Excited States, Lasers and Non-Linear Optics
... Powerful Continuous Wave operation can be achieved by discharge (15-50 Amps!) to maximize the pumping power. Several watts CW output or upto 1 kilowatt in microsecond pulses can be generated. Pump to 4P states, 35eV above ground state by multiple collisions. Transitions correspond to 4P-4S, 514.5nm ...
... Powerful Continuous Wave operation can be achieved by discharge (15-50 Amps!) to maximize the pumping power. Several watts CW output or upto 1 kilowatt in microsecond pulses can be generated. Pump to 4P states, 35eV above ground state by multiple collisions. Transitions correspond to 4P-4S, 514.5nm ...
Laser multipass system with interior cell configuration
... APPLIED OPTICS / Vol. 50, No. 30 / 20 October 2011 ...
... APPLIED OPTICS / Vol. 50, No. 30 / 20 October 2011 ...
Vacuum-ultraviolet to infrared supercontinuum in hydrogen
... Fig. 1. Experimental setup. (a) A kagomé-PCF is filled with hydrogen using a pair of gas cells with MgF2 windows. Ultrashort few-microjoule pulses are launched into the fiber using an achromatic lens. Two chirped mirrors compensate for pulse lengthening in air. (b) Diagnostics. Upper, the VUV spectr ...
... Fig. 1. Experimental setup. (a) A kagomé-PCF is filled with hydrogen using a pair of gas cells with MgF2 windows. Ultrashort few-microjoule pulses are launched into the fiber using an achromatic lens. Two chirped mirrors compensate for pulse lengthening in air. (b) Diagnostics. Upper, the VUV spectr ...
肖连团 - 山西大学
... Can we really catch hold of a single molecule? Single molecule studies do not mean taking one molecule and analyzing it. Its only that we are detecting one molecule at a time. Detection volume is 1 m3. When a fluorophore traverses the laser excitation volume, a fluorescence photon burst i ...
... Can we really catch hold of a single molecule? Single molecule studies do not mean taking one molecule and analyzing it. Its only that we are detecting one molecule at a time. Detection volume is 1 m3. When a fluorophore traverses the laser excitation volume, a fluorescence photon burst i ...
Quantum Interference 1 Claude Cohen-Tannoudji Scott Lectures Cambridge, March 7
... Variations of the fluorescence rate RF with the detuning from the unperturbed Raman resonance One varies the splitting between g1 and g2, 1 and 2 being fixed. Or one sweeps 2, 1 being fixed The dark resonance has a width ’ determined by the relaxation time in the ground state, much smaller t ...
... Variations of the fluorescence rate RF with the detuning from the unperturbed Raman resonance One varies the splitting between g1 and g2, 1 and 2 being fixed. Or one sweeps 2, 1 being fixed The dark resonance has a width ’ determined by the relaxation time in the ground state, much smaller t ...
Strong Polarized Enhanced Raman Scattering via Optical Tunneling
... for multiplex analysis. Moreover, the polarization effect could also be explored beyond the realm of chemical analysis. For instance, nanophotonic devices that need polarization discrimination, such as optical switches, can be envisioned. An added advantage in this case is that the polarization effe ...
... for multiplex analysis. Moreover, the polarization effect could also be explored beyond the realm of chemical analysis. For instance, nanophotonic devices that need polarization discrimination, such as optical switches, can be envisioned. An added advantage in this case is that the polarization effe ...
PHY2505 Lecture 5 - Atmospheric Physics
... Some transitions are also produced by coupling of vibrational modes with electronic transitions To quantify atmospheric absorption we ...
... Some transitions are also produced by coupling of vibrational modes with electronic transitions To quantify atmospheric absorption we ...
Chapter 7- Components of Optical Instruments
... the corresponding molecule in a sin-let state. Nevertheless, one of the excited vibrational levels of the first excited triplet state is possible. Phosphorescence occurs when an electron in an excited triplet state relaxes to the ground singlet state while emitting radiation. The transitions between ...
