Confocal Microscopy - Emory Physics
... It is tempting to assume that making the pinhole as small as possible is the best choice. However, as the pinhole size is reduced, so too are the number of photons that arrive at the detector from the specimen. This may lead to a reduced signal-to-noise ratio. To offset the weaker signal more fluores ...
... It is tempting to assume that making the pinhole as small as possible is the best choice. However, as the pinhole size is reduced, so too are the number of photons that arrive at the detector from the specimen. This may lead to a reduced signal-to-noise ratio. To offset the weaker signal more fluores ...
Bose-Einstein Condensation of Trapped Atomic Gases
... In classical physics, light is a wave and matter consists of particles. At the beginning of the twentieth century, new experiments like the discovery of the photo effect shattered the common view of life. Those observations could only be explained by the assumption that light consists of quantized e ...
... In classical physics, light is a wave and matter consists of particles. At the beginning of the twentieth century, new experiments like the discovery of the photo effect shattered the common view of life. Those observations could only be explained by the assumption that light consists of quantized e ...
Accuracy in Positioning Systems
... to generate some fractionally induced leadscrew heating, with consequent thermal expansion and positional change. Accordingly, repeatability figures for open loop or rotary-encoded positioning tables are short-term measurements which reflect the intrinsic properties of the leadscrew and nut. The sho ...
... to generate some fractionally induced leadscrew heating, with consequent thermal expansion and positional change. Accordingly, repeatability figures for open loop or rotary-encoded positioning tables are short-term measurements which reflect the intrinsic properties of the leadscrew and nut. The sho ...
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Physics 445LW Modern Physics Laboratory Microwave Radiation
... Be sure to investigate a number of different atomic planes in both blocks. Do the larger block first, as the smaller unit cell may present some unexpected results ...
... Be sure to investigate a number of different atomic planes in both blocks. Do the larger block first, as the smaller unit cell may present some unexpected results ...
Mode structure and ray dynamics of a parabolic dome microcavity
... Figure 3: (a) Representation of parabolic cylinder coordinates in the z - ρ plane of a cylindrical coordinate system (z is the vertical axis). The third dimension is obtained by rotating the figure around ẑ by the angle φ. The point A is specified by ξ = 1.3 f , η = 0.9 f and φ = 0. The focus of a ...
... Figure 3: (a) Representation of parabolic cylinder coordinates in the z - ρ plane of a cylindrical coordinate system (z is the vertical axis). The third dimension is obtained by rotating the figure around ẑ by the angle φ. The point A is specified by ξ = 1.3 f , η = 0.9 f and φ = 0. The focus of a ...
Volume determination of the Avogadro spheres of
... incorporated in the vacuum chamber housing which is flown-through by a water-glycolmixture. The temperature of the liquid is stabilized by a thermostat to 0.01 K, so that due to the thermal inertia of the massive body of the vacuum chamber a temperature fluctuation of only a few millikelvin is reach ...
... incorporated in the vacuum chamber housing which is flown-through by a water-glycolmixture. The temperature of the liquid is stabilized by a thermostat to 0.01 K, so that due to the thermal inertia of the massive body of the vacuum chamber a temperature fluctuation of only a few millikelvin is reach ...
RESONATOR OPTICS
... An optical resonator, the optical counterpart of an electronic resonant circuit, confines and stores light at certain resonance frequencies. It may be viewed as an optical transmission system incorporating feedback; light circulates or is repeatedly reflected within the system, without escaping. Th ...
... An optical resonator, the optical counterpart of an electronic resonant circuit, confines and stores light at certain resonance frequencies. It may be viewed as an optical transmission system incorporating feedback; light circulates or is repeatedly reflected within the system, without escaping. Th ...
Wavefront control of UV narrow bandpass filters prepared
... instrument enables one to distinguish one surface from the other. ...
... instrument enables one to distinguish one surface from the other. ...
