Radiative Transfer Theory - UCL Department of Geography
... both optical and microwave wavelengths. Because of the tendency of researchers to specialise in modelling and applications in either the optical or microwave domain, education in these areas tends to lead to a lack of appreciation in both fields of the commonality of aspects of available approaches. ...
... both optical and microwave wavelengths. Because of the tendency of researchers to specialise in modelling and applications in either the optical or microwave domain, education in these areas tends to lead to a lack of appreciation in both fields of the commonality of aspects of available approaches. ...
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 ...
Lecture Notes
... The physics of diffraction plays an important role in many scientific and engineering fields. In this chapter we explain diffraction using the wave nature of light and discuss several applications of diffraction in science and technology. ...
... The physics of diffraction plays an important role in many scientific and engineering fields. In this chapter we explain diffraction using the wave nature of light and discuss several applications of diffraction in science and technology. ...
Wigner Distribution in Optics
... In 1932 Wigner1 introduced a distribution function in mechanics that permitted a description of mechanical phenomena in a phase space. Such a Wigner distribution was introduced in optics by Dolin2 and Walther3, 4 in the sixties, to relate partial coherence to radiometry. A few years later, the Wigne ...
... In 1932 Wigner1 introduced a distribution function in mechanics that permitted a description of mechanical phenomena in a phase space. Such a Wigner distribution was introduced in optics by Dolin2 and Walther3, 4 in the sixties, to relate partial coherence to radiometry. A few years later, the Wigne ...
Distributed Temperature Sensing Using Stimulated
... a multimode fiber or a thin-core fiber section and recoupled back to the core mode by the TFBG. A special reflection spectrum with recoupling of cladding mode is then obtained to exploit the applications of evanescent waves in an optical fiber. Experimental results of the sensor to measure the exter ...
... a multimode fiber or a thin-core fiber section and recoupled back to the core mode by the TFBG. A special reflection spectrum with recoupling of cladding mode is then obtained to exploit the applications of evanescent waves in an optical fiber. Experimental results of the sensor to measure the exter ...
Fast Modulation of Terahertz Quantum Cascade
... the perpendicular one. In order to excite the plasmonic resonances of these antennas the length a, as shown in Figure 1b, should correspond to ∼ m·λsp/2·neff where λsp is the vacuum wavelength of the resonant radiation, neff is the effective refractive index of the plasmonic mode supported by the met ...
... the perpendicular one. In order to excite the plasmonic resonances of these antennas the length a, as shown in Figure 1b, should correspond to ∼ m·λsp/2·neff where λsp is the vacuum wavelength of the resonant radiation, neff is the effective refractive index of the plasmonic mode supported by the met ...
The Strontium Optical Lattice Clock
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
The Strontium Optical Lattice Clock
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
... is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressive frequency measurement accuracy, with fractional uncertainties below the 10−15 ...
- City Research Online
... shown in Fig. 8. The effective index variation of the first Hy1 and second Hy2 modes are shown by a dashed and a solid line. It can be noted that the effective index of the fundamental core mode is higher than that shown in Fig.2, as bending radius is now significantly reduced. Similar as shown in F ...
... shown in Fig. 8. The effective index variation of the first Hy1 and second Hy2 modes are shown by a dashed and a solid line. It can be noted that the effective index of the fundamental core mode is higher than that shown in Fig.2, as bending radius is now significantly reduced. Similar as shown in F ...
MODELLING OF PHOTONIC COMPONENTS BASED ON ÷(3) NONLINEAR PHOTONIC CRYSTALS Ivan Maksymov
... discussed. The basics of the conventional FDTD algorithm are outlined including such important issues as the discretization of the computational domain, the stability condition, the initial and the boundary conditions, the approach for computing the transmission and reflection spectra and the models ...
... discussed. The basics of the conventional FDTD algorithm are outlined including such important issues as the discretization of the computational domain, the stability condition, the initial and the boundary conditions, the approach for computing the transmission and reflection spectra and the models ...
full text pdf
... wavelength. The bandwidth is up to the 400 nm. In the nine−core fibre, d2 is the crucial parameter and it affects the coupling characteristics. Next, we analyse the effect of the d2 on the properties of the wavelength selective couplers. When a Gaussian beam is launched into the cen− tral core and p ...
