Theory of optical second-harmonic generation from a sphere of
... approximation,78 which pertains when the refractive index of the sphere is close to that of its surroundings and affords significant simplification by eliminating the complexities of linear wave propagation. This approximation has been successful in explaining the key features of experimental SH rad ...
... approximation,78 which pertains when the refractive index of the sphere is close to that of its surroundings and affords significant simplification by eliminating the complexities of linear wave propagation. This approximation has been successful in explaining the key features of experimental SH rad ...
Experimental observation of speckle instability in Kerr random
... that the intensity used is relatively small and given the small absorption coefficient of pure LC [19], we can safely neglect thermal heating due to laser illumination. Higher intensity speckle spots show several spectral peaks at f0 /2, f0 /4 and also at 2f0 (Fig. 2b). Increasing the probe beam int ...
... that the intensity used is relatively small and given the small absorption coefficient of pure LC [19], we can safely neglect thermal heating due to laser illumination. Higher intensity speckle spots show several spectral peaks at f0 /2, f0 /4 and also at 2f0 (Fig. 2b). Increasing the probe beam int ...
Optical decay from a Fabry-Perot cavity faster than the decay time
... the stabilization of laser sources [1,2]. A novel application for high-finesse cavities was proposed in the early 90’s in the upcoming field of cavity-QED: Single atoms are strongly coupled to a cavity-stored photon field such that the mutual coherent oscillatory exchange between both sub-systems is ...
... the stabilization of laser sources [1,2]. A novel application for high-finesse cavities was proposed in the early 90’s in the upcoming field of cavity-QED: Single atoms are strongly coupled to a cavity-stored photon field such that the mutual coherent oscillatory exchange between both sub-systems is ...
Image formation and optical transfer function in a course of
... Fig 2. a) Comparison of the 3D coherent line response and b) the Line Spread Function LSF for the diffraction limited optical system. c) transversal sections of fig. 2a in defocused planes W200 (solid), W20=O. 17 (dashed), W20=O.34 (small dashed), W20=O.5 1 (dashed dotted), W200.68 (dotted), d) tran ...
... Fig 2. a) Comparison of the 3D coherent line response and b) the Line Spread Function LSF for the diffraction limited optical system. c) transversal sections of fig. 2a in defocused planes W200 (solid), W20=O. 17 (dashed), W20=O.34 (small dashed), W20=O.5 1 (dashed dotted), W200.68 (dotted), d) tran ...
Get PDF - OSA Publishing
... length difference [12–14]. In order to characterize the medium, a standard measurement of the physical thickness and refractometry can be used for large, removable objects such as glass slides or fluids. Thereby unwanted alterations can occur in the sample when changing from the characterization sys ...
... length difference [12–14]. In order to characterize the medium, a standard measurement of the physical thickness and refractometry can be used for large, removable objects such as glass slides or fluids. Thereby unwanted alterations can occur in the sample when changing from the characterization sys ...
Laser Modes
... system (E) and the uncertainty of its lifetime (t) is always greater than or equal to h/4 (Et ≥ h/4). As described above, the photons in the cavity of a typical HeNe laser are produced when 2p 55s1 neon atoms decay to the 2p53p1 energy state, and the energy of each of these photons is equal ...
... system (E) and the uncertainty of its lifetime (t) is always greater than or equal to h/4 (Et ≥ h/4). As described above, the photons in the cavity of a typical HeNe laser are produced when 2p 55s1 neon atoms decay to the 2p53p1 energy state, and the energy of each of these photons is equal ...
fabrication, characterization and application of dispersive gradient
... nowadays’ realities would be pump-probe spectroscopy, which was introduced in the 19th century for exploring shock waves. So, in order to analyze short processes which change rapidly in time, we need as short as possible light pulses, as they define time the resolution of our experiments or setups. ...
... nowadays’ realities would be pump-probe spectroscopy, which was introduced in the 19th century for exploring shock waves. So, in order to analyze short processes which change rapidly in time, we need as short as possible light pulses, as they define time the resolution of our experiments or setups. ...
TEM - UiO
... A diffraction pattern is always formed at the back focal plane of the objective (even in OM). To view this diffraction pattern one has to change the excitation of the intermediate lens. A higher strength projects the specimen image on the screen, a lower strength project the DP. The optical system o ...
... A diffraction pattern is always formed at the back focal plane of the objective (even in OM). To view this diffraction pattern one has to change the excitation of the intermediate lens. A higher strength projects the specimen image on the screen, a lower strength project the DP. The optical system o ...
Optical Waveguide Modes
... frequency ω and n2 > n3 > n1 . This relative ordering of the indices is quite a common case, corresponding, for example, to a waveguiding layer of index n2 formed on a substrate with smaller index n3 , surrounded by air of index n1 . As we will see in Chapter 3, it is a necessary condition for waveg ...
... frequency ω and n2 > n3 > n1 . This relative ordering of the indices is quite a common case, corresponding, for example, to a waveguiding layer of index n2 formed on a substrate with smaller index n3 , surrounded by air of index n1 . As we will see in Chapter 3, it is a necessary condition for waveg ...
