Molecular beam epitaxy of periodic BaF2 /PbEuSe layers on Si„111…
... GaAs/AlGaAs heterostructures, a large number of layers of exactly the same optical thickness are required to achieve high reflectivity. For fabrication of Bragg reflectors with center wavelengths in the range of 1.3–5.0 mm, it is desirable to grow heterostructures with high refractive index ratio. O ...
... GaAs/AlGaAs heterostructures, a large number of layers of exactly the same optical thickness are required to achieve high reflectivity. For fabrication of Bragg reflectors with center wavelengths in the range of 1.3–5.0 mm, it is desirable to grow heterostructures with high refractive index ratio. O ...
Biomedical Imaging and Applied Optics Laboratory
... their chromatin changes and colours more darkly when stained during histopathology. Nuclear sizes change from the normal 5 − 10 µm to 1.5 − −2 x the size, i.e. 10 − 20 µm. Currently, these early changes are only detectable by histopathology or, non-invasively, by optical imaging techniques such as c ...
... their chromatin changes and colours more darkly when stained during histopathology. Nuclear sizes change from the normal 5 − 10 µm to 1.5 − −2 x the size, i.e. 10 − 20 µm. Currently, these early changes are only detectable by histopathology or, non-invasively, by optical imaging techniques such as c ...
Paper
... gain. This is due to the buildup of a macroscopic matter wave grating inside the condensate and was observed in situ by a pump-probe measurement. Figure 1a shows the basic light scattering process. An atom scatters a photon from the laser beam (called “dressing beam”) into another mode and receives ...
... gain. This is due to the buildup of a macroscopic matter wave grating inside the condensate and was observed in situ by a pump-probe measurement. Figure 1a shows the basic light scattering process. An atom scatters a photon from the laser beam (called “dressing beam”) into another mode and receives ...
Get PDF - OSA Publishing
... obtains the group index and thickness of transparent media [21,22] and a Mach-Zehnder multiwavelength interferometer can generate a 2D map of the refractive index distribution and the thickness profile [23]. Further, an equivalent approach was reported whereby the immersion medium of a digital holog ...
... obtains the group index and thickness of transparent media [21,22] and a Mach-Zehnder multiwavelength interferometer can generate a 2D map of the refractive index distribution and the thickness profile [23]. Further, an equivalent approach was reported whereby the immersion medium of a digital holog ...
Optimal wavelength for ultrahigh-resolution optical
... measuring singly back scattered light as a function of depth, OCT has the potential to image tissue structure with high resolution and sensitivity in vivo. Coherence-domain ranging in OCT is performed using a Michelson interferometer. Longitudinal resolution, governed by the source coherence length, ...
... measuring singly back scattered light as a function of depth, OCT has the potential to image tissue structure with high resolution and sensitivity in vivo. Coherence-domain ranging in OCT is performed using a Michelson interferometer. Longitudinal resolution, governed by the source coherence length, ...
Refraction
... Shine the laser beam into the jello semicircle along the ray shown on the left side. Notice the beam as it passes through the jello. Mark the location in which the beam exits the semicircle on the curved side. Mark another spot on your paper that can be used to sketch the path of the beam as it ...
... Shine the laser beam into the jello semicircle along the ray shown on the left side. Notice the beam as it passes through the jello. Mark the location in which the beam exits the semicircle on the curved side. Mark another spot on your paper that can be used to sketch the path of the beam as it ...
Single-shot Detection of Wavepacket Evolution
... plate. The probe, a 500 fsec ”half-cycle” pulse (HCP) of THz radiation[9] propagates through the laser/atom interaction region anti-parallel to the pump pulse. The HCP gives the electronic wavepacket in each atom an impulsive ”kick.”[10] The energy dis tribution of the wavepacket following the kick ...
