Controlling light-with-light without nonlinearity
... absorber. Indeed, in the total transmission regime, spectral components of the distorted pulse that have the same intensity and amplitude as the clock pulse will be transmitted with negligible loss, while distorted components are strongly absorbed, thereby restoring the temporal and spectral profile ...
... absorber. Indeed, in the total transmission regime, spectral components of the distorted pulse that have the same intensity and amplitude as the clock pulse will be transmitted with negligible loss, while distorted components are strongly absorbed, thereby restoring the temporal and spectral profile ...
SCH4U - Unit 1
... Schrodinger (1924) postulated that sometimes electrons behave as particles, and sometimes like waves. Because of this we cannot measure both the position and velocity of an electron at the same time. This exclusion is referred to as the Pauli Exclusion Principle. What this really means is that we ca ...
... Schrodinger (1924) postulated that sometimes electrons behave as particles, and sometimes like waves. Because of this we cannot measure both the position and velocity of an electron at the same time. This exclusion is referred to as the Pauli Exclusion Principle. What this really means is that we ca ...
Simple 3-D characterization of ultrashort laser pulses
... Temporal and spatial distribution of ultrashort laser pulse energy is crucial information for applications such as the investigation of electrons dynamics [1], the coherent control of chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important p ...
... Temporal and spatial distribution of ultrashort laser pulse energy is crucial information for applications such as the investigation of electrons dynamics [1], the coherent control of chemical reaction [2-4] or the phototherapy with femtosecond (10-15 s.) laser pulses [5]. The three most important p ...
State of the art in the determination of the fine structure constant: test
... The ratio h/m Rb is deduced from the measurement of the recoil velocity v r of an atom when it absorbs a photon (v r = ħk/m with ħ the reduced Planck constant, k the wave vector and m the mass of atoms. This measurement is performed by combining a Ramsey-Bordé atom interferometer [30] with the Bloch ...
... The ratio h/m Rb is deduced from the measurement of the recoil velocity v r of an atom when it absorbs a photon (v r = ħk/m with ħ the reduced Planck constant, k the wave vector and m the mass of atoms. This measurement is performed by combining a Ramsey-Bordé atom interferometer [30] with the Bloch ...
Mass Spectrometry (MS) Primer
... Users targeting specific molecules, wanting the quantification and the confirmation of the identity. The molecular weight, and the presence of a few specific fragments which the expected abundance are as important as the sensitivity and selectivity. ...
... Users targeting specific molecules, wanting the quantification and the confirmation of the identity. The molecular weight, and the presence of a few specific fragments which the expected abundance are as important as the sensitivity and selectivity. ...
Photon echoes for a system of large negative spin and few mean
... the TLMs were initially in the all-up, all-down, or the state in which the z component of total spin is 0. Employing entropy and the Q function Jarvis demonstrated entanglement and disentanglement for the field and TLMs as well as disentangelement of the individaul TLMs at specified times proportion ...
... the TLMs were initially in the all-up, all-down, or the state in which the z component of total spin is 0. Employing entropy and the Q function Jarvis demonstrated entanglement and disentanglement for the field and TLMs as well as disentangelement of the individaul TLMs at specified times proportion ...
Radio-frequency-induced optical gain in Pr :Y SiO
... medium. However, an intense pulse shows very different absorption phenomena. In particular, if the pulse area A 5 2n p , n 5 1, 2, 3,..., then the pulse propagates through the medium without any absorption in a twolevel system. Therefore the medium appears to be transparent to the pulse, even though ...
... medium. However, an intense pulse shows very different absorption phenomena. In particular, if the pulse area A 5 2n p , n 5 1, 2, 3,..., then the pulse propagates through the medium without any absorption in a twolevel system. Therefore the medium appears to be transparent to the pulse, even though ...
Angle-independent structural colors of silicon
... Structural colors are optical phenomena of physical origin, where microscale and nanoscale structures determine the reflected spectrum of light, although an unambiguous definition has not been settled yet.1 The mechanisms of structural colors are categorized into thin-film interference, multilayer i ...
... Structural colors are optical phenomena of physical origin, where microscale and nanoscale structures determine the reflected spectrum of light, although an unambiguous definition has not been settled yet.1 The mechanisms of structural colors are categorized into thin-film interference, multilayer i ...
297.4 kB
... museum and conservation practice. There are several reasons that prevent the use of DSPI by conservation practitioners. Commercially available DSPI systems are expensive and require trained researchers to carry out the measurements and interpret the results. In particular, defect identification and ...
... museum and conservation practice. There are several reasons that prevent the use of DSPI by conservation practitioners. Commercially available DSPI systems are expensive and require trained researchers to carry out the measurements and interpret the results. In particular, defect identification and ...
Paper
... that density fluctuations are absent. Thermal density fluctuations are characterized by g (2) (0)52, as recently observed for neon atoms by measuring the intensity correlation function @16#. The value of 2 for g (2) (0) for a thermal cloud can be traced back to an exchange term in the interaction ma ...
... that density fluctuations are absent. Thermal density fluctuations are characterized by g (2) (0)52, as recently observed for neon atoms by measuring the intensity correlation function @16#. The value of 2 for g (2) (0) for a thermal cloud can be traced back to an exchange term in the interaction ma ...
