12. CONFOCAL MICROSCOPY • Confocal microscopy can render
... Aberrations, both chromatic and geometrical, lower the resolving power of the confocal microscope. Aberration correction, adaptive optics, is a critical issue especially when operating at very high NA (current research) However, even with an instrument that is capable in principle of producing ...
... Aberrations, both chromatic and geometrical, lower the resolving power of the confocal microscope. Aberration correction, adaptive optics, is a critical issue especially when operating at very high NA (current research) However, even with an instrument that is capable in principle of producing ...
biology 163 laboratory use of the compound light microscope
... specimen in the center of the beam of light. Do this looking from the side, with your naked eye; donʼt attempt to “hunt” for the specimen while looking through the ocular lenses! 5. Raise the stage so that the specimen is close to the objective lens. Look through the oculars and slowly lower the sta ...
... specimen in the center of the beam of light. Do this looking from the side, with your naked eye; donʼt attempt to “hunt” for the specimen while looking through the ocular lenses! 5. Raise the stage so that the specimen is close to the objective lens. Look through the oculars and slowly lower the sta ...
A CONCEPTIONAL STUDY OF OPTICAL EARTH
... aperture dimension of CCD element and the required ground resolution are l4~m and 100 m respectively, then the focal length of telescope must be 5.32 m. The aperture will be 1 .. 32 m for F-number 5. It is very easy to get 3 degree of FOV by refractive system, but to do it with the focal length and ...
... aperture dimension of CCD element and the required ground resolution are l4~m and 100 m respectively, then the focal length of telescope must be 5.32 m. The aperture will be 1 .. 32 m for F-number 5. It is very easy to get 3 degree of FOV by refractive system, but to do it with the focal length and ...
Fresnel Diffraction Geometrical optics… …light can`t turn a corner. I
... ZT = 2d2/ • one of the few Fresnel diffraction problems that can be solved analytically • beam pattern alternates between two different fringe patterns http://www.flickr.com/photos/gaeloso/4256791024/ ...
... ZT = 2d2/ • one of the few Fresnel diffraction problems that can be solved analytically • beam pattern alternates between two different fringe patterns http://www.flickr.com/photos/gaeloso/4256791024/ ...
The Influence of Air-hole Filling Fraction of Photonics Crystal Fibers
... Stimulated Brillouin Scattering (SBS) [1, 2] is a type of nonlinear optical phenomena in optical fiber. Because of the electrostrictive effect, it can lead to periodic modulation of refractive index of medium when the pump’s power is greater than the Brillouin threshold power. The index grating gene ...
... Stimulated Brillouin Scattering (SBS) [1, 2] is a type of nonlinear optical phenomena in optical fiber. Because of the electrostrictive effect, it can lead to periodic modulation of refractive index of medium when the pump’s power is greater than the Brillouin threshold power. The index grating gene ...
Excitation of a one-dimensional evanescent wave by conical edge
... The method separates the homogeneous areas (semi-infinite substrate and superstrate) from the modulated area (Au grating) where the fields are written in a Fourier expansion. The field in the superstrate (air) and the substrate (glass) can be expressed as a sum of plane waves (Rayleigh formalism). T ...
... The method separates the homogeneous areas (semi-infinite substrate and superstrate) from the modulated area (Au grating) where the fields are written in a Fourier expansion. The field in the superstrate (air) and the substrate (glass) can be expressed as a sum of plane waves (Rayleigh formalism). T ...
A 50" time-multiplexed autostereoscopic display
... vertical scan rates of 150 kHz and between 400 and 1000 Hz, to give individual view direction refresh rates of 50–60 Hz, and an eye box of about 250 mm width at a viewing distance of 1 metre. This CRT-based display can be considered to be two superimposed optical systems: a compound image transfer l ...
... vertical scan rates of 150 kHz and between 400 and 1000 Hz, to give individual view direction refresh rates of 50–60 Hz, and an eye box of about 250 mm width at a viewing distance of 1 metre. This CRT-based display can be considered to be two superimposed optical systems: a compound image transfer l ...
Thermal Lensing in a Nd:YAG Laser Rod
... from the resonator theory are lower than the values obtained with the gas laser. However, the deviation is within the accuracy of these two methods which we believe is in the order of 20%. In order to check the degree of physical distortion in the flatness of the rod ends under pump light an experim ...
... from the resonator theory are lower than the values obtained with the gas laser. However, the deviation is within the accuracy of these two methods which we believe is in the order of 20%. In order to check the degree of physical distortion in the flatness of the rod ends under pump light an experim ...
The concept of modes in optics and photonics
... quantum mechanics. In optics and photonics, the concept of modes is well suited to describe emission and absorption, coherence and interference, propagation and dispersion. The concept of modes consists of two aspects: first, the modes are solutions for the propagation of the light; second, the numb ...
... quantum mechanics. In optics and photonics, the concept of modes is well suited to describe emission and absorption, coherence and interference, propagation and dispersion. The concept of modes consists of two aspects: first, the modes are solutions for the propagation of the light; second, the numb ...
