Time-domain optical data storage by use of Raman coherent population trapping
... the write window is much longer than both the optical homogeneous lifetime and the inverse laser frequency jitter, limited ultimately by the homogeneous spin coherence lifetime. Thus the theoretical time-domain storage density is simply the ratio of inhomogeneous to homogeneous spin linewidth, just ...
... the write window is much longer than both the optical homogeneous lifetime and the inverse laser frequency jitter, limited ultimately by the homogeneous spin coherence lifetime. Thus the theoretical time-domain storage density is simply the ratio of inhomogeneous to homogeneous spin linewidth, just ...
Absorption & Emission
... UV-Visible Spectroscopy • Ultraviolet-visible spectroscopy involves the absorption of ultraviolet/visible light by a molecule causing the promotion of an electron from a ground electronic state to an excited electronic state. • Ultraviolet/Visible light: wavelengths (l) between 190 and 800 nm ...
... UV-Visible Spectroscopy • Ultraviolet-visible spectroscopy involves the absorption of ultraviolet/visible light by a molecule causing the promotion of an electron from a ground electronic state to an excited electronic state. • Ultraviolet/Visible light: wavelengths (l) between 190 and 800 nm ...
Dual-color total internal reflection fluorescence cross
... significantly improved selectivity and applicability.8 FCCS institutes two differently colored labels and realizes the distinction between coinciding and separated occurrence of these labels. It thus introduces a useful tool to monitor various biological assays including molecular binding between tw ...
... significantly improved selectivity and applicability.8 FCCS institutes two differently colored labels and realizes the distinction between coinciding and separated occurrence of these labels. It thus introduces a useful tool to monitor various biological assays including molecular binding between tw ...
Instruments for Optical Spectroscopy-Web
... - Maximum sensitivity: at approx. 1000 nm - Usable range: 0.75 – 3 µm with cooling: up to FIR - Crystalline semiconductors with decreasing resistance upon absorption of radiation (e.g. sulfides, selenides, lead, cadmium, gallium, indium etc.) - Cooling to suppress noise from thermally induced transi ...
... - Maximum sensitivity: at approx. 1000 nm - Usable range: 0.75 – 3 µm with cooling: up to FIR - Crystalline semiconductors with decreasing resistance upon absorption of radiation (e.g. sulfides, selenides, lead, cadmium, gallium, indium etc.) - Cooling to suppress noise from thermally induced transi ...
Saturation
... Linear and Nonlinear Absorption In case the incident wave with spectral energy density ( ) I ( ) c And spectral width L Which is large compared to the halfwidth of the Absorption profile L The total intensity becomes I I ( )d I ( 0 ) L ...
... Linear and Nonlinear Absorption In case the incident wave with spectral energy density ( ) I ( ) c And spectral width L Which is large compared to the halfwidth of the Absorption profile L The total intensity becomes I I ( )d I ( 0 ) L ...
Raman tailored photonic-crystal-fiber for telecom band photon
... measured interferogram allows the calculation of the complex transmittivity from which the group-velocity dispersion (GVD) of each transmitted mode is derived [19]. The measured inverse group-velocity β1 of the fundamental mode is shown in Figure 3 and compared with the simulation. The measured ZDW ...
... measured interferogram allows the calculation of the complex transmittivity from which the group-velocity dispersion (GVD) of each transmitted mode is derived [19]. The measured inverse group-velocity β1 of the fundamental mode is shown in Figure 3 and compared with the simulation. The measured ZDW ...
Document
... The transmission spectra of partially aligned films of DNA and polynucleotide molecules were carefully measured in the terahertz frequency range. The effect of multiple reflections in films were carefully considered and were easily distinguished from the actual phonon modes. The effect of the ori ...
... The transmission spectra of partially aligned films of DNA and polynucleotide molecules were carefully measured in the terahertz frequency range. The effect of multiple reflections in films were carefully considered and were easily distinguished from the actual phonon modes. The effect of the ori ...
PowerPoint 簡報
... UV-Visible Spectroscopy • Ultraviolet-visible spectroscopy involves the absorption of ultraviolet/visible light by a molecule causing the promotion of an electron from a ground electronic state to an excited electronic state. • Ultraviolet/Visible light: wavelengths (l) between 190 and 800 nm ...