A negative permeability material at red light
... thickness δ are chosen to reproduce the complex values of far-field reflectance and transmittance due to a given film. Optical negative index metamaterials (NIMs), also known as left-handed materials, are artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range ...
... thickness δ are chosen to reproduce the complex values of far-field reflectance and transmittance due to a given film. Optical negative index metamaterials (NIMs), also known as left-handed materials, are artificially engineered metal-dielectric composites that exhibit n' < 0 within a certain range ...
Polarimetric imaging of crystals - Werner Kaminsky
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
... measurements of the CD spectra of chromatin. They faced instrumental artifacts10 arising from electronic polarization modulators in commercial instruments that typically generate sinusoidally varying polarization states,11 thereby introducing a small admixture of linearly polarized light into the ci ...
幻灯片 1 - USTC, ICTS
... As rogue waves are exceedingly difficult to study directly, the relationship between rogue waves and solitons has not yet been definitively established, but it is believed that they are connected. Optical rogue waves. ...
... As rogue waves are exceedingly difficult to study directly, the relationship between rogue waves and solitons has not yet been definitively established, but it is believed that they are connected. Optical rogue waves. ...
Optical properties of small-bore hollow glass waveguides
... dielectric layer deposited on the inside of silica tubing. The first results and structure of the hollow glass waveguides are given in Ref. 6. For IR light, this guide acts as a dielectric-coated, metallic, hollow waveguide 1leaky guide27 because the metal layer is designed to be thick enough so tha ...
... dielectric layer deposited on the inside of silica tubing. The first results and structure of the hollow glass waveguides are given in Ref. 6. For IR light, this guide acts as a dielectric-coated, metallic, hollow waveguide 1leaky guide27 because the metal layer is designed to be thick enough so tha ...
Biomedical Imaging and Applied Optics Laboratory
... Optical Coherence Tomography (OCT) is a prominent non-invasive biomedical tissue imaging technique that generates in vivo cross-sectional images of tissue microstructure with micron-scale spatial resolution. OCT can overcome the limitations of the other techniques; but the dysplastic alterations are ...
... Optical Coherence Tomography (OCT) is a prominent non-invasive biomedical tissue imaging technique that generates in vivo cross-sectional images of tissue microstructure with micron-scale spatial resolution. OCT can overcome the limitations of the other techniques; but the dysplastic alterations are ...
A frequency stabilization method for diode lasers utilizing low
... polarized light passing through an atomic sample in the presence of a very modest 共1 mT兲 magnetic field. Near the zero crossing of this spectroscopic feature, an optical system capable of very precise polarimetry detects and corrects for very small frequency fluctuations via a feedback system, which ...
... polarized light passing through an atomic sample in the presence of a very modest 共1 mT兲 magnetic field. Near the zero crossing of this spectroscopic feature, an optical system capable of very precise polarimetry detects and corrects for very small frequency fluctuations via a feedback system, which ...
Laser and Gaussian Beam Propagation and Transformation
... Optical engineers and researchers working on optics deal with laser beams and optical systems as usual tools in their specific areas. The knowledge of the special characteristics of the propagation of laser beams through optical systems has to be one of the keystones of their actual work, and the cl ...
... Optical engineers and researchers working on optics deal with laser beams and optical systems as usual tools in their specific areas. The knowledge of the special characteristics of the propagation of laser beams through optical systems has to be one of the keystones of their actual work, and the cl ...
TEM Image Contrast
... • At high detector angles STEM mode: Z-contrast imaging annular dark field detector (ADF) or high angle ADF detects electrons scattered through larger angles than for diffraction. Absorption varies with degree of diffraction • away from strong Bragg diffraction conditions – leads to a uniform influe ...
... • At high detector angles STEM mode: Z-contrast imaging annular dark field detector (ADF) or high angle ADF detects electrons scattered through larger angles than for diffraction. Absorption varies with degree of diffraction • away from strong Bragg diffraction conditions – leads to a uniform influe ...
Optical Elements
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
Photonic crystal cavities in silicon dioxide
... shown in Fig. 1共b兲. This represents a more than one order of magnitude increase in Q-factor and a sevenfold reduction in mode volume compared to a 5 m diameter silica microdisk cavity with the same silica thickness, again obtained in FDTD simulations. The pure silica microdisks have Q and Vmode com ...
... shown in Fig. 1共b兲. This represents a more than one order of magnitude increase in Q-factor and a sevenfold reduction in mode volume compared to a 5 m diameter silica microdisk cavity with the same silica thickness, again obtained in FDTD simulations. The pure silica microdisks have Q and Vmode com ...
MONABIPHOT_All_Courses_2016
... require any special prerequisite . Prior to the course, screening tests will be organized to check on the level of students and orient them to this course when needed. Objectives : This course is intended towards students with either a limited earlier exposure to mathematical tools and methods (such ...
... require any special prerequisite . Prior to the course, screening tests will be organized to check on the level of students and orient them to this course when needed. Objectives : This course is intended towards students with either a limited earlier exposure to mathematical tools and methods (such ...
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.