... wavelength. The bandwidth is up to the 400 nm. In the nine−core fibre, d2 is the crucial parameter and it affects the coupling characteristics. Next, we analyse the effect of the d2 on the properties of the wavelength selective couplers. When a Gaussian beam is launched into the cen− tral core and p ...
Distance Sensing with Dynamic Speckles
... Distance (along with time) is one of the most important features of our world, reflecting the essence of the space-time continuum. In animated nature even before the arrival of homo sapiens, distance and size were central concerns in the successful evolution and survival of living beings in a hostil ...
... Distance (along with time) is one of the most important features of our world, reflecting the essence of the space-time continuum. In animated nature even before the arrival of homo sapiens, distance and size were central concerns in the successful evolution and survival of living beings in a hostil ...
LASER LIGHT SCATTERING FOR INVESTIGATION OF PARTICLE
... developed and monitored by the use of laser diffraction particle size analyzers. The speed, consistency, and ease of use have made it the most popular method for process control[6]. In Ethiopia, coffee grading is conducted through the combination of two methods [3]. They are green coffee (raw bean) ...
... developed and monitored by the use of laser diffraction particle size analyzers. The speed, consistency, and ease of use have made it the most popular method for process control[6]. In Ethiopia, coffee grading is conducted through the combination of two methods [3]. They are green coffee (raw bean) ...
Alternative Beam Splitter/Compensator Configurations for Reduction
... (FTS) splits incoming electromagnetic radiation into two nearly identical beams that travel different paths through the interferometer before recombining at a single detector [Figure 1]. One of the paths incorporates a movable mirror which allows its optical path length to be changed relative to the ...
... (FTS) splits incoming electromagnetic radiation into two nearly identical beams that travel different paths through the interferometer before recombining at a single detector [Figure 1]. One of the paths incorporates a movable mirror which allows its optical path length to be changed relative to the ...
Bose–Einstein condensation of atomic gases
... evaporation time corresponding to a few hundred elastic collisions per atom. During the evaporation process the number of atoms is divided by a factor 100 to 1000. The number of atoms at the condensation point ranges between 103 and 108 , depending on the initial loading of the magnetic trap, on the ...
... evaporation time corresponding to a few hundred elastic collisions per atom. During the evaporation process the number of atoms is divided by a factor 100 to 1000. The number of atoms at the condensation point ranges between 103 and 108 , depending on the initial loading of the magnetic trap, on the ...
Hyperbolic metamaterials and their applications Ferrari , , Dominic Lepage
... the second waves polarized in a plane containing the optical axis (extraordinary or TM waves). The situation changes substantially if we assume an extreme anisotropy, namely if one between ε ? and εzz is negative. Media with such an optical signature are termed indefinite from the point of view of al ...
... the second waves polarized in a plane containing the optical axis (extraordinary or TM waves). The situation changes substantially if we assume an extreme anisotropy, namely if one between ε ? and εzz is negative. Media with such an optical signature are termed indefinite from the point of view of al ...
Optical coherence tomography (OCT): a review
... profile analogous to an A-mode ultrasound scan. It follows determines the axial from (9) that the spatial extent of width of the point-spread function; therefore, in this onedimensional model the coherence length is an appropriate measure of the axial resolution of the OCT system. In the more genera ...
... profile analogous to an A-mode ultrasound scan. It follows determines the axial from (9) that the spatial extent of width of the point-spread function; therefore, in this onedimensional model the coherence length is an appropriate measure of the axial resolution of the OCT system. In the more genera ...
3D locations of the object directly from in
... 1. INTRODUCTION Digital holography was proposed by Goodman et al. in 1960s1. From then on, this technology was constantly developed, allowing acquisition of three-dimensional information about an object by using a CCD camera and a computer. In–line digital holography 2 uses the same beam as the refe ...
... 1. INTRODUCTION Digital holography was proposed by Goodman et al. in 1960s1. From then on, this technology was constantly developed, allowing acquisition of three-dimensional information about an object by using a CCD camera and a computer. In–line digital holography 2 uses the same beam as the refe ...