... UV-Visible Spectroscopy • Ultraviolet-visible spectroscopy involves the absorption of ultraviolet/visible light by a molecule causing the promotion of an electron from a ground electronic state to an excited electronic state. • Ultraviolet/Visible light: wavelengths (l) between 190 and 800 nm ...
Principles of Spectroscopy
... – Simpler, atomic systems with fewer energy states (vs molecules) undergo resonance fluorescence • Not as widely used in analytical chemistry as non-resonance fluorescence – Hg analysis is one example Excitation Beam ...
... – Simpler, atomic systems with fewer energy states (vs molecules) undergo resonance fluorescence • Not as widely used in analytical chemistry as non-resonance fluorescence – Hg analysis is one example Excitation Beam ...
Chiroptical Spectroscopy - Ruhr
... Waves hitting the polarizer with their electric field vector parallel to the grid lines induce oscillation of electrons in metal wires: reflection of the wave Waves hitting the polarizer with their electric field vector perpendicular to the grid lines show weak to no interaction with the grid ...
... Waves hitting the polarizer with their electric field vector parallel to the grid lines induce oscillation of electrons in metal wires: reflection of the wave Waves hitting the polarizer with their electric field vector perpendicular to the grid lines show weak to no interaction with the grid ...
Development of a New Optical Wavelength Rejection Filter
... Index Headings: Instrumentation, emission spectroscopy; Filters; Ar + lasers; Light scattering; Optics; Reflectance; Raman spectroscopy; Techniques, spectroscopic; Visible UV spectroscopy; X-ray diffraction. ...
... Index Headings: Instrumentation, emission spectroscopy; Filters; Ar + lasers; Light scattering; Optics; Reflectance; Raman spectroscopy; Techniques, spectroscopic; Visible UV spectroscopy; X-ray diffraction. ...
Collective molecular rotation in water and other simple liquids
... izer followed by a polarization scrambler. Light polarized parallel Žperpendicular. to the horizontal scattering plane is denoted H ŽV.. The polarization combinations considered are labeled VV, HV, VH, and HH, where the incident polarization is given by the first letter and the scattered polarizatio ...
... izer followed by a polarization scrambler. Light polarized parallel Žperpendicular. to the horizontal scattering plane is denoted H ŽV.. The polarization combinations considered are labeled VV, HV, VH, and HH, where the incident polarization is given by the first letter and the scattered polarizatio ...
Single-pulse coherent anti-Stokes Raman scattering microscopy
... Coherent anti-Stokes Raman scattering (CARS) is a nonlinear Raman process in which pulsed light of at least two frequencies is mixed within a sample. By temporally and spatially overlapping the pump light at a frequency of ωp and Stokes light at ωs, CARS light at a frequency of 2ωp-ωs is produced. W ...
... Coherent anti-Stokes Raman scattering (CARS) is a nonlinear Raman process in which pulsed light of at least two frequencies is mixed within a sample. By temporally and spatially overlapping the pump light at a frequency of ωp and Stokes light at ωs, CARS light at a frequency of 2ωp-ωs is produced. W ...
NONLINEAR SCATTERING EFFECTS IN OPTICAL FIBERS
... pump wave. Of course, high-energy photon at the so-called anti-Stokes frequency can also be created if phonon of right energy and momentum is available. There are two nonlinear scattering phenomenon in fibers and both are related to vibrational excitation modes of silica [2–6, 31–33]. These phenomeno ...
... pump wave. Of course, high-energy photon at the so-called anti-Stokes frequency can also be created if phonon of right energy and momentum is available. There are two nonlinear scattering phenomenon in fibers and both are related to vibrational excitation modes of silica [2–6, 31–33]. These phenomeno ...
Mechanical mapping with chemical specificity by confocal Brillouin
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
Acceleration of ultracold atoms: towards a measurement of
... leading to a broadening of the velocity distribution. The solution is then to use two non-resonant (to avoid spontaneous emission) counter-propagating beams of frequencies ν1 and ν2 . In this case, the atom undergoes Raman transitions between two hyperfine levels: absorption of a photon ν1 followed ...
... leading to a broadening of the velocity distribution. The solution is then to use two non-resonant (to avoid spontaneous emission) counter-propagating beams of frequencies ν1 and ν2 . In this case, the atom undergoes Raman transitions between two hyperfine levels: absorption of a photon ν1 followed ...
