Optical Nonlinearities in the Transparency Region of Bulk Semiconductors . W
... generality, we assume that the measurement is performed on beam 1, while beam 2 acts as an excitation source only. The first terms on the right-hand side of the preceding equations correspond to self-action (ie., single-beam experiments). The second terms correspond to the case of an excite-probe ex ...
... generality, we assume that the measurement is performed on beam 1, while beam 2 acts as an excitation source only. The first terms on the right-hand side of the preceding equations correspond to self-action (ie., single-beam experiments). The second terms correspond to the case of an excite-probe ex ...
Optically Pumped Solid-State Lasers
... gallium garnet (GGG), scandium-substituted GGG (GSGG), and in various glasses. Another important laser of this type is the holmium (Ho3+ ) laser in LiYF4 (YLF), frequently with erbium ions (Er3+ ) or thulium ions (Tm3+ ) added to the host to assist in the absorption of flashlamp energy and transfer ...
... gallium garnet (GGG), scandium-substituted GGG (GSGG), and in various glasses. Another important laser of this type is the holmium (Ho3+ ) laser in LiYF4 (YLF), frequently with erbium ions (Er3+ ) or thulium ions (Tm3+ ) added to the host to assist in the absorption of flashlamp energy and transfer ...
Get PDF - OSA Publishing
... resulted in two key approaches: the interferometric or phase mask method [1] and point-bypoint (PbP) inscription [2–5]. The PbP approach is the focus if this paper as it provides a useful means to produce flexible grating structures, as variations in the grating length, pitch, and spectral response ...
... resulted in two key approaches: the interferometric or phase mask method [1] and point-bypoint (PbP) inscription [2–5]. The PbP approach is the focus if this paper as it provides a useful means to produce flexible grating structures, as variations in the grating length, pitch, and spectral response ...
Ultrahigh-Q toroidal microresonators for cavity quantum
... are confined to the interior dielectric in whispering-gallerytype resonators, the atom can interact only with the evanescent field of the cavity mode. In the following discussion, the atom is assumed to be located near the resonator surface at the location where the electric field strength is larges ...
... are confined to the interior dielectric in whispering-gallerytype resonators, the atom can interact only with the evanescent field of the cavity mode. In the following discussion, the atom is assumed to be located near the resonator surface at the location where the electric field strength is larges ...
imaging single-electron charging in nanostructures by low
... incorporating a new controller and software, Mike taught me all about the LT-AFM and its temper, in particular all the things not to do with it. After Mike left, the LT-AFM lab became rather quiet, but after a short solo interlude, Jun Zhu joined the project. Jun’s knowledge in low-temperature exper ...
... incorporating a new controller and software, Mike taught me all about the LT-AFM and its temper, in particular all the things not to do with it. After Mike left, the LT-AFM lab became rather quiet, but after a short solo interlude, Jun Zhu joined the project. Jun’s knowledge in low-temperature exper ...
Distributed Temperature Sensing Using Stimulated
... particularly with development of fiber-grating-fabrication techniques [1], [2]. Based on a coherent scattering mechanism, the fiber gratings can be used as in-fiber reflector or filter for fiber-optic communications and sensors. It is well known that fiber Bragg gratings (FBGs) introduce a contradir ...
... particularly with development of fiber-grating-fabrication techniques [1], [2]. Based on a coherent scattering mechanism, the fiber gratings can be used as in-fiber reflector or filter for fiber-optic communications and sensors. It is well known that fiber Bragg gratings (FBGs) introduce a contradir ...
Generation and Application of Bessel Beams in Electron Microscopy
... In this sense, the introduction of off-axis amplitude holograms can be considered a significant development. These holograms, which consist of a modulated diffraction grating, benefit from the absence of unwanted scattering from their transparent regions by alternating fully absorbing and fully tran ...
... In this sense, the introduction of off-axis amplitude holograms can be considered a significant development. These holograms, which consist of a modulated diffraction grating, benefit from the absence of unwanted scattering from their transparent regions by alternating fully absorbing and fully tran ...
PDF
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
... requires a high power pump laser which makes the light source expensive and bulky. In addition, the microstructure fiber requires a free space coupling to the interferometer, which limits the optical power at the sample and the stability of the system. Finally, in order to achieve broad bandwidth, h ...
