Light Scattering of Semiconducting Nanoparticles
... of the scattered (incident) light, q is the wavevector transfered to the excitation. The energies of crystalline vibrations probed by Raman scattering are about <01 eV and those of the exciting visible laserlight are about 2.5 eV (corresponding to the wavelength L ≈ 500 nm). Therefore, from Eq. ( ...
... of the scattered (incident) light, q is the wavevector transfered to the excitation. The energies of crystalline vibrations probed by Raman scattering are about <01 eV and those of the exciting visible laserlight are about 2.5 eV (corresponding to the wavelength L ≈ 500 nm). Therefore, from Eq. ( ...
High luminance hybrid light guide plate for
... 10 October 2011 / Vol. 19, No. 21 / OPTICS EXPRESS 20079 ...
... 10 October 2011 / Vol. 19, No. 21 / OPTICS EXPRESS 20079 ...
Representation of Wavefront Aberrations
... The problem is that the eye is a closed system so it is difficult for a clinician to inspect the light rays and wavefronts once they enter the eye to see if they are perfect. For this reason, objective methods have been devised for measuring the optical aberrations of eyes using light that is reflec ...
... The problem is that the eye is a closed system so it is difficult for a clinician to inspect the light rays and wavefronts once they enter the eye to see if they are perfect. For this reason, objective methods have been devised for measuring the optical aberrations of eyes using light that is reflec ...
Quantitative spectroscopic photoacoustic imaging
... generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low) permits deeper light penetration and so greater imaging d ...
... generate sound waves.15–17 PA imaging usually uses light in the non-ionizing visible or near-infrared (NIR) parts of the spectrum because the NIR “window” (a range of wavelengths over which both water absorption and tissue scattering are low) permits deeper light penetration and so greater imaging d ...
WAVE OPTICS
... of the electric or magnetic fields (as described in Chap. 5, which covers the electromagnetic theory of light). This, and a relation between the optical power density and the wavefunction, constitute the postulates of the scalar wave model of light, hereafter called wave optics. The consequencesof t ...
... of the electric or magnetic fields (as described in Chap. 5, which covers the electromagnetic theory of light). This, and a relation between the optical power density and the wavefunction, constitute the postulates of the scalar wave model of light, hereafter called wave optics. The consequencesof t ...
Polarization studies in electromagnetic scattering by small Solar
... In remote-sensing studies, particles that are comparable to the wavelength exhibit characteristic features in electromagnetic scattering, especially in the degree of linear polarization. These features vary with the physical properties of the particles, such as shape, size, refractive index, and ori ...
... In remote-sensing studies, particles that are comparable to the wavelength exhibit characteristic features in electromagnetic scattering, especially in the degree of linear polarization. These features vary with the physical properties of the particles, such as shape, size, refractive index, and ori ...
Sub-wavelength grating for enhanced ring resonator biosensor
... scale [2, 3] for optical multiplexing [4], modulation [5], and biosensing [6]. While the large index contrast among the silicon waveguide, substrate, and cladding, helps to confine and guide the light, a portion of its electric field extends outside the waveguide as an evanescent field. This field i ...
... scale [2, 3] for optical multiplexing [4], modulation [5], and biosensing [6]. While the large index contrast among the silicon waveguide, substrate, and cladding, helps to confine and guide the light, a portion of its electric field extends outside the waveguide as an evanescent field. This field i ...
Portable Ultrafast Blue Light Sources Designed With Frequency
... Straightforward frequency doubling of near-infrared femtosecond lasers remains one of the simplest and most efficient access routes into the blue spectral region, due mainly to the inherently high-peak intensities of the ultrashort laser pulses. While conventional titanium–sapphire lasers have long ...
... Straightforward frequency doubling of near-infrared femtosecond lasers remains one of the simplest and most efficient access routes into the blue spectral region, due mainly to the inherently high-peak intensities of the ultrashort laser pulses. While conventional titanium–sapphire lasers have long ...
`Singular Optics`, International Journal of Optics, Vol.2012
... issue. There are two review articles “Interferometry with vortices” and “Experiments on linear and nonlinear localization of optical vortices in optically induced photonic lattices” and nine research articles. The paper by P. Senthilkumaran et al. reviews how interference phenomena involving vortice ...
... issue. There are two review articles “Interferometry with vortices” and “Experiments on linear and nonlinear localization of optical vortices in optically induced photonic lattices” and nine research articles. The paper by P. Senthilkumaran et al. reviews how interference phenomena involving vortice ...
Resolution scaling in STED microscopy
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
... dark and bright states, to achieve such resolutions have since been demonstrated [8-13]. At the same time, STED has been applied to a multitude of imaging tasks [14-17] mainly in biology and more recently, STED microscopes have become commercially available. The resolution achieved by such a far-fie ...
Generation of Repumping Light for Ultracold Strontium Experiments
... quantum mechanical systems. Ultracold atom systems are also ideal for investigating the quantum dynamics of single- and multi-component systems. Additionally, they can be used in quantum-limited force sensing, applicable to the study of nonNewtonian gravitational interactions at small length scales. ...
... quantum mechanical systems. Ultracold atom systems are also ideal for investigating the quantum dynamics of single- and multi-component systems. Additionally, they can be used in quantum-limited force sensing, applicable to the study of nonNewtonian gravitational interactions at small length scales. ...
Analysis of Tilted Grating Etalon for DWDM Demultiplexer Sommart Sang-Ngern, Non-member
... outside etalon is 1, the angle between z axis and z axis is 0.645 rad, internal angle is 0.2 degree and coupling coefficient for period grating is 0.2/L. Fig.7 shows the transmission spectral of TGE as a function of wavelength in the range of 1350-1600 nm when the incident angle is varied 0-50 degre ...
