the light toward the microscope objective. You will coarsely align these three optical elements so th ...
Paper - Andreas Geiger
... by modern benchmarks [1, 9, 17] and for many applications, continuous methods typically rely on image pyramids [7]. Unfortunately, this heuristic is prone to local minima as texture details and fine structures vanish at small scales. As a consequence, methods leveraging sparse feature correspondence ...
... by modern benchmarks [1, 9, 17] and for many applications, continuous methods typically rely on image pyramids [7]. Unfortunately, this heuristic is prone to local minima as texture details and fine structures vanish at small scales. As a consequence, methods leveraging sparse feature correspondence ...
Objective optical assessment of tear-film quality dynamics in normal
... the scattered light.6 The changes in ocular aberrations and scatter degrade the retinal image quality. The influence of the tear film on the retinal image might be especially important in eyes with pathology, such as dry eye. In these eyes, the homogeneity of the tear film and its temporal stability ...
... the scattered light.6 The changes in ocular aberrations and scatter degrade the retinal image quality. The influence of the tear film on the retinal image might be especially important in eyes with pathology, such as dry eye. In these eyes, the homogeneity of the tear film and its temporal stability ...
Theoretical derivation of the depth average of remotely sensed
... chlorophyll maximum, the closer the reflectance was to the uniform case. They also found that larger deviations from the constant case were found when bb(z)was kept constant, but a(z) covaried with Chl(z). Zaneveld [17] previously derived the theoretical dependence of the remotely sensed reflectanc ...
... chlorophyll maximum, the closer the reflectance was to the uniform case. They also found that larger deviations from the constant case were found when bb(z)was kept constant, but a(z) covaried with Chl(z). Zaneveld [17] previously derived the theoretical dependence of the remotely sensed reflectanc ...
Generalized Polarization Ray Tracing using a Monte
... light propagates. In this case, the tip of the wave swept an ellipsoid as in Figure 3 (b). This type of oscillation is called elliptical polarization. If the phase difference is exactly the quarter of the wavelength ( (φx − φy ) = 0.25nπ ) and amplitudes of waves are the same, Ax = Ay , the tip of t ...
... light propagates. In this case, the tip of the wave swept an ellipsoid as in Figure 3 (b). This type of oscillation is called elliptical polarization. If the phase difference is exactly the quarter of the wavelength ( (φx − φy ) = 0.25nπ ) and amplitudes of waves are the same, Ax = Ay , the tip of t ...
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.