... the corresponding molecule in a sin-let state. Nevertheless, one of the excited vibrational levels of the first excited triplet state is possible. Phosphorescence occurs when an electron in an excited triplet state relaxes to the ground singlet state while emitting radiation. The transitions between ...
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... the total scattering coefficient at angles greater than 90°. This is important because light that is scattered at angles less than 90° tends to keep going in the general direction of the incident light. If the sun is directly overhead, light scattered at an angle less than 90° will continue deeper i ...
... the total scattering coefficient at angles greater than 90°. This is important because light that is scattered at angles less than 90° tends to keep going in the general direction of the incident light. If the sun is directly overhead, light scattered at an angle less than 90° will continue deeper i ...
Superchemistry: dynamics of coupled atomic and molecular Bose
... complete atom-molecule conversion, because the oscillation frequency is higher in the center of the trap, due to the inhomogeneous atomic density. The total number shows a small decay due to spontaneous emission. The pronounced oscillation between an atomic and a molecular condensate provides clear ...
... complete atom-molecule conversion, because the oscillation frequency is higher in the center of the trap, due to the inhomogeneous atomic density. The total number shows a small decay due to spontaneous emission. The pronounced oscillation between an atomic and a molecular condensate provides clear ...
Medical Laboratory Instrumentation 2010-2011 Third Year
... • AAS is an elemental analysis technique capable of providing quantitative information on 70 elements in almost any type of sample. • AAS are that no information is obtained on the chemical form of the analyte (no “speciation”) and that often only one element can be etermined at a time. • This last ...
... • AAS is an elemental analysis technique capable of providing quantitative information on 70 elements in almost any type of sample. • AAS are that no information is obtained on the chemical form of the analyte (no “speciation”) and that often only one element can be etermined at a time. • This last ...
Influence of structural disorder on Raman scattering in amorphous
... The intensity of Raman scattering is sensitive to the degree of the structural disorder in solids, so this method can be used to measure relative fractions of the amorphous and the crystalline phases. However, there are problems in accurate estimation of such a fraction using experimental Raman spec ...
... The intensity of Raman scattering is sensitive to the degree of the structural disorder in solids, so this method can be used to measure relative fractions of the amorphous and the crystalline phases. However, there are problems in accurate estimation of such a fraction using experimental Raman spec ...
View PDF
... (magnetization and crystal structure) A light wave with high intensity can probe non-linear light-matter interactions (anti-ferromagnetic symmetry) ...
... (magnetization and crystal structure) A light wave with high intensity can probe non-linear light-matter interactions (anti-ferromagnetic symmetry) ...
Defect-based Photonic Crystal Cavity for Silicon Laser PHYC/ECE 568
... hindered such an integration because of inefficient radiative recombination of carriers in silicon due to its indirect bandgap. Previously, there has been efforts to provide optical gain nitride-rich silicon, Si/Ge and Si/SiO2 superlattices, but none of those approaches have been succesful to date. ...
... hindered such an integration because of inefficient radiative recombination of carriers in silicon due to its indirect bandgap. Previously, there has been efforts to provide optical gain nitride-rich silicon, Si/Ge and Si/SiO2 superlattices, but none of those approaches have been succesful to date. ...
10-draft-EPS-238
... Higher-order corrections may be obtained to account for interference from strong atmospheric absorption (e.g., by O3 in the UV Huggins bands) as I 0 I 0e I 0 (1 2 / 2 ), and forming an orthogonal set of correction spectra using a Gram-Schmidt orthogonalization process. For GOME, this ...
... Higher-order corrections may be obtained to account for interference from strong atmospheric absorption (e.g., by O3 in the UV Huggins bands) as I 0 I 0e I 0 (1 2 / 2 ), and forming an orthogonal set of correction spectra using a Gram-Schmidt orthogonalization process. For GOME, this ...
Introduction to the principles of Atomic Spectroscopy
... In molecular spectroscopy, low-energy radiation (IR, VIS, UV) causes molecules to vibrate/rotate or outer electrons to transit from low to high energy states ...
