Optical microscope - Frank`s Hospital Workshop
... lenses to bring the image to focus for the eye. The eyepiece is inserted into the top end of the body tube. Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. Typical magnification values for eyepieces include 5x, 10x and 2x. In some h ...
... lenses to bring the image to focus for the eye. The eyepiece is inserted into the top end of the body tube. Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. Typical magnification values for eyepieces include 5x, 10x and 2x. In some h ...
LEP 2.6.07 Helium Neon Laser
... recombination process of the laser cycle takes place on its walls. As far as the active material is concerned, the diameter of the capillary should be as small as possible to enable an optimal laser output, but it should not be too small as to block the path of the fundamental mode. The course which ...
... recombination process of the laser cycle takes place on its walls. As far as the active material is concerned, the diameter of the capillary should be as small as possible to enable an optimal laser output, but it should not be too small as to block the path of the fundamental mode. The course which ...
297.4 kB
... 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 the analysis of defect development is not simple nor unambiguous, as it requires rel ...
... 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 the analysis of defect development is not simple nor unambiguous, as it requires rel ...
Manipulating Atoms with Photons
... corresponding to the selection rule Me − Mg = 1 associated to a σ+ -excitation (see § 2.1). Once the atom has been excited in e+1/2 , it can fall back by spontaneous emission either in g−1/2 , in which case it can repeat the same cycle, or in g+1/2 by emission of a πpolarized photon. In the last cas ...
... corresponding to the selection rule Me − Mg = 1 associated to a σ+ -excitation (see § 2.1). Once the atom has been excited in e+1/2 , it can fall back by spontaneous emission either in g−1/2 , in which case it can repeat the same cycle, or in g+1/2 by emission of a πpolarized photon. In the last cas ...
Special Optical Elements
... band and that the dichroic beam-splitter reflect it. Although this can work well if one has a laser line that coincides with the peak of the excitation spectrum, more commonly, the excitation is from a Hg or Xe arc. As such sources are far less bright than lasers, in terms of being able to concentra ...
... band and that the dichroic beam-splitter reflect it. Although this can work well if one has a laser line that coincides with the peak of the excitation spectrum, more commonly, the excitation is from a Hg or Xe arc. As such sources are far less bright than lasers, in terms of being able to concentra ...
The European Concerted Research Action COST P14
... The idea proposed by Pr. G. Farkas which was abundantly discussed during my visit is based on the so-called “Sommerfeld precursor”. The “final product” could be the production of very high frequencies during a very (attosecond or even less) short time using a strong laser pulse and a dielectric mat ...
... The idea proposed by Pr. G. Farkas which was abundantly discussed during my visit is based on the so-called “Sommerfeld precursor”. The “final product” could be the production of very high frequencies during a very (attosecond or even less) short time using a strong laser pulse and a dielectric mat ...
Minimized speckle noise in lens-less holographic projection by pixel
... The goal of the algorithm is to calculate a set of sub-holograms that would reconstruct a 2-D intensity distribution of the USAF pattern on a distant projection screen, when displayed one by one on the SLM. As the first step of the proposed algorithm the input bitmap is split into a set of sub-image ...
... The goal of the algorithm is to calculate a set of sub-holograms that would reconstruct a 2-D intensity distribution of the USAF pattern on a distant projection screen, when displayed one by one on the SLM. As the first step of the proposed algorithm the input bitmap is split into a set of sub-image ...
Single Particle Spectroscopy Study of Metal-Film
... surfaces immediately allow direct comparison between the experiment and the theory. Recent progress and interest in optical microscopy has enabled the study of single metal nanoparticles.28-31 The pioneering work was done by Feldmann and co-workers,32,33 who systematically studied the optical proper ...
... surfaces immediately allow direct comparison between the experiment and the theory. Recent progress and interest in optical microscopy has enabled the study of single metal nanoparticles.28-31 The pioneering work was done by Feldmann and co-workers,32,33 who systematically studied the optical proper ...
Single Particle Spectroscopy Study of Metal-Film
... surfaces immediately allow direct comparison between the experiment and the theory. Recent progress and interest in optical microscopy has enabled the study of single metal nanoparticles.28-31 The pioneering work was done by Feldmann and co-workers,32,33 who systematically studied the optical proper ...
... surfaces immediately allow direct comparison between the experiment and the theory. Recent progress and interest in optical microscopy has enabled the study of single metal nanoparticles.28-31 The pioneering work was done by Feldmann and co-workers,32,33 who systematically studied the optical proper ...
Ultrasensitive Beam Deflection Measurement via Interferometric
... is half the beam deflection angle). These measurements are shown in Fig. 3. At smaller driving voltages, the lock-in amplifier was unable to lock to the signal. There are other, perhaps more interesting points. The deflection indirectly measured the linear travel resolution of the piezo electric act ...
... is half the beam deflection angle). These measurements are shown in Fig. 3. At smaller driving voltages, the lock-in amplifier was unable to lock to the signal. There are other, perhaps more interesting points. The deflection indirectly measured the linear travel resolution of the piezo electric act ...
Open Frame CD/DVD Reader
... Gaussian beams. After that we will discuss the properties of the Semiconductor or Diode Laser. Due to the similarity of generating and detecting of light by semiconductors the subsequent chapter explains the behaviour and properties of photo diodes. For the separation of the incident and reflected b ...
