THE FRESNEL DIFFRACTION : A STORY OF LIGHT AND DARKNESS
... The starting point of the wave theory is undoubtedly the historical double slits experiment of Young in 1801. The two slits are illuminated by a first slit exposed to sunlight. The first slit was thin enough to provide the necessary spatially coherent light. Young could observe for the first time th ...
... The starting point of the wave theory is undoubtedly the historical double slits experiment of Young in 1801. The two slits are illuminated by a first slit exposed to sunlight. The first slit was thin enough to provide the necessary spatially coherent light. Young could observe for the first time th ...
Optical pumping of a lithium atomic beam for atom interferometry
... propagation phase varies with the sublevel and this phase dispersion complicates the analysis of experiments such as the one we have done [1] to detect the topological HeMcKellar- Wilkens phase [2, 3]. Optical pumping the atomic beam in a single hyperfine-Zeeman sublevel is the ideal way to get rid ...
... propagation phase varies with the sublevel and this phase dispersion complicates the analysis of experiments such as the one we have done [1] to detect the topological HeMcKellar- Wilkens phase [2, 3]. Optical pumping the atomic beam in a single hyperfine-Zeeman sublevel is the ideal way to get rid ...
Methods and Applications of Optical Holography
... method also falls into group of holograms designed and produced using computer software therefore the image of non-existent virtual object can be created as well as image of the real object. The background for this method was made by invention of single laser beam data recording devices [23, 24], so ...
... method also falls into group of holograms designed and produced using computer software therefore the image of non-existent virtual object can be created as well as image of the real object. The background for this method was made by invention of single laser beam data recording devices [23, 24], so ...
Single-plane multiple speckle pattern phase retrieval
... intensity variation of the diffraction pattern at a fixed detector plane. The results obtained for the test object used via phase retrieval in [19] highly correlated with those obtained using the more-established digital holographic microscopy. In [20], the phase diversity is embodied by varying the ...
... intensity variation of the diffraction pattern at a fixed detector plane. The results obtained for the test object used via phase retrieval in [19] highly correlated with those obtained using the more-established digital holographic microscopy. In [20], the phase diversity is embodied by varying the ...
Femtosecond self-guided atmospheric light strings
... but instead is caused by a very strong defocusing lens induced by the generation of an extremely narrow plasma filament in a very narrow nonlinear focal region. Although dissipation through plasma absorption is present, it is overwhelmed by strong defocusing. As this mechanism removes very little en ...
... but instead is caused by a very strong defocusing lens induced by the generation of an extremely narrow plasma filament in a very narrow nonlinear focal region. Although dissipation through plasma absorption is present, it is overwhelmed by strong defocusing. As this mechanism removes very little en ...
Paper
... The parameters of the optical trapping potential are characterized by the total laser power P and the beamwaist parameter w0 . The trap depth is proportional to P兾w02 . For a circular Gaussian beam with w0 苷 6 mm, the trap depth is 1 mK兾mW [20], and the aspect ratio of the atom cloud is 27. At P 苷 4 ...
... The parameters of the optical trapping potential are characterized by the total laser power P and the beamwaist parameter w0 . The trap depth is proportional to P兾w02 . For a circular Gaussian beam with w0 苷 6 mm, the trap depth is 1 mK兾mW [20], and the aspect ratio of the atom cloud is 27. At P 苷 4 ...
FABRICATION OF MICROFLUIDIC STRUCTURES BY LASER
... coupling position. However, this is a non-deterministic procedure, and doesn’t guarantee that we reach the maximum if the starting point is significantly off. A local maximum, for example, may trap the alignment before it reaches the global maximum. Also, since the error terms between axes are coupl ...
... coupling position. However, this is a non-deterministic procedure, and doesn’t guarantee that we reach the maximum if the starting point is significantly off. A local maximum, for example, may trap the alignment before it reaches the global maximum. Also, since the error terms between axes are coupl ...
File
... The semiconductor laser is today one of the most important types of lasers with its very important application in fiber optic communication. These lasers use semiconductors as the lasing medium and are characterized by specific advantages such as the capability of direct modulation in the gigahertz ...
... The semiconductor laser is today one of the most important types of lasers with its very important application in fiber optic communication. These lasers use semiconductors as the lasing medium and are characterized by specific advantages such as the capability of direct modulation in the gigahertz ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... application is analyzed considering various weather condition. The overall system is simulated through Optisys 7.0. The simulated result is helpful for choosing the wavelength for terrestrial free space optical communication, the maximum data rate and other FSO parameters. These results are useful f ...
