Self-Accelerating Self-Trapped Optical Beams
... functions for the potential-free Schrödinger equation. In 2007, self-accelerating optical Airy beams were demonstrated [2]. This phenomenon has drawn much interest with applications ranging from trapping particles along curved paths [3] to self-bending plasma channels [4], and engineered phase matc ...
... functions for the potential-free Schrödinger equation. In 2007, self-accelerating optical Airy beams were demonstrated [2]. This phenomenon has drawn much interest with applications ranging from trapping particles along curved paths [3] to self-bending plasma channels [4], and engineered phase matc ...
Design and investigation of properties of nanocrystalline diamond
... index measurements at two wavelengths, 830 nm and 1 300 nm for the microcrystalline and nanocrystalline diamond films, with thickness ranging from 883 to 4 100 nm that were deposited on silicon substrate. They found the refractive indices of 2.34 and 2.33 at the wavelenghts of 830 and 1 300 nm, resp ...
... index measurements at two wavelengths, 830 nm and 1 300 nm for the microcrystalline and nanocrystalline diamond films, with thickness ranging from 883 to 4 100 nm that were deposited on silicon substrate. They found the refractive indices of 2.34 and 2.33 at the wavelenghts of 830 and 1 300 nm, resp ...
Imaging and Measurement of Thermal Lensing in Glass
... one wavelength. There is another type of laser which can run as a CW laser and can emit multiple wavelengths in pulses. This type of laser is known as a laser oscillator. In this case, the lasing medium will amplify a spectrum of wavelengths, so long as they satisfy equation (2-22) to exist in the c ...
... one wavelength. There is another type of laser which can run as a CW laser and can emit multiple wavelengths in pulses. This type of laser is known as a laser oscillator. In this case, the lasing medium will amplify a spectrum of wavelengths, so long as they satisfy equation (2-22) to exist in the c ...
Fast Assembly of Gold Nanoparticles in Large
... diffusion coefficient of the particles.25 Only when Pe > 1, and evaporation is fast relative to diffusion, will particles accumulate near the top of the drying film surface. When Pe < 1, diffusion is fast relative to evaporation, and hence the particles will be distributed uniformly in the directio ...
... diffusion coefficient of the particles.25 Only when Pe > 1, and evaporation is fast relative to diffusion, will particles accumulate near the top of the drying film surface. When Pe < 1, diffusion is fast relative to evaporation, and hence the particles will be distributed uniformly in the directio ...
vapor liquid - UPB Sci Bull
... Using Eq. 2 for the anchoring energy Bena and Petrescu [12] have studied the surface effects on magnetic Freedericksz transition in feronematics. In this paper we study the influence of the surface anchoring and the cell thickness on the optical-field induced Freedericksz transition in a homeotropic ...
... Using Eq. 2 for the anchoring energy Bena and Petrescu [12] have studied the surface effects on magnetic Freedericksz transition in feronematics. In this paper we study the influence of the surface anchoring and the cell thickness on the optical-field induced Freedericksz transition in a homeotropic ...
High power, continuous-wave ytterbium-doped fiber - HAL
... cooling where the laser wavelength has to be specifically adjusted, metrology or medical treatments. There is also an increasing attention of such sources for parametric applications as for instance frequency conversion, including Raman or optical parametric amplifiers [1–3]. To this purpose, rare e ...
... cooling where the laser wavelength has to be specifically adjusted, metrology or medical treatments. There is also an increasing attention of such sources for parametric applications as for instance frequency conversion, including Raman or optical parametric amplifiers [1–3]. To this purpose, rare e ...
VENUE1，SESSION 1, 9:00 to 11:00，
... based on a hybrid plasmonic Bragg grating for silicon photonics Abstract: Based on a transverse electric (TE)/transverse magnetic (TM) polarization diversity waveguide, we theoretically propose a TE-pass/TM-stop polarizer by etching a polarization dependent Bragg grating into the oxide layer of a si ...
... based on a hybrid plasmonic Bragg grating for silicon photonics Abstract: Based on a transverse electric (TE)/transverse magnetic (TM) polarization diversity waveguide, we theoretically propose a TE-pass/TM-stop polarizer by etching a polarization dependent Bragg grating into the oxide layer of a si ...
Advanced Microscopy
... resolution = two or one object? the point spread function (psf) = intensity pattern in the focal area of a lens this is equivalent to the image of a point source (light path is reversible) light is diffracted on the aperture of the microscope objective pattern is square magnitude of complex amplitud ...
... resolution = two or one object? the point spread function (psf) = intensity pattern in the focal area of a lens this is equivalent to the image of a point source (light path is reversible) light is diffracted on the aperture of the microscope objective pattern is square magnitude of complex amplitud ...
Get PDF - OSA Publishing
... our laboratory [40] [see Fig. 1(a)]. The 12 mm here is the raw disk diameter before the fabrication process, which consists in grinding and polishing. The WGMR free spectral range (FSR) mainly depends on its geometry and particularly on its circumference, since the resonant lightwave orbits just ben ...