Guide for the Measurement of Smooth Surface Topography using
... Liam Blunt (University of Huddersfield), Dr Mike Walls (Applied Multilayers), David Flack and Chris Jones (NPL), Dr Erik Novak (Veeco), Dr Carol Daniel (Lambda Photometrics) and Dr Ted Vorburger (NIST) for contributing and suggesting improvements to this guide. ...
... Liam Blunt (University of Huddersfield), Dr Mike Walls (Applied Multilayers), David Flack and Chris Jones (NPL), Dr Erik Novak (Veeco), Dr Carol Daniel (Lambda Photometrics) and Dr Ted Vorburger (NIST) for contributing and suggesting improvements to this guide. ...
Coupling Efficiency and Alignment Sensitivity of Single
... The method of launching waves on a fiber optic waveguide is to focus a light beam onto the fiber end. ...
... The method of launching waves on a fiber optic waveguide is to focus a light beam onto the fiber end. ...
Application note: Stripping cleaving and coupling to
... aligned with sub-µm precision to obtain maximum transmission. Splices to single mode fibers with large modefield diameter required very low angle cleaves and attention must be paid to the cleaving process as described above. For solid fiber splices, a high temperature splice process is used to comp ...
... aligned with sub-µm precision to obtain maximum transmission. Splices to single mode fibers with large modefield diameter required very low angle cleaves and attention must be paid to the cleaving process as described above. For solid fiber splices, a high temperature splice process is used to comp ...
CHIRAL POLYMER PHOTODETECTOR
... Figure 1-11 Tetracene (left) and Pentacene (right) ........................................................................ 14 Figure 1-12 B6T (upper), BP3T (middle) and 3 tetrakis(oligothienyl)silanes (lower)11 ............... 15 Figure 1-13 An example of DPP-thiophene system....................... ...
... Figure 1-11 Tetracene (left) and Pentacene (right) ........................................................................ 14 Figure 1-12 B6T (upper), BP3T (middle) and 3 tetrakis(oligothienyl)silanes (lower)11 ............... 15 Figure 1-13 An example of DPP-thiophene system....................... ...
Fibre-Loop Ring-Down Spectroscopy Using Liquid Core Waveguides
... of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while ...
... of the light intensity in the cavity is measured, thereby rendering the techniques insensitive to light intensity fluctuations. Optical waveguides are used to build the optical cavities presented in this work. The geometries of such waveguides permit the use of very small liquid sample volumes while ...
György Dombi Gerda Szakonyi Authors
... The temperature of the sample is not needed to be monitored to correct the result with a temperature factor because the temperature is kept constant during the measurement. The instrument need not to be calibrated with solutions of known conductance as relative changes are being recorded. ...
... The temperature of the sample is not needed to be monitored to correct the result with a temperature factor because the temperature is kept constant during the measurement. The instrument need not to be calibrated with solutions of known conductance as relative changes are being recorded. ...
Fiber optic Fabry-Perot interferometer for
... and imaging fields due to fibers’ small size, kilometer range lengths, and flexibility. These characteristics are remarkable for endoscopic imaging and sensing devices. The fabrication of extra-long length fibers allows to design sensors with large interaction lengths that results in high sensitivit ...
... and imaging fields due to fibers’ small size, kilometer range lengths, and flexibility. These characteristics are remarkable for endoscopic imaging and sensing devices. The fabrication of extra-long length fibers allows to design sensors with large interaction lengths that results in high sensitivit ...
Handbook of Optical Filters
... 4 Most of this information is taken from the following excellent reference: Kasten (1989). 5 The first barrier filter to be used was a pale yellow coverslip, which protected the eye from hazardous radiation, but ...
... 4 Most of this information is taken from the following excellent reference: Kasten (1989). 5 The first barrier filter to be used was a pale yellow coverslip, which protected the eye from hazardous radiation, but ...
Waveguide Dispersion
... Lattice absorption through a crystal. The field in the wave oscillates the ions which consequently generate "mechanical" waves in the crystal; energy is thereby transferred from the wave to lattice vibrations. © 1999 S.O. Kasap, Optoelectronics (Prentice Hall) ...
