X-ray Optics - Studentportalen
... In the hard X-ray range it is easy to find scattering plane where this condition is fulfilled. Here one also uses that the penetration length of the photons are large, so that many crystal planes contribute to the scattering: thus the resolving power can become very large. At ESRF (ID16 and ID28) on ...
... In the hard X-ray range it is easy to find scattering plane where this condition is fulfilled. Here one also uses that the penetration length of the photons are large, so that many crystal planes contribute to the scattering: thus the resolving power can become very large. At ESRF (ID16 and ID28) on ...
PDF
... The first light pulse is intensity modulated to carry the phase information of the first lens of the lens system. It then intercepts the state-兩1典 wave-packet component and adds the phase 1共x , y兲. After some time the state-兩1典 component has evolved due to the first lens such that it is an appropri ...
... The first light pulse is intensity modulated to carry the phase information of the first lens of the lens system. It then intercepts the state-兩1典 wave-packet component and adds the phase 1共x , y兲. After some time the state-兩1典 component has evolved due to the first lens such that it is an appropri ...
Multifilamentation transmission through fog
... ⫻ 104 cm−3, so that the photon mean free path 共MFP兲 is about 5 m. Here, MFP is the average longitudinal length LM , along which an optical object of radius r will collide a droplet of radius R, L M = 1 / 共r + R兲2N. For an optical ray, we have r → 0, so that L M = 5 m guarantees a weak interaction o ...
... ⫻ 104 cm−3, so that the photon mean free path 共MFP兲 is about 5 m. Here, MFP is the average longitudinal length LM , along which an optical object of radius r will collide a droplet of radius R, L M = 1 / 共r + R兲2N. For an optical ray, we have r → 0, so that L M = 5 m guarantees a weak interaction o ...
Coherence and Combining Filters
... • Spatial coherence is characterized by the coherence width Wc Wc is the maximum separation of two points across the wavefront at a fixed time such that the two points still have a well-defined phase relationship (and hence are able to produce interference fringes) ...
... • Spatial coherence is characterized by the coherence width Wc Wc is the maximum separation of two points across the wavefront at a fixed time such that the two points still have a well-defined phase relationship (and hence are able to produce interference fringes) ...
Laser - nptel
... after which the phase correlation between two waves which were initially in phase ( or between two points in the same wave which had a known phase difference) drops significantly. The reason for loss of coherence is than an optical source does not emit a continuous wave for all time to come. Thermal ...
... after which the phase correlation between two waves which were initially in phase ( or between two points in the same wave which had a known phase difference) drops significantly. The reason for loss of coherence is than an optical source does not emit a continuous wave for all time to come. Thermal ...
Analysing the potential for application of the phase shift method in
... The standard illumination system of the videoendoscope works in the continuous mode only during routine observation of the examined surfaces. During the measurement the standard illumination system is automatically switched off to reach the maximal possible resolution of the interference fringe patt ...
... The standard illumination system of the videoendoscope works in the continuous mode only during routine observation of the examined surfaces. During the measurement the standard illumination system is automatically switched off to reach the maximal possible resolution of the interference fringe patt ...
TUPB049
... The interferometry beamline at ALBA had several limitations which have been overcome over the past years until currently, beam size measurements are successfully performed using this technique. The main limitation has been related to vibrations in the light wavefront transportation along the beamlin ...
... The interferometry beamline at ALBA had several limitations which have been overcome over the past years until currently, beam size measurements are successfully performed using this technique. The main limitation has been related to vibrations in the light wavefront transportation along the beamlin ...
Optical System design
... made by changing many design parameters simultaneously. This requires a true non-linear optimisation algorithm. The software uses damped least squares as the basic optimisation method, but with several enhancements [4], such as an extended line search option. The merit function is powerful and flexi ...
... made by changing many design parameters simultaneously. This requires a true non-linear optimisation algorithm. The software uses damped least squares as the basic optimisation method, but with several enhancements [4], such as an extended line search option. The merit function is powerful and flexi ...
Attosecond lighthouse driven by sub-two
... shorter than one half-optical cycle, while it is longer than one half-cycle when the intensity falls [19]. Similar behavior is observed in the spectra from N2 and Xe. However, the separation between adjacent beamlets is not exactly the same for the three gases due to their different refractive index ...
... shorter than one half-optical cycle, while it is longer than one half-cycle when the intensity falls [19]. Similar behavior is observed in the spectra from N2 and Xe. However, the separation between adjacent beamlets is not exactly the same for the three gases due to their different refractive index ...
Sample pages 2 PDF
... Among energy states, the state with the lowest energy is most stable. Therefore, the electrons in semiconductors tend to stay in low energy states. If they are excited by thermal energy, light, or electron beams, the electrons absorb these energies and transit to high energy states. These transition ...
... Among energy states, the state with the lowest energy is most stable. Therefore, the electrons in semiconductors tend to stay in low energy states. If they are excited by thermal energy, light, or electron beams, the electrons absorb these energies and transit to high energy states. These transition ...
Low-Coherence Fibre-Optic Interferometric Sensors
... fringe in the interference fringe pattern. It is so important because this position refers to the zero value of the OPD and therefore gives information about the measurand. The intensity difference between the central fringe and the first side fringe can be so small that the signal-to-noise ratio re ...
... fringe in the interference fringe pattern. It is so important because this position refers to the zero value of the OPD and therefore gives information about the measurand. The intensity difference between the central fringe and the first side fringe can be so small that the signal-to-noise ratio re ...
Optical Maser Action of Nd^{+3} in a Barium Crown Glass
... for 2% transmission. There were several reasons for using clad rods. While glass can be made with excellent optical quality, this requires large melts. In the experimental program of glass investigation that was carried out, the usual melt size was one pound. It is difficult to get such small glass ...
... for 2% transmission. There were several reasons for using clad rods. While glass can be made with excellent optical quality, this requires large melts. In the experimental program of glass investigation that was carried out, the usual melt size was one pound. It is difficult to get such small glass ...