Achromatic correction of diffractive dispersion in white light SLM
... monitored during free-space propagation. Its complex amplitude at the position r′ can be formally written as ψ (r′ , λ ) ∝ FrTλ {exp[iΦ(r⊥ , λ0 )]}, where FrTλ denotes the Fresnel transform, whose kernel depends on the wavelength of the modulated wave. As a consequence, the spatial distribution of t ...
... monitored during free-space propagation. Its complex amplitude at the position r′ can be formally written as ψ (r′ , λ ) ∝ FrTλ {exp[iΦ(r⊥ , λ0 )]}, where FrTλ denotes the Fresnel transform, whose kernel depends on the wavelength of the modulated wave. As a consequence, the spatial distribution of t ...
Light, Mirrors, and Lenses
... rock produced a wave much like the one in Figure 1. A wave is a disturbance that carries energy through matter or space. The matter in this case is the water, and the energy originally comes from the impact of the rock. As the ripples spread out, they carry some of that energy. Light is another type ...
... rock produced a wave much like the one in Figure 1. A wave is a disturbance that carries energy through matter or space. The matter in this case is the water, and the energy originally comes from the impact of the rock. As the ripples spread out, they carry some of that energy. Light is another type ...
Metamaterials for Space Applications
... incidence angle. For other angles of incoming radiation, the structure is actually expected to increase the scattering. In [18] the concept of using a so-called superlens, i.e., a slab with εr and µr being both negative is introduced in order to cancel the scattering from line or dipole sources loca ...
... incidence angle. For other angles of incoming radiation, the structure is actually expected to increase the scattering. In [18] the concept of using a so-called superlens, i.e., a slab with εr and µr being both negative is introduced in order to cancel the scattering from line or dipole sources loca ...
Laser-Assisted Dynamics on Metallic Surfaces using
... Time-resolved photoelectron spectroscopy is a powerful technique for the study of real-time electron dynamics on metallic surfaces. These studies are performed in pumpprobe geometries, where a pump pulse excites a dynamic process and a time-delayed probe monitors changes in the system. Furthermore, ...
... Time-resolved photoelectron spectroscopy is a powerful technique for the study of real-time electron dynamics on metallic surfaces. These studies are performed in pumpprobe geometries, where a pump pulse excites a dynamic process and a time-delayed probe monitors changes in the system. Furthermore, ...
Diamond chemical-vapor deposition on optical fibers for
... critical steps in developing a fiber coupled single-photon source based on optically active defect centers in diamond. © 2005 American Institute of Physics. 关DOI: 10.1063/1.1890484兴 The availability of precise silica fabrication technologies, flexible waveguiding technologies, and high speed switchi ...
... critical steps in developing a fiber coupled single-photon source based on optically active defect centers in diamond. © 2005 American Institute of Physics. 关DOI: 10.1063/1.1890484兴 The availability of precise silica fabrication technologies, flexible waveguiding technologies, and high speed switchi ...
Modes in Optical Fibers
... One of the key challenges in coupling light into a single-mode fiber is to find out the focal plane of the lens. In order to simplify this, place a microscope glass slide at and angle 45 degrees with respect to the beam path between laser and lens. Observe the light beam reflected from the front fac ...
... One of the key challenges in coupling light into a single-mode fiber is to find out the focal plane of the lens. In order to simplify this, place a microscope glass slide at and angle 45 degrees with respect to the beam path between laser and lens. Observe the light beam reflected from the front fac ...
Effect of group-delay ripples on dispersion
... phase reversal. In Region I 共c 苷 p兲, the center frequency of the soliton is aligned with one of the minima of the dispersion ripples. The effective grating dispersion is always anomalous, i.e., b # 0, because we have chosen g , 0. When T0 is large, the dispersion varies rapidly in a pulse bandwidth. ...
... phase reversal. In Region I 共c 苷 p兲, the center frequency of the soliton is aligned with one of the minima of the dispersion ripples. The effective grating dispersion is always anomalous, i.e., b # 0, because we have chosen g , 0. When T0 is large, the dispersion varies rapidly in a pulse bandwidth. ...