... In molecular spectroscopy, low-energy radiation (IR, VIS, UV) causes molecules to vibrate/rotate or outer electrons to transit from low to high energy states ...
lecture 5 infrared spectrometry
... Energy of IR photon insufficient to cause electronic excitation but can cause vibrational or rotational excitation Molecule electric field (dipole moment) interacts with IR photon ...
... Energy of IR photon insufficient to cause electronic excitation but can cause vibrational or rotational excitation Molecule electric field (dipole moment) interacts with IR photon ...
View PDF - Oriental Journal of Chemistry
... for bonding, only 4 vectors are taken into account whereas if IR or Raman Spectroscopy is being considered, 3x5 =15 ( 3xN, N = number of atoms in the molecule) Cartesian coordinates will be considered. The use of 3N vectors is not only cumbersome but also the level of mathematical theory accompanyin ...
... for bonding, only 4 vectors are taken into account whereas if IR or Raman Spectroscopy is being considered, 3x5 =15 ( 3xN, N = number of atoms in the molecule) Cartesian coordinates will be considered. The use of 3N vectors is not only cumbersome but also the level of mathematical theory accompanyin ...
D1619
... Fiber optic communication system is also called light wave systems because they employ optical fibers to transmit information. In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. Initially, this was accomplished with an optoelectro ...
... Fiber optic communication system is also called light wave systems because they employ optical fibers to transmit information. In order to transmit signals over long distances, it is necessary to compensate the attenuation losses within the fiber. Initially, this was accomplished with an optoelectro ...
Light Scattering & Fluorescence
... • 1871 – Lord Rayleigh started a quantitative study and theory • Basic idea: incident monochromatic linearly polarized light beam incident on a sample. Assume – No absorption – Randomly oriented and positioned scatterers – Isotropic scatterers – Independently scattering particles (dilute) – Particle ...
... • 1871 – Lord Rayleigh started a quantitative study and theory • Basic idea: incident monochromatic linearly polarized light beam incident on a sample. Assume – No absorption – Randomly oriented and positioned scatterers – Isotropic scatterers – Independently scattering particles (dilute) – Particle ...
Raman Spectra of Optically Trapped Microcomplexes
... excitation laser beam is separated from the million times weaker scattered Raman beam, using an interference band pass filter matching the beam in the SPEX 1404 double grating monochromator (photon counting detection, R 943-02 Hammatsu) multiple laser excitation, different wavelengths, polarizat ...
... excitation laser beam is separated from the million times weaker scattered Raman beam, using an interference band pass filter matching the beam in the SPEX 1404 double grating monochromator (photon counting detection, R 943-02 Hammatsu) multiple laser excitation, different wavelengths, polarizat ...
Raman spectroscopy
... for laser excitation and Raman light collection offers that highest Raman light collection efficiencies. When properly designed, Raman microscopes allow Raman spectroscopy with very high lateral spatial resolution, minimal depth of field and the highest possible laser energy density for a given lase ...
... for laser excitation and Raman light collection offers that highest Raman light collection efficiencies. When properly designed, Raman microscopes allow Raman spectroscopy with very high lateral spatial resolution, minimal depth of field and the highest possible laser energy density for a given lase ...
Nugget
... Magnetite (Fe3O4) is a naturally occurring mineral interesting for remarkably different fields of science. It is the first magnetic material known to mankind and it is the earliest compound known to manifest charge-ordering transition discovered by Verwey in 1939. At the same time magnetite is an in ...
... Magnetite (Fe3O4) is a naturally occurring mineral interesting for remarkably different fields of science. It is the first magnetic material known to mankind and it is the earliest compound known to manifest charge-ordering transition discovered by Verwey in 1939. At the same time magnetite is an in ...
Document
... Why not 3N-6/3N-5 bands in IR spectrum? • The theoretical number of fundamental vibrations (absorption frequencies) will seldom be observed –> overtones (multiples of a given frequency), combination (sum of two other vibrations) or difference (the difference of two other vibrations) tones increase ...
... Why not 3N-6/3N-5 bands in IR spectrum? • The theoretical number of fundamental vibrations (absorption frequencies) will seldom be observed –> overtones (multiples of a given frequency), combination (sum of two other vibrations) or difference (the difference of two other vibrations) tones increase ...