... plate. The probe, a 500 fsec ”half-cycle” pulse (HCP) of THz radiation[9] propagates through the laser/atom interaction region anti-parallel to the pump pulse. The HCP gives the electronic wavepacket in each atom an impulsive ”kick.”[10] The energy dis tribution of the wavepacket following the kick ...
Localized measurement of longitudinal and transverse
... The velocities obtained from the fit near the solid-liquid interface are slightly larger than expected from the reference. We attribute this to the relatively large effect of diffusion compared to the flow velocity at these locations on the OCT signal decorrelation. Next, we analyze measurements for ...
... The velocities obtained from the fit near the solid-liquid interface are slightly larger than expected from the reference. We attribute this to the relatively large effect of diffusion compared to the flow velocity at these locations on the OCT signal decorrelation. Next, we analyze measurements for ...
Get PDF - OSA Publishing
... reflection of the forward-propagating even mode. The periodic coupling can be sustained in the slow-light regime only when (ii) two modes coexist at the gap edge; see Figs. 2(d) and 2(f). Therefore the configuration with out-of-phase shifted Bragg gratings is the most preferred for switching of slow ...
... reflection of the forward-propagating even mode. The periodic coupling can be sustained in the slow-light regime only when (ii) two modes coexist at the gap edge; see Figs. 2(d) and 2(f). Therefore the configuration with out-of-phase shifted Bragg gratings is the most preferred for switching of slow ...
Resolution Power And Intensity Distribution Using Synthetic Square
... The line spread function has been solved by using the program (MathCAD) for the ideal optical system or contains focus error (W20=0.5λ,1λ,2λ) and when contains spherical aberration (W40=0.5λ,1λ) or coma aberration (W31=0.5λ) with different value of rotation angle (Ψ=0,90,180). The apertures which ta ...
... The line spread function has been solved by using the program (MathCAD) for the ideal optical system or contains focus error (W20=0.5λ,1λ,2λ) and when contains spherical aberration (W40=0.5λ,1λ) or coma aberration (W31=0.5λ) with different value of rotation angle (Ψ=0,90,180). The apertures which ta ...
Low-Coherence Fibre-Optic Interferometric Sensors
... be noted that if ∆φ = 0, then there is no spectral modulation (Fig. 1a). If the phase difference between the interfering beams varies from zero, then the function takes the form of the cosine curve (Fig. 1b). The spacing of adjacent transmission peak is proportional to the inverse of the optical pat ...
... be noted that if ∆φ = 0, then there is no spectral modulation (Fig. 1a). If the phase difference between the interfering beams varies from zero, then the function takes the form of the cosine curve (Fig. 1b). The spacing of adjacent transmission peak is proportional to the inverse of the optical pat ...
OFS Capabilities 09.qxp:Layout 1
... are now used in medical devices, material processing, micromachining, and high-power military applications. National security initiatives have also advanced specialty fiber development. The military is increasingly using highspeed communication systems on its aircraft, meaning optical fibers must be ...
... are now used in medical devices, material processing, micromachining, and high-power military applications. National security initiatives have also advanced specialty fiber development. The military is increasingly using highspeed communication systems on its aircraft, meaning optical fibers must be ...
Soliton pairs in a fiber laser: from anomalous to normal average
... In great contrast with the anomalous dispersion case studied in Ref. 6, where the soliton pairs spiralled towards a ±π/2 phase-locked state, the dynamical evolution of pulse pairs in the present normal dispersion case is faster in terms of cavity round trips, and the attractor found is characterized ...
... In great contrast with the anomalous dispersion case studied in Ref. 6, where the soliton pairs spiralled towards a ±π/2 phase-locked state, the dynamical evolution of pulse pairs in the present normal dispersion case is faster in terms of cavity round trips, and the attractor found is characterized ...
2 Pulsed Optics
... k . Energy conservation implies that ω2 = 2ω, while momentum conservation yields k = k 1 + k 2 , k = 2k 1 or k = 2k 2 . Five rays therefore exit the doubling material: two rays are at the fundamental frequency ω in the directions k 1 and k 2 of the incident rays, and superimposed on them are two ray ...