... application is analyzed considering various weather condition. The overall system is simulated through Optisys 7.0. The simulated result is helpful for choosing the wavelength for terrestrial free space optical communication, the maximum data rate and other FSO parameters. These results are useful f ...
Optical coupling devices
... block 52. Bundle 48 includes a plurality of ?bres, at least are re?ected from each face once and therefore cross one of which is an emitting ?bre and at least another is the line of each roof apex (a re?ection of this in the a receiving ?bre as discussed in relation to FIG. 3 opposite face is equall ...
... block 52. Bundle 48 includes a plurality of ?bres, at least are re?ected from each face once and therefore cross one of which is an emitting ?bre and at least another is the line of each roof apex (a re?ection of this in the a receiving ?bre as discussed in relation to FIG. 3 opposite face is equall ...
PDF
... frequency shifts when interacting with rotating objects, providing a means for measuring rotation speed [7]. In addition to these classical applications, OAM is also widely used in quantum information processing to create high-dimensional quantum entanglement [8–10]. A variety of methods have been u ...
... frequency shifts when interacting with rotating objects, providing a means for measuring rotation speed [7]. In addition to these classical applications, OAM is also widely used in quantum information processing to create high-dimensional quantum entanglement [8–10]. A variety of methods have been u ...
OM1 - Faculty of Engineering
... reflected by the beam splitter. Thus, the two beams are brought together to form interference fringes. Since one beam passes through BS 3 times, a compensating plate C is required for another beam so that both beams pass through equal thickness of glass. The inclusion of a compensating plate negates ...
... reflected by the beam splitter. Thus, the two beams are brought together to form interference fringes. Since one beam passes through BS 3 times, a compensating plate C is required for another beam so that both beams pass through equal thickness of glass. The inclusion of a compensating plate negates ...
PreDesigner Manual
... If the NA is greater than 0.2 then you must be careful in interpreting these values. Note: not all paraxial solutions of an optical problem can be converted into real systems with the suggested performance, especially if the aperture or field angle is large. Note [v21]: Rays drawn. In the example sh ...
... If the NA is greater than 0.2 then you must be careful in interpreting these values. Note: not all paraxial solutions of an optical problem can be converted into real systems with the suggested performance, especially if the aperture or field angle is large. Note [v21]: Rays drawn. In the example sh ...
Effect of ABCD transformations on beam paraxiality
... The foundations of the ABCD theory are in detail tackled in the most standard laser textbooks [3, 4]. The fulfillment of the PA is the basis of the development of the paraxial wave optics and derived branches of laser optics [3, 4]. It is within the PA framework that imaging properties of lenses and ...
... The foundations of the ABCD theory are in detail tackled in the most standard laser textbooks [3, 4]. The fulfillment of the PA is the basis of the development of the paraxial wave optics and derived branches of laser optics [3, 4]. It is within the PA framework that imaging properties of lenses and ...
PDF only - at www.arxiv.org.
... the Raman wavelength will correspond to 1250 nm. The pump pulse (10 kJ, 20 ps, 1050 nm) and the seed (signal) pulse of ~10-20 fs duration at 1250 nm collides in a L ~ 3 mm long plasma cell corresponding to Tp x c/2. Tp is the pump pulse duration and c the speed of light in the plasma. The pulse inte ...
... the Raman wavelength will correspond to 1250 nm. The pump pulse (10 kJ, 20 ps, 1050 nm) and the seed (signal) pulse of ~10-20 fs duration at 1250 nm collides in a L ~ 3 mm long plasma cell corresponding to Tp x c/2. Tp is the pump pulse duration and c the speed of light in the plasma. The pulse inte ...
Mid Infrared digital holography and Terahertz imaging
... Holography was ideated in 1948 by the naturalized British Hungarian physicist Dénes Gábor, during his studies on the electronic microscope [18]. Gabor devised a technique to record and, subsequently, reconstruct both the amplitude and the phase information of a light wavefront diffracted by an objec ...
... Holography was ideated in 1948 by the naturalized British Hungarian physicist Dénes Gábor, during his studies on the electronic microscope [18]. Gabor devised a technique to record and, subsequently, reconstruct both the amplitude and the phase information of a light wavefront diffracted by an objec ...