... Gaussian beams. After that we will discuss the properties of the Semiconductor or Diode Laser. Due to the similarity of generating and detecting of light by semiconductors the subsequent chapter explains the behaviour and properties of photo diodes. For the separation of the incident and reflected b ...
Experiment Guide - Industrial Fiber Optics
... support this conclusion. The behavior of light in these instances can be explained with ordinary geometry. Light is either reflected, absorbed, scattered, or some combination of the three, but the path it takes can be traced using straight lines and angles. In reality, light also has properties norm ...
... support this conclusion. The behavior of light in these instances can be explained with ordinary geometry. Light is either reflected, absorbed, scattered, or some combination of the three, but the path it takes can be traced using straight lines and angles. In reality, light also has properties norm ...
Wavelength swept amplified spontaneous emission source
... imaging and microscopy applications, the tight instantaneous bandwidth requirement in OCT of ~0.1 nm causes a huge power loss due to the high finesse filtering [14]. Therefore an additional post-amplification can be used to provide sufficient levels of output power. The process of post-amplification ...
... imaging and microscopy applications, the tight instantaneous bandwidth requirement in OCT of ~0.1 nm causes a huge power loss due to the high finesse filtering [14]. Therefore an additional post-amplification can be used to provide sufficient levels of output power. The process of post-amplification ...
12. CONFOCAL MICROSCOPY • Confocal microscopy can render
... 12. CONFOCAL MICROSCOPY Confocal microscopy can render depth-resolved slices through a 3D object by rejecting much of the out of focus light via a pinhole. The image is reconstructed serially, i.e. point by point, using a single photodetector, rather than in parallel (in bright field, phase cont ...
... 12. CONFOCAL MICROSCOPY Confocal microscopy can render depth-resolved slices through a 3D object by rejecting much of the out of focus light via a pinhole. The image is reconstructed serially, i.e. point by point, using a single photodetector, rather than in parallel (in bright field, phase cont ...
Micro- and Nanotechnologies for Optical Neural Interfaces
... ending with corner mirrors to direct light laterally with respect to the implant direction. Each waveguide was coupled to external sources with single mode fibers, for overall outcoupling efficiency ranging from 23 to 33%. The same authors, in 2012, extended this technology to 3D arrays of independe ...
... ending with corner mirrors to direct light laterally with respect to the implant direction. Each waveguide was coupled to external sources with single mode fibers, for overall outcoupling efficiency ranging from 23 to 33%. The same authors, in 2012, extended this technology to 3D arrays of independe ...
Optics of Gaussian Beams
... transverse mode, although if the mirrors are adjusted too far from optimum the laser will go out. ...
... transverse mode, although if the mirrors are adjusted too far from optimum the laser will go out. ...
Fig. 1 - Computational Manufacturing and Materials Research Lab
... the law of reflection describes how light is reflected from smooth surfaces (Fig. 2). The angle between the point of contact of a ray and the outward normal to the surface at that point is the angle of incidence (hi). The law of reflection states that the angle at which the light is reflected is the sam ...
... the law of reflection describes how light is reflected from smooth surfaces (Fig. 2). The angle between the point of contact of a ray and the outward normal to the surface at that point is the angle of incidence (hi). The law of reflection states that the angle at which the light is reflected is the sam ...
NONLINEAR OPTICS BASICS Units and Nomenclature
... increases. In other words: the errors associated with optical beam characterization get magnified by the order of the nonlinearity under study. There is an extensive nomenclature for characterizing the light (almost always laser light) interacting with the nonlinear optical medium. Different descrip ...
... increases. In other words: the errors associated with optical beam characterization get magnified by the order of the nonlinearity under study. There is an extensive nomenclature for characterizing the light (almost always laser light) interacting with the nonlinear optical medium. Different descrip ...
Single-Mode Photonic Band Gap Guidance of Light in Air
... far field. Fibers that have maxima in their transmission spectra at a particular laser wavelength guide such laser light in the core over lengths of several tens of centimeters (corresponding to hundreds of thousands of optical wavelengths). The length is presently limited by fluctuations in the fib ...
... far field. Fibers that have maxima in their transmission spectra at a particular laser wavelength guide such laser light in the core over lengths of several tens of centimeters (corresponding to hundreds of thousands of optical wavelengths). The length is presently limited by fluctuations in the fib ...
Four-wave mixing with matter waves
... We have performed a two-dimensional numerical simulation of 4WM using equation (1) and the technique of ref. 9. The interaction energy (chemical potential) was chosen to be the same as it would be in three dimensions with a scattering length of 2.8 nm. The simulation releases 106 atoms from a trap w ...
... We have performed a two-dimensional numerical simulation of 4WM using equation (1) and the technique of ref. 9. The interaction energy (chemical potential) was chosen to be the same as it would be in three dimensions with a scattering length of 2.8 nm. The simulation releases 106 atoms from a trap w ...
Performance of fourier domain vs. time domain optical coherence
... We immediately observe the better sensitivity of FDOCT systems as compared to TDOCT setups. The calculated curve coincides very well with the measured values for the system sensitivity (squared dots in Fig. 4). Moreover, we recognize that in the case of FDOCT excess noise is negligible as compared t ...
... We immediately observe the better sensitivity of FDOCT systems as compared to TDOCT setups. The calculated curve coincides very well with the measured values for the system sensitivity (squared dots in Fig. 4). Moreover, we recognize that in the case of FDOCT excess noise is negligible as compared t ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.