Light amplificated by stimulated emission of radiation
... Types of Laser Gain Media There are a variety of very different gain media; the most common of them are: Certain direct-bandgap semiconductors such as GaAs, AlGaAs(aluminium Galium arsenide), or InGaAs(aluminium Galium arsenide), are typically pumped with electrical currents, these lasers are often ...
... Types of Laser Gain Media There are a variety of very different gain media; the most common of them are: Certain direct-bandgap semiconductors such as GaAs, AlGaAs(aluminium Galium arsenide), or InGaAs(aluminium Galium arsenide), are typically pumped with electrical currents, these lasers are often ...
Light sheet-based fluorescence microscopy: more dimensions, more
... that combines optical sectioning, the key capability of confocal and two-photon fluorescence microscopes with multiple-view imaging, which is used in optical tomography. In contrast to conventional wide-field and confocal fluorescence microscopes, a light sheet illuminates only the focal plane of th ...
... that combines optical sectioning, the key capability of confocal and two-photon fluorescence microscopes with multiple-view imaging, which is used in optical tomography. In contrast to conventional wide-field and confocal fluorescence microscopes, a light sheet illuminates only the focal plane of th ...
Feedback-induced catastrophic optical mirror damage
... easier investigation of external optical feedback influence on the near-field distribution and the emission spectra compared to mini-bars with five emitters. The single emitters were mounted with AuSn on ceramic base plates. The experimental setup for the investigation of single emitters under defin ...
... easier investigation of external optical feedback influence on the near-field distribution and the emission spectra compared to mini-bars with five emitters. The single emitters were mounted with AuSn on ceramic base plates. The experimental setup for the investigation of single emitters under defin ...
Evidence for wavelength dependence of the scattering phase
... standard scattering correction algorithm was used. Since positive errors in a and negative errors in b partially cancel in Eq. 3c, and k0 ⬎ k1 ⬎ k2 in Eq. 3b, the sigma correction procedure is rather insensitive to the artifacts in the AC-9 data discussed in the previous section. In the extreme case ...
... standard scattering correction algorithm was used. Since positive errors in a and negative errors in b partially cancel in Eq. 3c, and k0 ⬎ k1 ⬎ k2 in Eq. 3b, the sigma correction procedure is rather insensitive to the artifacts in the AC-9 data discussed in the previous section. In the extreme case ...
Experimental demonstration of a narrowband, angular tolerant
... to reach experimentally a 0.1 nm bandpass [1]. The phenomenon underlying the resonant grating filter is the excitation, thanks to the periodic structuration, of a guided mode of the thin layers stack, which generates resonant peaks in the spectral reflectivity of the device. The peak linewidth decre ...
... to reach experimentally a 0.1 nm bandpass [1]. The phenomenon underlying the resonant grating filter is the excitation, thanks to the periodic structuration, of a guided mode of the thin layers stack, which generates resonant peaks in the spectral reflectivity of the device. The peak linewidth decre ...
Soliton Radiation Beat Analysis of Optical Pulses Generated from
... Optical frequency combs constitute a discrete optical spectrum with lines that are equidistantly positioned. Frequency combs generated in modelocked lasers have been proposed and already successfully tested as calibration sources for high-resolution astronomical spectrographs. However, there is a va ...
... Optical frequency combs constitute a discrete optical spectrum with lines that are equidistantly positioned. Frequency combs generated in modelocked lasers have been proposed and already successfully tested as calibration sources for high-resolution astronomical spectrographs. However, there is a va ...
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... where ? is the two-dimensional Laplacian, the intensities are normalized to the dark irradiance Id of the crystal, V0 nl x20 =2 (V0 1 corresponds to a bias field of 74:6 V=cm), nl k20 n4e r33 E 0 , and ne is the refractive index for extraordinary polarized beams. For our choice of polarity ...
... where ? is the two-dimensional Laplacian, the intensities are normalized to the dark irradiance Id of the crystal, V0 nl x20 =2 (V0 1 corresponds to a bias field of 74:6 V=cm), nl k20 n4e r33 E 0 , and ne is the refractive index for extraordinary polarized beams. For our choice of polarity ...
Ultrafast adaptive optical near-field control
... phase and polarization shaping,22–25 based on a two-layer LCD in which each layer manipulates the spectral phase of one of the two orthogonal transverse polarization components. As a result, not only the intensity and phase but also the polarization state of light, i.e., its degree of ellipticity as ...
... phase and polarization shaping,22–25 based on a two-layer LCD in which each layer manipulates the spectral phase of one of the two orthogonal transverse polarization components. As a result, not only the intensity and phase but also the polarization state of light, i.e., its degree of ellipticity as ...
Chapter 9
... He observed that the time between eclipses of Jupiter’s moons by Jupiter decreased as the Earth moved closer to Jupiter and increased as the Earth moved away. Roemer reasoned that this was because the distance the light travelled from Jupiter to Earth became greater as the Earth’s orbit took it furt ...
... He observed that the time between eclipses of Jupiter’s moons by Jupiter decreased as the Earth moved closer to Jupiter and increased as the Earth moved away. Roemer reasoned that this was because the distance the light travelled from Jupiter to Earth became greater as the Earth’s orbit took it furt ...
Heriot-Watt University Multi-millijoule few-cycle mid
... and across radial coordinate remains very smooth and uniform (as opposed e.g., to the strong pulse splitting observed in filamentation). This is supported by the experiments during which SHG FROG traces were recorded while selecting a fraction of the beam with an aperture which was placed right after ...
... and across radial coordinate remains very smooth and uniform (as opposed e.g., to the strong pulse splitting observed in filamentation). This is supported by the experiments during which SHG FROG traces were recorded while selecting a fraction of the beam with an aperture which was placed right after ...
Non-specular reflection of convergent beams from Iiquid-solid interface
... studied for well collimated and divergent beams [13]; however, the reflection of convergent beams, such as those produced by a concave transducer or a lens, has not yet been examined explicitly . The reflection acoustic microscope [4] employs an extreme form of a convergent beam, while beams having ...
... studied for well collimated and divergent beams [13]; however, the reflection of convergent beams, such as those produced by a concave transducer or a lens, has not yet been examined explicitly . The reflection acoustic microscope [4] employs an extreme form of a convergent beam, while beams having ...
EL26960968
... segments. In this condition, we have to use the technology of all optical networks [3], [4]. So "photonic crystals" usage matter is presented, these crystals because of having unique linear and nonlinear features are used in optical communications [5]. This naming reason is related to their periodic ...
... segments. In this condition, we have to use the technology of all optical networks [3], [4]. So "photonic crystals" usage matter is presented, these crystals because of having unique linear and nonlinear features are used in optical communications [5]. This naming reason is related to their periodic ...
Printable T
... meters as a unit). As one variable increases the other decreases, because c (the speed of light) is constant. Equation 2-1: ...
... meters as a unit). As one variable increases the other decreases, because c (the speed of light) is constant. Equation 2-1: ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.