... our laboratory [40] [see Fig. 1(a)]. The 12 mm here is the raw disk diameter before the fabrication process, which consists in grinding and polishing. The WGMR free spectral range (FSR) mainly depends on its geometry and particularly on its circumference, since the resonant lightwave orbits just ben ...
THE FARADAY AND KERR EFFECTS The Faraday and Kerr Effects
... throughout the 1800s. In 1845, in attempt to determine whether the polarity of light was affected by strong electric fields when passed through a transparent insulator, Faraday failed to detect any changes and turned his efforts toward magnetic fields. In due course, Faraday successfully found that ...
... throughout the 1800s. In 1845, in attempt to determine whether the polarity of light was affected by strong electric fields when passed through a transparent insulator, Faraday failed to detect any changes and turned his efforts toward magnetic fields. In due course, Faraday successfully found that ...
Comparison of two-color methods based on wavelength and
... the air parameters are inhomogeneously distributed in the optical path, the averaged air parameters can be measured with several sensors [1]. However, the direct measurement of air parameters with high precision in an open-air field can be difficult. On the other hand, the inhomogeneous distribution ...
... the air parameters are inhomogeneously distributed in the optical path, the averaged air parameters can be measured with several sensors [1]. However, the direct measurement of air parameters with high precision in an open-air field can be difficult. On the other hand, the inhomogeneous distribution ...
Superresolution size determination in fluorescence microscopy: A
... enveloping AID profiles 共cf. Fig. 1兲. M i,o are the maximum intensities of the enveloping functions; B i,o are constants proportional to the FWHM of the enveloping AID profiles 共e.g., 650 nm兲; z i,o are the positions of the maximum of the enveloping AID profiles; C is proportional to the FWHMmod of ...
... enveloping AID profiles 共cf. Fig. 1兲. M i,o are the maximum intensities of the enveloping functions; B i,o are constants proportional to the FWHM of the enveloping AID profiles 共e.g., 650 nm兲; z i,o are the positions of the maximum of the enveloping AID profiles; C is proportional to the FWHMmod of ...
Matter in Intense Laser Fields
... of the exciting laser field. But it is being observed that often the kinetic energy of the ejected electron far exceeds the energy of a photon of the exciting laser-field, which calls for a modified explanation of the multiphoton ionization rather than a direct extension of the linear photoelectric ...
... of the exciting laser field. But it is being observed that often the kinetic energy of the ejected electron far exceeds the energy of a photon of the exciting laser-field, which calls for a modified explanation of the multiphoton ionization rather than a direct extension of the linear photoelectric ...
Bistable localized emission states in a 200 μm broad
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
Noncollinear parametric amplification in the near
... amplification process in a χ2 crystal [17]. When the group velocities are matched, i.e. δ = 0, the bandwidth is only limited by higher orders such as group delay dispersion that start to be significant. The group velocity matching condition between signal and idler can be easily achieved in type-I con ...
... amplification process in a χ2 crystal [17]. When the group velocities are matched, i.e. δ = 0, the bandwidth is only limited by higher orders such as group delay dispersion that start to be significant. The group velocity matching condition between signal and idler can be easily achieved in type-I con ...
Résumé
... to improve the resolution. This technique is used successfully both with optics or acoustic modality [3,4], but it requires a priori knowledge of the medium. The second one only uses ballistic photons to make images: Optical Coherence Tomography (OCT) [5], confocal [6], fluorescence [7] and nonlinea ...
... to improve the resolution. This technique is used successfully both with optics or acoustic modality [3,4], but it requires a priori knowledge of the medium. The second one only uses ballistic photons to make images: Optical Coherence Tomography (OCT) [5], confocal [6], fluorescence [7] and nonlinea ...
Beam Diagnostics 2 - ab-abp-frankz
... wire velocity: depends on desired interpoint spacing and on the bunch repetition frequency detection of beam with wire: 1. change in voltage on wire induced by secondary emission 2. hard Bremsstrahlung – forward directed s which are separated from beam via an applied magnetic field and converted to ...
... wire velocity: depends on desired interpoint spacing and on the bunch repetition frequency detection of beam with wire: 1. change in voltage on wire induced by secondary emission 2. hard Bremsstrahlung – forward directed s which are separated from beam via an applied magnetic field and converted to ...
Ing. Mariangela Gioannini, PhD Research field: Optoelectronics
... Quantum dot semiconductor lasers are the last generation of semiconductor lasers developed in the 90’s. These lasers uses the quantum dots as active materials and exploits the properties coming out from the confinement of carriers in these nano-structures. QD technology is now quite well established ...
... Quantum dot semiconductor lasers are the last generation of semiconductor lasers developed in the 90’s. These lasers uses the quantum dots as active materials and exploits the properties coming out from the confinement of carriers in these nano-structures. QD technology is now quite well established ...
Laser Beams and Resonators
... masers operating in the optical or infrared wavelength regions usually appears as a beam whose transverse extent is large compared to the wavelength. The resonant properties of such a beam in the resonator structure, its propagation characteristics i free space, and its interaction behavior with var ...
... masers operating in the optical or infrared wavelength regions usually appears as a beam whose transverse extent is large compared to the wavelength. The resonant properties of such a beam in the resonator structure, its propagation characteristics i free space, and its interaction behavior with var ...
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.