Conference title, upper and lower case, bolded, 18 point type
... OCIS codes: (260.2110) Electromagnetic optics; (050.1960) Diffraction theory; (350.3950) Micro-optics. ...
... OCIS codes: (260.2110) Electromagnetic optics; (050.1960) Diffraction theory; (350.3950) Micro-optics. ...
Research Article Influence of Thickness on the Holographic Parameters of H-PDLC Materials
... modulation, we fitted the angular responses of different gratings just a few seconds after exposure. In Figure 5 we present the results for both, composition 1 and composition 2, the inverse of the average refractive index modulation as a function of the thickness. The linearity in this behavior, fo ...
... modulation, we fitted the angular responses of different gratings just a few seconds after exposure. In Figure 5 we present the results for both, composition 1 and composition 2, the inverse of the average refractive index modulation as a function of the thickness. The linearity in this behavior, fo ...
1.5% root-mean-square flat-intensity laser beam
... both intensity and phase. However, since the calculation of lens surfaces is based on specific input and output beam shapes, the whole system can only work well for the single input–output combination. In addition, the technique can do nothing to reduce the effect of spatial noise and imperfections ...
... both intensity and phase. However, since the calculation of lens surfaces is based on specific input and output beam shapes, the whole system can only work well for the single input–output combination. In addition, the technique can do nothing to reduce the effect of spatial noise and imperfections ...
C f= s moO moo (8)
... architecture of Fig. 1 was chosen. In this system, the mipq(which require the bulk of the computational load) are computed optically, and the kn are then digitally calculated from these Mpq values. In the practical realization of a system of the form shown in Fig. 1, various issues arise: (1) The ef ...
... architecture of Fig. 1 was chosen. In this system, the mipq(which require the bulk of the computational load) are computed optically, and the kn are then digitally calculated from these Mpq values. In the practical realization of a system of the form shown in Fig. 1, various issues arise: (1) The ef ...
Light-induced vibration in the hearing organ Linköping University Post Print
... The exceptional sensitivity of mammalian hearing organs is attributed to an active process, where force produced by sensory cells boost sound-induced vibrations, making soft sounds audible. This process is thought to be local, with each section of the hearing organ capable of amplifying sound-evoked ...
... The exceptional sensitivity of mammalian hearing organs is attributed to an active process, where force produced by sensory cells boost sound-induced vibrations, making soft sounds audible. This process is thought to be local, with each section of the hearing organ capable of amplifying sound-evoked ...
PDF
... optical sensing [1]. Having been studied for decades, optical phased arrays take many forms, from laser arrays [2], to liquid crystals [3], to microelectromechanical systems [4,5]. Combined with complementary metal-oxidesemiconductor technologies, optical phased arrays have been developed in integra ...
... optical sensing [1]. Having been studied for decades, optical phased arrays take many forms, from laser arrays [2], to liquid crystals [3], to microelectromechanical systems [4,5]. Combined with complementary metal-oxidesemiconductor technologies, optical phased arrays have been developed in integra ...
Production of photonic nanojets by using pupil
... dielectric particles, and a waist of full-width at half-maximum (FWHM) smaller than the diffraction limit can be achieved in this process. In this paper, photonic nanojet produced by a pupil-masked 3D dielectric cuboid lens is numerically investigated under the irradiation of 532 nm wavelength plane ...
... dielectric particles, and a waist of full-width at half-maximum (FWHM) smaller than the diffraction limit can be achieved in this process. In this paper, photonic nanojet produced by a pupil-masked 3D dielectric cuboid lens is numerically investigated under the irradiation of 532 nm wavelength plane ...
5. Optical fiber
... Fig.5 The laser light is focused on the tip of the fiber using an objective lens. The transmitted light cone is seen on a screen kept very close to the output end of the fiber. As the distance of the screen from the fiber is increased the diameter of spot will increases. From figure 6 we see that ...
... Fig.5 The laser light is focused on the tip of the fiber using an objective lens. The transmitted light cone is seen on a screen kept very close to the output end of the fiber. As the distance of the screen from the fiber is increased the diameter of spot will increases. From figure 6 we see that ...
Confocal microscopy
Confocal microscopy is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. It enables the reconstruction of three-dimensional structures from the obtained images. This technique has gained popularity in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science.