Plasmonic Airy beams with dynamically controlled trajectories Peng Zhang, Sheng Wang,
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
... ences diffraction and decay during propagation due to the truncation and loss, it maintains its size and intensity much better than the Gaussian beam does, reflecting the nondiffracting nature of the Airy beam. Our experimental results agree well with the numerical simulations. For dynamic control o ...
Intensity-dependent change in polarization state of light in normal
... Nonlinear interaction of coherent radiation with a Kerr medium has been studied by many authors. Maker et al [1,2] reported that when strong elliptically polarized light propagates through a lossless isotropic nonlinear medium, self-rotation of the polarization ellipse occurs. Prakash and Chandra [3 ...
... Nonlinear interaction of coherent radiation with a Kerr medium has been studied by many authors. Maker et al [1,2] reported that when strong elliptically polarized light propagates through a lossless isotropic nonlinear medium, self-rotation of the polarization ellipse occurs. Prakash and Chandra [3 ...
Waveguide electro-optic modulation in micro-engineered
... to L , similar to the switching voltage (Vπ ), so that a tradeoff exists between Vπ and BW and the ratio BW/Vπ is used as a figure of merit. To obtain improved efficiency (increase in BW/Vπ ), better coupling between the microwave and optical fields is required. Different solutions have been propose ...
... to L , similar to the switching voltage (Vπ ), so that a tradeoff exists between Vπ and BW and the ratio BW/Vπ is used as a figure of merit. To obtain improved efficiency (increase in BW/Vπ ), better coupling between the microwave and optical fields is required. Different solutions have been propose ...
Label-free super-resolution imaging of adenoviruses by submerged
... where dmin is the diffraction-limited optical resolution, l is the optical wavelength and NA is the numerical aperture of the microscope lens. For the optical microscopes used in this work, the theoretical diffraction limit resolutions of the light microscopes used in air for white light illuminatio ...
... where dmin is the diffraction-limited optical resolution, l is the optical wavelength and NA is the numerical aperture of the microscope lens. For the optical microscopes used in this work, the theoretical diffraction limit resolutions of the light microscopes used in air for white light illuminatio ...
CfE Advanced Higher Physics – Unit 2 – Waves
... acting on the mass and this force is always opposite to the direction of its displacement. The unbalanced force is momentarily zero as the mass passes through the central position, at which it would be at rest had no initial change been made to its state. This is known as the rest position. To see t ...
... acting on the mass and this force is always opposite to the direction of its displacement. The unbalanced force is momentarily zero as the mass passes through the central position, at which it would be at rest had no initial change been made to its state. This is known as the rest position. To see t ...
Intermittent measurement
... Besides single wavelength monitoring broad-band monitoring is another approach which was investigated since the 1970’s 8. With silicon array detectors 256, 512 or 1024 wavelengths can be monitored at the same time. Today fast CCD array detectors are commercial available. In reference 9 a direct mea ...
... Besides single wavelength monitoring broad-band monitoring is another approach which was investigated since the 1970’s 8. With silicon array detectors 256, 512 or 1024 wavelengths can be monitored at the same time. Today fast CCD array detectors are commercial available. In reference 9 a direct mea ...
Enhancement of absorption and color contrast in
... of transparent materials are a cornerstone of modern optical technology.1 These coatings utilize the principle of thin film interference to enable effects such as anti-reflection (AR) and high-reflection (HR), the former being especially important for imaging equipment such as microscope objectives, ...
... of transparent materials are a cornerstone of modern optical technology.1 These coatings utilize the principle of thin film interference to enable effects such as anti-reflection (AR) and high-reflection (HR), the former being especially important for imaging equipment such as microscope objectives, ...
863875
... phase defects with the special property of orbital angular momentum [1]. In this paper, we present the formation and analysis of 3D vortex lattice structures by means of interbeam relative phase engineering of interfering plane waves. It has been observed that minimum three plane waves are required ...
... phase defects with the special property of orbital angular momentum [1]. In this paper, we present the formation and analysis of 3D vortex lattice structures by means of interbeam relative phase engineering of interfering plane waves. It has been observed that minimum three plane waves are required ...
Nanostructured Holograms for Broadband Manipulation of Vector
... profile (m = +1 diffraction order), we demonstrated that its polarization is oriented radially, in agreement with Figure 2. As expected from the design, radially polarized beams at 633 and 850 nm are generated at angles of about 32° and 45°, respectively. For both wavelengths, the RPBs exhibit similar ...
... profile (m = +1 diffraction order), we demonstrated that its polarization is oriented radially, in agreement with Figure 2. As expected from the design, radially polarized beams at 633 and 850 nm are generated at angles of about 32° and 45°, respectively. For both wavelengths, the RPBs exhibit similar ...
Telescopes for CCD Imaging
... sometimes shifts when you point to different positions in the sky. SCT’s are difficult to focus. It is difficult to tell when you are in focus. A separate electronic focuser for close focusing, that does not move the primary, such as the JMI NGF-S or Optec TCF is highly desirable in this context. So ...
... sometimes shifts when you point to different positions in the sky. SCT’s are difficult to focus. It is difficult to tell when you are in focus. A separate electronic focuser for close focusing, that does not move the primary, such as the JMI NGF-S or Optec TCF is highly desirable in this context. So ...