... k . Energy conservation implies that ω2 = 2ω, while momentum conservation yields k = k 1 + k 2 , k = 2k 1 or k = 2k 2 . Five rays therefore exit the doubling material: two rays are at the fundamental frequency ω in the directions k 1 and k 2 of the incident rays, and superimposed on them are two ray ...
Optical pumping of a lithium atomic beam for atom interferometry
... propagation phase varies with the sublevel and this phase dispersion complicates the analysis of experiments such as the one we have done [1] to detect the topological HeMcKellar- Wilkens phase [2, 3]. Optical pumping the atomic beam in a single hyperfine-Zeeman sublevel is the ideal way to get rid ...
... propagation phase varies with the sublevel and this phase dispersion complicates the analysis of experiments such as the one we have done [1] to detect the topological HeMcKellar- Wilkens phase [2, 3]. Optical pumping the atomic beam in a single hyperfine-Zeeman sublevel is the ideal way to get rid ...
full text pdf
... optical absorption), and c) transverse optical structure in the silks. The electromagnetic scattering theory can then be used to link the observed residual visibility to the optical characteristics of the silks, enabling the measurement of the principal refractive indices, the optical absorption (if ...
... optical absorption), and c) transverse optical structure in the silks. The electromagnetic scattering theory can then be used to link the observed residual visibility to the optical characteristics of the silks, enabling the measurement of the principal refractive indices, the optical absorption (if ...
Damping rates of the atomic velocity in Sisyphus cooling
... Sisyphus cooling. More precisely, we measure, both in the experiments and in the numerical simulations, the width of the atomic velocity distribution (which is proportional to the square root of the kinetic energy of the atomic sample) for different lattice durations within the thermalization phase. ...
... Sisyphus cooling. More precisely, we measure, both in the experiments and in the numerical simulations, the width of the atomic velocity distribution (which is proportional to the square root of the kinetic energy of the atomic sample) for different lattice durations within the thermalization phase. ...
D12 in docx
... lithography. A red laser focus exposes the photoresist, while a green laser depletes (or de-excites or “erases”) from all sides using a bottle beam. (b) Foci measured by scanning a gold bead through the focus in three dimensions. Taken from Ref.[D12:5]. ...
... lithography. A red laser focus exposes the photoresist, while a green laser depletes (or de-excites or “erases”) from all sides using a bottle beam. (b) Foci measured by scanning a gold bead through the focus in three dimensions. Taken from Ref.[D12:5]. ...
self-study - Technion moodle
... The signal to be amplified and a pump laser are multiplexed into the doped fibre, and the signal is amplified through interaction with the doping ions. The most common example is the Erbium Doped Fiber Amplifier (EDFA), where the core of a silica fiber is doped with trivalent Erbium ions and can be ...
... The signal to be amplified and a pump laser are multiplexed into the doped fibre, and the signal is amplified through interaction with the doping ions. The most common example is the Erbium Doped Fiber Amplifier (EDFA), where the core of a silica fiber is doped with trivalent Erbium ions and can be ...
9701/04 - StudyGuide.PK
... reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of t ...
... reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of t ...
Three-dimensional imaging by optical sectioning in the aberration
... this improve the attainable lateral resolution (Nellist et al. 2004), which is inversely proportional to α, but also reduces the depth of field, which is inversely proportional to α 2 . This fact has long been known in the field of light optics (Born & Wolf 1999). Depth of field is the distance paralle ...
... this improve the attainable lateral resolution (Nellist et al. 2004), which is inversely proportional to α, but also reduces the depth of field, which is inversely proportional to α 2 . This fact has long been known in the field of light optics (Born & Wolf 1999). Depth of field is the distance paralle ...
3D optical data storage
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120mm). Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.No commercial product based on 3D optical data storage has yet arrived on the mass market, although several companies are actively developing the technology and claim that it may become available ""soon"".