Synchronized ti scattering microscopy
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
Low-coherence heterodyne photon correlation spectroscopy
... mean diameter was determined by the manufacturer using electron microscopy. Care was taken to avoid particle settling by addition of deuterium-oxide (DO) to the suspending fluid, making the polystyrene spheres neutrally buoyant. The volume fractions utilized ranged from 0.001% to 0.01% yielding fro ...
... mean diameter was determined by the manufacturer using electron microscopy. Care was taken to avoid particle settling by addition of deuterium-oxide (DO) to the suspending fluid, making the polystyrene spheres neutrally buoyant. The volume fractions utilized ranged from 0.001% to 0.01% yielding fro ...
coefficient extinction molar riboflavin
... After all, nobody solves structures with UV any longer! Many organic molecules have chromophores that absorb UV ...
... After all, nobody solves structures with UV any longer! Many organic molecules have chromophores that absorb UV ...
G 3 Geochemistry Geophysics
... hydrothermal vent environments where targets of interest such as high-temperature vent fluids, fragile chimney structures and bacterial mats may be either too hot for contact analysis or altered when brought to the surface for ship- or shore-based analysis. Raman spectroscopy has been widely used in ...
... hydrothermal vent environments where targets of interest such as high-temperature vent fluids, fragile chimney structures and bacterial mats may be either too hot for contact analysis or altered when brought to the surface for ship- or shore-based analysis. Raman spectroscopy has been widely used in ...
Surface-Enhanced Raman Scattering in Noble
... one of the highlights of optical spectroscopy in metal transfer to the surface, results in a broadening of SP resnanostructures during past 25 years [1]. A renewed in- onance peak by the amount of level spacing at the Fermi terest in SERS stems from the discovery of extremely energy, γs ∼ vF /R (vF ...
... one of the highlights of optical spectroscopy in metal transfer to the surface, results in a broadening of SP resnanostructures during past 25 years [1]. A renewed in- onance peak by the amount of level spacing at the Fermi terest in SERS stems from the discovery of extremely energy, γs ∼ vF /R (vF ...
Total Internal Reflection Spectroscopy for Studying Soft Matter
... detected. Second-order nonlinear optical techniques, such as sum-frequency generation and second harmonic generation, vanish in centrosymmetric media but are permitted at interfaces, which break the inversion symmetry of (most) bulk phases. The disadvantage of the selection rule-based approach is th ...
... detected. Second-order nonlinear optical techniques, such as sum-frequency generation and second harmonic generation, vanish in centrosymmetric media but are permitted at interfaces, which break the inversion symmetry of (most) bulk phases. The disadvantage of the selection rule-based approach is th ...
The Fundamentals of Infrared Spectroscopy
... some cases this involves breaking the light up into component wavelengths so that the sample is exposed to only a narrow region of the spectrum at any one time. In this form of infrared spectroscopy the wavelength of light incident on the detector at a given time is known. This is called DISPERSIVE ...
... some cases this involves breaking the light up into component wavelengths so that the sample is exposed to only a narrow region of the spectrum at any one time. In this form of infrared spectroscopy the wavelength of light incident on the detector at a given time is known. This is called DISPERSIVE ...
Untitled
... spectrum to be used for material identification and analysis. Raman spectroscopy is used to analyze a wide range of materials, including gases, liquids, and solids. Highly complex materials such as biological organisms and human tissue can also be analyzed by Raman spectroscopy. • For solid material ...
... spectrum to be used for material identification and analysis. Raman spectroscopy is used to analyze a wide range of materials, including gases, liquids, and solids. Highly complex materials such as biological organisms and human tissue can also be analyzed by Raman spectroscopy. • For solid material ...
Dark Resonances From Optical Pumping to Cold Atoms and
... Note finally that the dark resonance exists only if the two laser fields are coherent. If their phases changes in a random way, the phase difference between the two absorption amplitudes appearing in Eq. (5) changes also in a random way so that the destructive interference cannot hold for all times. ...
... Note finally that the dark resonance exists only if the two laser fields are coherent. If their phases changes in a random way, the phase difference between the two absorption amplitudes appearing in Eq. (5) changes also in a random way so that the destructive interference cannot hold for all times. ...