... Lattice absorption through a crystal. The field in the wave oscillates the ions which consequently generate "mechanical" waves in the crystal; energy is thereby transferred from the wave to lattice vibrations. © 1999 S.O. Kasap, Optoelectronics (Prentice Hall) ...
K.C. Neuman and S.M. Block, "Optical Trapping"
... is a net momentum transfer to the particle from the incident photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. ...
... is a net momentum transfer to the particle from the incident photons. For an isotropic scatter, the resulting forces cancel in all but the forward direction, and an effective scattering cross section can be calculated for the object. For most conventional situations, the scattering force dominates. ...
Construction of a Calcium Matter-Wave Interferometer
... wave function was nonetheless split and recombined. The first true separated beam atom interferometer was published in 1991 by Carnal and Mlynek, who used narrow slits to split and recombine metastable helium atoms [8]. This was followed almost immediately by Pritchard, who used micro-fabricated dif ...
... wave function was nonetheless split and recombined. The first true separated beam atom interferometer was published in 1991 by Carnal and Mlynek, who used narrow slits to split and recombine metastable helium atoms [8]. This was followed almost immediately by Pritchard, who used micro-fabricated dif ...
EXPERIMENT 06 Helium Neon Laser
... these laser transitions lie even further within the infrared spectral range and cannot be detected with the silicon detector used in the experiment. They are not particularly suitable for experiments. Notice that these lines are originating from the same level as the visible lines and are therefore ...
... these laser transitions lie even further within the infrared spectral range and cannot be detected with the silicon detector used in the experiment. They are not particularly suitable for experiments. Notice that these lines are originating from the same level as the visible lines and are therefore ...
appel a projets recherche 2014 - lumat - Université Paris-Sud
... Ultrafast science requires ultra-steep gradients in time – down to the fs and as time scale – and in space – down to the Å scale – to coherently excite electronic/nuclear wave packets in a controlled manner, and to probe their temporal evolution. These gradients are ideally provided by fully control ...
... Ultrafast science requires ultra-steep gradients in time – down to the fs and as time scale – and in space – down to the Å scale – to coherently excite electronic/nuclear wave packets in a controlled manner, and to probe their temporal evolution. These gradients are ideally provided by fully control ...
Quasi-Single-Mode Fiber Transmission for Submarine Systems
... techniques that can be employed. In a direct approach, the OSNR penalty (compared to back-to-back transmission) at a given BER can be measured for linear transmission of a particular signal, and then compared to previously taken OSNR penalty data obtained for the same signal with well-known and cali ...
... techniques that can be employed. In a direct approach, the OSNR penalty (compared to back-to-back transmission) at a given BER can be measured for linear transmission of a particular signal, and then compared to previously taken OSNR penalty data obtained for the same signal with well-known and cali ...
DFB Quantum Cascade Laser Arrays The Harvard community has
... operation at room temperature [3], [4]. QCLs can be grown by metal–organic vapor phase epitaxy (MOVPE) [5] with quality comparable to the best devices grown by molecular beam epitaxy (MBE). Moreover, they can be designed with broadband gain, with full-width at half-maximum (FWHM) of more than 300 cm ...
... operation at room temperature [3], [4]. QCLs can be grown by metal–organic vapor phase epitaxy (MOVPE) [5] with quality comparable to the best devices grown by molecular beam epitaxy (MBE). Moreover, they can be designed with broadband gain, with full-width at half-maximum (FWHM) of more than 300 cm ...
The crystal structures of synthetics Fe2(SO4)3(H2O)5 and
... The amount of water, x, in the ferric sulfate reagent, was determined to be ∼6.75 by a thermogravimetric analysis. The solution from which Fe2(SO4)3(H2O)5 precipitated was prepared by mixing 1.52 mL water, 0.48 mL sulfuric acid, and 1.98 g of ferric sulfate. The solution was then kept at 90 °C for a ...
... The amount of water, x, in the ferric sulfate reagent, was determined to be ∼6.75 by a thermogravimetric analysis. The solution from which Fe2(SO4)3(H2O)5 precipitated was prepared by mixing 1.52 mL water, 0.48 mL sulfuric acid, and 1.98 g of ferric sulfate. The solution was then kept at 90 °C for a ...