... outside etalon is 1, the angle between z axis and z axis is 0.645 rad, internal angle is 0.2 degree and coupling coefficient for period grating is 0.2/L. Fig.7 shows the transmission spectral of TGE as a function of wavelength in the range of 1350-1600 nm when the incident angle is varied 0-50 degre ...
Optically Pumped Solid-State Lasers
... the ground state 4 I9/2 into the 4 F5/2 level followed by transfer to the upper laser level 4 F3/2 . This consists of a number of closely spaced levels. Two of these, labelled R2 and R1 in Fig. (8.5), serve as the upper levels of the closely spaced transitions 2 and 1 . The stronger of these, 2 , ha ...
... the ground state 4 I9/2 into the 4 F5/2 level followed by transfer to the upper laser level 4 F3/2 . This consists of a number of closely spaced levels. Two of these, labelled R2 and R1 in Fig. (8.5), serve as the upper levels of the closely spaced transitions 2 and 1 . The stronger of these, 2 , ha ...
Fourier-domain holography in photorefractive quantum-well films
... defects that limit the sensitivity and dynamic range of photorefractive holography because of scattered background. The dynamic range 共without any spatial filtering兲 was reported to be 45 dB for the current generation of PRQW devices and is expected to be better than 90 dB for ideal PRQW devices wit ...
... defects that limit the sensitivity and dynamic range of photorefractive holography because of scattered background. The dynamic range 共without any spatial filtering兲 was reported to be 45 dB for the current generation of PRQW devices and is expected to be better than 90 dB for ideal PRQW devices wit ...
ChromatiC dispersion
... Dispersion control is also important in lasers that produce short pulses. The overall dispersion of the optical resonator is a major factor in determining the duration of the pulses emitted by the laser. A pair of prisms can be arranged to produce net negative dispersion, which can be used to balanc ...
... Dispersion control is also important in lasers that produce short pulses. The overall dispersion of the optical resonator is a major factor in determining the duration of the pulses emitted by the laser. A pair of prisms can be arranged to produce net negative dispersion, which can be used to balanc ...
Estimation of longitudinal resolution in optical coherence
... A general definition of longitudinal resolution accepted in optical coherence imaging is half of the coherence length of the source 共i.e., lcFWHM兾2 or lc兾 2兲.3,13 The choice of the FWHM of 兩␥共兲兩 for coherence length, most commonly chosen as mentioned above, is historical in nature and derived from ...
... A general definition of longitudinal resolution accepted in optical coherence imaging is half of the coherence length of the source 共i.e., lcFWHM兾2 or lc兾 2兲.3,13 The choice of the FWHM of 兩␥共兲兩 for coherence length, most commonly chosen as mentioned above, is historical in nature and derived from ...
Experimental Verification of n = 0 Structures for Visible Light
... waveguides show cutoff at a wavelength that monotonically decreases with waveguide width. At the cutoff wavelength, the CL emission is strongly enhanced. (j) Simulation results analogous to (i). ...
... waveguides show cutoff at a wavelength that monotonically decreases with waveguide width. At the cutoff wavelength, the CL emission is strongly enhanced. (j) Simulation results analogous to (i). ...
Performance of synchronous optical receivers using atmospheric
... [5,6]. Unfortunately, none of these prior works have resulted in an accurate statistical description of the performance of phase-compensated homodyne or heterodyne systems. Recently, a full-wave simulation of beam propagation has been used to examine the uncertainty inherent to the process of optica ...
... [5,6]. Unfortunately, none of these prior works have resulted in an accurate statistical description of the performance of phase-compensated homodyne or heterodyne systems. Recently, a full-wave simulation of beam propagation has been used to examine the uncertainty inherent to the process of optica ...
chapter 5: effect of the optical properties of the epidermis on laser
... density’ or fluence rate deeper in the skin. Consequently the loss in laser light intensity due to absorption depends on both the absorption coefficient and the path length through the medium (in this case the epidermis). As such the epidermal thickness is an important parameter. At present there is ...
... density’ or fluence rate deeper in the skin. Consequently the loss in laser light intensity due to absorption depends on both the absorption coefficient and the path length through the medium (in this case the epidermis). As such the epidermal thickness is an important parameter. At present there is ...
High-Q Microresonators as Lasing Elements for Silicon Photonics
... precision and depth of their teachings on the subject. As part of the EPIC program, Axel Scherer provided us with essential materials and processing capabilities, and Eli Yablonovitch gave us unwavering encouragement and insightful advice on the complex nature of silicon surfaces. I also thank Joe S ...
... precision and depth of their teachings on the subject. As part of the EPIC program, Axel Scherer provided us with essential materials and processing capabilities, and Eli Yablonovitch gave us unwavering encouragement and insightful advice on the complex nature of silicon surfaces. I also thank Joe S ...
Gradient Index Optics at DARPA - Institute for Defense Analyses
... solved after more than 1,500 years of investigation. In 1621, Willebrord Snell was credited with experimentally discovering the law of refraction, although this discovery was uncovered in the unpublished papers of Thomas Harriot long after his death in 1621. In 1637, Descartes published the present ...
... solved after more than 1,500 years of investigation. In 1621, Willebrord Snell was credited with experimentally discovering the law of refraction, although this discovery was uncovered in the unpublished papers of Thomas Harriot long after his death in 1621. In 1637, Descartes published the present ...
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.