Collective State Measurement of Mesoscopic Ensembles with Single-Atom Resolution
... Refs. [7,22]. We confine 10 to 500 laser-cooled 87 Rb atoms in a near-confocal cavity of free spectral range 5632 (1) MHz and cavity linewidth =ð2Þ ¼ 1:01ð3Þ MHz at the probe wavelength of 780 nm. The atoms are cooled in the trap of depth U=h ¼ 18ð3Þ MHz via polarization gradient cooling to a radi ...
... Refs. [7,22]. We confine 10 to 500 laser-cooled 87 Rb atoms in a near-confocal cavity of free spectral range 5632 (1) MHz and cavity linewidth =ð2Þ ¼ 1:01ð3Þ MHz at the probe wavelength of 780 nm. The atoms are cooled in the trap of depth U=h ¼ 18ð3Þ MHz via polarization gradient cooling to a radi ...
Generalizing the Confocal Microscope via Heterodyne Interferometry and Digital Filtering
... Both of these systems are of the single-beam, mechanically scanned type, and neither has the precision or stability of our system. Wickramasinghe et al. (1982) have made a scanning AC differential interference contrast microscope, which measures the derivative of the phase along the scan direction; ...
... Both of these systems are of the single-beam, mechanically scanned type, and neither has the precision or stability of our system. Wickramasinghe et al. (1982) have made a scanning AC differential interference contrast microscope, which measures the derivative of the phase along the scan direction; ...
Chapter 8. Chemical Dynamics
... conditions is the transition state theory (TST) of Eyring. This would not be a good way to model, for example, photochemical reactions in which the reactants do not reach thermal ...
... conditions is the transition state theory (TST) of Eyring. This would not be a good way to model, for example, photochemical reactions in which the reactants do not reach thermal ...
Chem expo 12
... eat, the chemicals and fertilisers used to grow this food, the fuels we use for transport and energy and the wide range of medications that we use to prolong and enhance our lives all require thorough chemical analysis to ensure that they will perform their intended function and will not be harmful ...
... eat, the chemicals and fertilisers used to grow this food, the fuels we use for transport and energy and the wide range of medications that we use to prolong and enhance our lives all require thorough chemical analysis to ensure that they will perform their intended function and will not be harmful ...
Superluminal and Slow Light Propagation in a Room
... different absorption cross sections and lifetimes for Cr3⫹ ions at either mirror or inversion sites within the BeAl2O4 crystal lattice. The superluminal wave propagation is produced by a narrow “antihole” [612 Hz half width at half maximum (HWHM)] in the absorption spectrum of Cr3⫹ ions at the mirro ...
... different absorption cross sections and lifetimes for Cr3⫹ ions at either mirror or inversion sites within the BeAl2O4 crystal lattice. The superluminal wave propagation is produced by a narrow “antihole” [612 Hz half width at half maximum (HWHM)] in the absorption spectrum of Cr3⫹ ions at the mirro ...
Development of a67kHz Internal OPO Laser for Hellborne LIdar
... Nd:YVO4 is used as the laser crystal that comprises the non-dope section with the dimensions of2 x 5 x 5 mm and the Nd3+lat.% dope section with the dimensions of3 x 5 x 5 mm. Pumping is provided solely from the non-dope section to prevent thermal damage to the crystal. KTP is used as the non-linear ...
... Nd:YVO4 is used as the laser crystal that comprises the non-dope section with the dimensions of2 x 5 x 5 mm and the Nd3+lat.% dope section with the dimensions of3 x 5 x 5 mm. Pumping is provided solely from the non-dope section to prevent thermal damage to the crystal. KTP is used as the non-linear ...
The Ambient Ionization Toolbox
... Note: Thermal desorption/pyrolysis DART: even better for materials and polymers A thermal desorption/pyrolysis stage (The Biochromato, Inc. “IonRocket”) is designed for use with DART. Highly reproducible thermal desorption profiles show outgassing, additives, and high-quality pyrolysis DART mass spe ...
... Note: Thermal desorption/pyrolysis DART: even better for materials and polymers A thermal desorption/pyrolysis stage (The Biochromato, Inc. “IonRocket”) is designed for use with DART. Highly reproducible thermal desorption profiles show outgassing, additives, and high-quality pyrolysis DART mass spe ...
Group 1: The Alkali Metals
... All alkali metals have their own specific flame color. The colors are caused by the difference in energy among the valence shell of s and p orbitals, which corresponds to wavelengths of visible light. When the element is introduced into the flame, its outer electrons are excited and jump to a higher ...
... All alkali metals have their own specific flame color. The colors are caused by the difference in energy among the valence shell of s and p orbitals, which corresponds to wavelengths of visible light. When the element is introduced into the flame, its outer electrons are excited and jump to a higher ...
Bose-Einstein condensation
... new route to ultracold temperatures that does not involve cryogenics. Atoms at sub-millikelvin temperatures are now routinely used in a variety of experiments. Alkali atoms are well suited to laser-based methods because their optical transitions can be excited by available lasers and because they ha ...
... new route to ultracold temperatures that does not involve cryogenics. Atoms at sub-millikelvin temperatures are now routinely used in a variety of experiments. Alkali atoms are well suited to laser-based methods because their optical transitions can be excited by available lasers and because they ha ...
X-ray fluorescence
X-ray fluorescence (XRF) is the emission of characteristic ""secondary"" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology.