Rotational Raman Spectra of Diatomic Molecules
... For Rayleigh scattering, the particles must be much smaller than the For Rayleigh scattering the particles must be much smaller than the light light’ss wavelength. Occurs when light travels through transmissive solids or liquids; most prominent in gases. For x = 2r/, particles are considere ...
... For Rayleigh scattering, the particles must be much smaller than the For Rayleigh scattering the particles must be much smaller than the light light’ss wavelength. Occurs when light travels through transmissive solids or liquids; most prominent in gases. For x = 2r/, particles are considere ...
Resonant and non-resonant generation and focusing of surface plasmons with circular gratings
... account for this the magnitude of the electric field was multiplied by sinθn. When SPP waves propagate across a single slit, the transmitted intensity will be modified by the transmission coefficient, T, and the wave will gain a phase, Φ. Crossing multiple gratings is then accounted for by the terms ...
... account for this the magnitude of the electric field was multiplied by sinθn. When SPP waves propagate across a single slit, the transmitted intensity will be modified by the transmission coefficient, T, and the wave will gain a phase, Φ. Crossing multiple gratings is then accounted for by the terms ...
The Setup, Design, and Implementation of a Photoluminescence Experiment on Quantum Wells
... fluorescence coming through the hole was to reflecting back in on itself; once the small bright spot seen on the card was made – via adjusting the partially reflective mirror – to go back into ...
... fluorescence coming through the hole was to reflecting back in on itself; once the small bright spot seen on the card was made – via adjusting the partially reflective mirror – to go back into ...
OCT
... OCT, . As in Fig. 6b the width of the envelope of establishes the ultimate resolution in locating the reflector’s position. This resolution in time is nothing more that the coherence time of the source, C . In terms of depth, this resolution limit is the coherence length, lC v C , ...
... OCT, . As in Fig. 6b the width of the envelope of establishes the ultimate resolution in locating the reflector’s position. This resolution in time is nothing more that the coherence time of the source, C . In terms of depth, this resolution limit is the coherence length, lC v C , ...
Optics in Confocal Microscopy
... The relationship between NA and resolution For lenses in air NA = 1 / 2F, where F = the F number of the lens. (i.e. an objective of NA 0.5 has an F number of one). Ernst Abbe introduced this term because he realised that it is proportional to the (lateral) resolving power of the lens, according to ...
... The relationship between NA and resolution For lenses in air NA = 1 / 2F, where F = the F number of the lens. (i.e. an objective of NA 0.5 has an F number of one). Ernst Abbe introduced this term because he realised that it is proportional to the (lateral) resolving power of the lens, according to ...
OXIDATION OF CYCLOHEXANOL TO CYCLOHEXANONE The
... An IR spectrophotometer is an instrument which is designed to obtain an infrared spectra of a molecule. An IR spectra is obtained by first irradiating a sample with an IR source of light. The light passes through the sample, which can be in solution or contained within a salt plate, and then onto an ...
... An IR spectrophotometer is an instrument which is designed to obtain an infrared spectra of a molecule. An IR spectra is obtained by first irradiating a sample with an IR source of light. The light passes through the sample, which can be in solution or contained within a salt plate, and then onto an ...
Single-pulse coherent anti-Stokes Raman scattering microscopy
... resonant signal of a single Raman mode can be extracted from analysis of the CARS spectrum [12–14]. The spectral analysis also provides multi-spectral images based on various Raman modes. In this paper, we demonstrate two approaches to overcome the two difficulties in singlepulse CARS microscopy. Th ...
... resonant signal of a single Raman mode can be extracted from analysis of the CARS spectrum [12–14]. The spectral analysis also provides multi-spectral images based on various Raman modes. In this paper, we demonstrate two approaches to overcome the two difficulties in singlepulse CARS microscopy. Th ...
Stopped light with storage times greater than one second using EIT
... cryptosystems already exist and there have been demonstrations of linear optics quantum computing [1], quantum teleportation, quantum non-demolition measurements [2], quantum feedback and control [3]. To proceed further it is necessary to have devices such as single photon sources, quantum memories ...
... cryptosystems already exist and there have been demonstrations of linear optics quantum computing [1], quantum teleportation, quantum non-demolition measurements [2], quantum feedback and control [3]. To proceed further it is necessary to have devices such as single photon sources, quantum memories ...
Self-stabilized single-longitudinal-mode operation
... by spatial hole burning. To maintain a single longitudinal mode, it is necessary to eliminate spatial hole burning, for example, by introducing quarter-wave plates at both ends of the gain medium' or by using a ring cavity.2 In a standingwave resonator, an additional wavelength-selective element, su ...
... by spatial hole burning. To maintain a single longitudinal mode, it is necessary to eliminate spatial hole burning, for example, by introducing quarter-wave plates at both ends of the gain medium' or by using a ring cavity.2 In a standingwave resonator, an additional wavelength-selective element, su ...
Fiberoptic Sample Holder (FOSH): Characteristics and Uses APPLICATION NOTE 1056-201
... the bundle to the rod, a slight difference in bundle and rod length, or the reflectivity of the light at each surface interface. They also do not include the effects of cooling on the parameters of the fiberoptic materials. If exact attenuation values are required, the user must determine them for h ...
... the bundle to the rod, a slight difference in bundle and rod length, or the reflectivity of the light at each surface interface. They also do not include the effects of cooling on the parameters of the fiberoptic materials. If exact attenuation values are required, the user must determine them for h ...
A negative permeability material at red light
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
... artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range of wavelengths. In addition, a magnetic resonant behavior should be observed in NIMs at this range. The magnetic resonance in any optical NIM is always required to make the real part of the effective refra ...
PHYS4014 - Lasers and Nonlinear Optics
... Laser principles: Light sources and coherence, spontaneous and stimulated emission of radiation and the Einstein A and B coefficients and the relationship between them, absorption and gain coefficients in lasing media, population inversions, optical pumping and the principles of optical cavities. Di ...
... Laser principles: Light sources and coherence, spontaneous and stimulated emission of radiation and the Einstein A and B coefficients and the relationship between them, absorption and gain coefficients in lasing media, population inversions, optical pumping and the principles of optical cavities. Di ...
FIB – an easy tool for fabrication of high quality plasmonic structures
... grooves and the interface, the combination of FIB and SEM appears to be the best solution. The LYRA3 (Fig. 2), a combination of the state-of-the-art electron microscope and focused ion beam source, is an instrument of choice for the preparation of the above mentioned structures. The instrument contr ...
... grooves and the interface, the combination of FIB and SEM appears to be the best solution. The LYRA3 (Fig. 2), a combination of the state-of-the-art electron microscope and focused ion beam source, is an instrument of choice for the preparation of the above mentioned structures. The instrument contr ...
Technical Article
... In the decade since its introduction, optical coherence tomography (OCT) has proven to be an important modality for micrometer-scale imaging [1]. To date, virtually all systems built for clinical and biological use have employed a variable group delay reference arm to coherently gate backscattered l ...
... In the decade since its introduction, optical coherence tomography (OCT) has proven to be an important modality for micrometer-scale imaging [1]. To date, virtually all systems built for clinical and biological use have employed a variable group delay reference arm to coherently gate backscattered l ...
Extreme Sensitivity in Photoacoustics by Using Optical Cantilever
... Low resolution Fourier Transform infrared (FTIR) spectrometers are known to be the best instruments for gas analysis, when a broadband black body radiation source and a normal absorption technique is used. However, modern spectrometers are developed very close to their theoretical performance limits ...
... Low resolution Fourier Transform infrared (FTIR) spectrometers are known to be the best instruments for gas analysis, when a broadband black body radiation source and a normal absorption technique is used. However, modern spectrometers are developed very close to their theoretical performance limits ...
Infrared spectroscopy- Teachers notes - Mr-Morgan
... The C-C and C-O bond absorption is found in the fingerprint region where there are lots of peaks so it is difficult to assign these. The C=O bond is found around 1700cm-1, so this is useful as is the O-H at 2500-3300cm-1, which is very broad and the C-H at 2800-2900cm-1. ...
... The C-C and C-O bond absorption is found in the fingerprint region where there are lots of peaks so it is difficult to assign these. The C=O bond is found around 1700cm-1, so this is useful as is the O-H at 2500-3300cm-1, which is very broad and the C-H at 2800-2900cm-1. ...
Laser beam profiling
... that passes through the aperture is measured by a detector and correlated with the position of the aperture. The signal is then differentiated to obtain the beam profile. •One of the better methods for profiling using mechanical parts •Knife is scanned perpendicularly across the beam’s axis of propa ...
... that passes through the aperture is measured by a detector and correlated with the position of the aperture. The signal is then differentiated to obtain the beam profile. •One of the better methods for profiling using mechanical parts •Knife is scanned perpendicularly across the beam’s axis of propa ...
Use of Broadband, Continuous-Wave Diode Lasers in Cavity Ring
... between cavity axial modes. In this respect our setup is entirely equivalent to those using a pulsed system. Although the power of the laser does not affect the exponential decay constant t, it does affect the signal-tonoise ratio on the detector. One might therefore expect that a relatively low-pow ...
... between cavity axial modes. In this respect our setup is entirely equivalent to those using a pulsed system. Although the power of the laser does not affect the exponential decay constant t, it does affect the signal-tonoise ratio on the detector. One might therefore expect that a relatively low-pow ...
Chapter 9 Atomic Absorption and Atomic Fluorescence Spectrometry
... It provides enhanced sensitivity because the entire sample is atomized in a short period, and the average residence time of the atoms in the optical path is a second or more. A few microliters of sample are first evaporated at a low temperature and then ashed at a somewhat higher temperature in an e ...
... It provides enhanced sensitivity because the entire sample is atomized in a short period, and the average residence time of the atoms in the optical path is a second or more. A few microliters of sample are first evaporated at a low temperature and then ashed at a somewhat higher temperature in an e ...
Niyaz_Ahmad_Report
... of crystallite size and poling field. This particular piece of work opened up a new area of research dealing with various aspects of glass-ceramics. Potassium lithium niobate is a promising material for second harmonic generation (SHG) blue lasers since it has a large nonlinearity, high damage thres ...
... of crystallite size and poling field. This particular piece of work opened up a new area of research dealing with various aspects of glass-ceramics. Potassium lithium niobate is a promising material for second harmonic generation (SHG) blue lasers since it has a large nonlinearity, high damage thres ...
2.2.3.- X-ray diffraction
... atomic spacing in crystals and, therefore, they could be diffracted [36]. This was immediately confirmed by Walter Friedrich and Paul Knipping [36]. In 1914 Darwin elaborated a Kinematic Theory of Diffraction, which assumed that xrays diffracted by each element in the volume of the material were ind ...
... atomic spacing in crystals and, therefore, they could be diffracted [36]. This was immediately confirmed by Walter Friedrich and Paul Knipping [36]. In 1914 Darwin elaborated a Kinematic Theory of Diffraction, which assumed that xrays diffracted by each element in the volume of the material were ind ...
Tutor 4
... In the last issue, we described how defocus affects the formation of an image. This information, combined with the basic imaging theory introduced in the first two parts of this series, has given us a fairly clear picture of how lithographic imaging systems work. We are now in a position to make a l ...
... In the last issue, we described how defocus affects the formation of an image. This information, combined with the basic imaging theory introduced in the first two parts of this series, has given us a fairly clear picture of how lithographic imaging systems work. We are now in a position to make a l ...
Holographic Metalens for Switchable Focusing of Surface Plasmons
... performance of the device, as the model does not take this into account. Furthermore, an effective numerical aperture (NA) can be defined according to NA = (λSPP/πw) where 2w is the full width at half-maximum of the beam at the focus. The effective NA for the metalens with this definition is calculated ...
... performance of the device, as the model does not take this into account. Furthermore, an effective numerical aperture (NA) can be defined according to NA = (λSPP/πw) where 2w is the full width at half-maximum of the beam at the focus. The effective NA for the metalens with this definition is calculated ...
Principles of Fourier Transform Optical Measurements
... • Move one mirror back 1/4 of a wavelength. The two beams will be 180° out of phase and they will destructively interfere, the field will ...
... • Move one mirror back 1/4 of a wavelength. The two beams will be 180° out of phase and they will destructively interfere, the field will ...