Wavefront shaping of infrared light through a subwavelength hole
... As has been demonstrated in the literature,16 surface wave holography works from region ranging from microwaves to visible light with no significant differences in the writing and reading processes. Although the surface electromagnetic wave is wavelength-dependent (in both its constituents 20 and it ...
... As has been demonstrated in the literature,16 surface wave holography works from region ranging from microwaves to visible light with no significant differences in the writing and reading processes. Although the surface electromagnetic wave is wavelength-dependent (in both its constituents 20 and it ...
External-cavity diode lasers provide absolute references for WDM
... trometers, which are then used to check the passive components such as fiber gratings and receiver filters. These diagnostic tools also can measure the wavelength of the stabilized distributed-feedback diodes and fiber-grating controlled laser-diode sources used in WDM. The most accurate measurement ...
... trometers, which are then used to check the passive components such as fiber gratings and receiver filters. These diagnostic tools also can measure the wavelength of the stabilized distributed-feedback diodes and fiber-grating controlled laser-diode sources used in WDM. The most accurate measurement ...
Demonstration of Optical Rotatory Dispersion of Sucrose
... mounted on a track and moved along the length of the tube in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is atta ...
... mounted on a track and moved along the length of the tube in intervals of 1.0 cm. The intensity of the scattered beam was recorded as a function of distance. It is also possible to keep the detector fixed and to use a light pipe in which one end can be moved down the tube while the other end is atta ...
Optical Fibre
... The speed of a light signal in an optical fibre is slower than the speed of an electrical signal in a metal wire. ...
... The speed of a light signal in an optical fibre is slower than the speed of an electrical signal in a metal wire. ...
1895 wireless telegraph (radiotelegraph) and request in Italy having been turned down.
... quanta, equal to the energy gained or lost by the electrons when moving from one orbit to another of different energy. This allowed an explanation of the observation that atoms absorb and emit light at particular frequencies that are characteristic of the atom 1916 Albert Einstein (Germany). Propose ...
... quanta, equal to the energy gained or lost by the electrons when moving from one orbit to another of different energy. This allowed an explanation of the observation that atoms absorb and emit light at particular frequencies that are characteristic of the atom 1916 Albert Einstein (Germany). Propose ...
Theory of relativistic harmonic generation
... in the 50-150 eV spectral range is -7 x lo6, which corresponds to a conversion efficiency of -3 x As shown in the inset of Fig. 1, which displays an enlarged portion of the harmonic spectrum on a logarithmic scale, harmonic radiation at energies as high as 190 eV can be obtained at lower efficiency. ...
... in the 50-150 eV spectral range is -7 x lo6, which corresponds to a conversion efficiency of -3 x As shown in the inset of Fig. 1, which displays an enlarged portion of the harmonic spectrum on a logarithmic scale, harmonic radiation at energies as high as 190 eV can be obtained at lower efficiency. ...
Machine Vision Systems as Shop Floor Metrology Tool
... constant angle, which is then translated across the path of the laser beam. ...
... constant angle, which is then translated across the path of the laser beam. ...
The professional project VEGA/CHARA and participation of ASPA
... The main intention of drawing this both plots is, to monitor how they are anti-correlated. The star does not seems to be rotating at the critcal speed. From its projected rotational velocity (Vrot sin i = 148 km/s) and the inclination ~ 38°, one can calculate that Vrot = 240 km/s. This value is onl ...
... The main intention of drawing this both plots is, to monitor how they are anti-correlated. The star does not seems to be rotating at the critcal speed. From its projected rotational velocity (Vrot sin i = 148 km/s) and the inclination ~ 38°, one can calculate that Vrot = 240 km/s. This value is onl ...
Slow Light - Duke Physics
... atoms with a strong absorption resonance is an interesting candidate. The refractive index for such a sample is typically small (n21 ≈ 1023), but it varies rapidly in the region of the resonance so that dn/dω and, hence, ng can be large (Figure 3). As the carrier frequency of a pulse is tuned near t ...
... atoms with a strong absorption resonance is an interesting candidate. The refractive index for such a sample is typically small (n21 ≈ 1023), but it varies rapidly in the region of the resonance so that dn/dω and, hence, ng can be large (Figure 3). As the carrier frequency of a pulse is tuned near t ...
Adaptive Optics and the cone mosaic
... The next generation of AO is AOSLO & AO-OCT. These two new methods aim to address the original problems Williams and colleagues faced in early retinal AO. Once the subject is properly placed, wavefront correction and imaging takes place. A laser is collimated and then reflected off of a beam-splittin ...
... The next generation of AO is AOSLO & AO-OCT. These two new methods aim to address the original problems Williams and colleagues faced in early retinal AO. Once the subject is properly placed, wavefront correction and imaging takes place. A laser is collimated and then reflected off of a beam-splittin ...
Geometrical and diffraction optics
... near-field 2QWKLVGLDJUDPDZDYH LVGLIIUDFWHGDQGREVHUYHGDWSRLQWı$V this point is moved further back, beyond the Fresnel threshold or in the farfield, Fraunhofer diffraction occurs. ...
... near-field 2QWKLVGLDJUDPDZDYH LVGLIIUDFWHGDQGREVHUYHGDWSRLQWı$V this point is moved further back, beyond the Fresnel threshold or in the farfield, Fraunhofer diffraction occurs. ...
Leaving Cert Physics Notes by Mary Singleton
... to put a line through each part when you have addressed it. Question 10 has, to date, always consisted of two parts, (a) on particle physics or (b) on the applied electricity option. NOTE: there is no rule to say that these topics, or indeed any particular topic must be on the paper , but it would b ...
... to put a line through each part when you have addressed it. Question 10 has, to date, always consisted of two parts, (a) on particle physics or (b) on the applied electricity option. NOTE: there is no rule to say that these topics, or indeed any particular topic must be on the paper , but it would b ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.