
Multi-photon absorption and third-order
... ranged from 38 to 123 µm for different wavelengths. As shown, α3 and α4 present nonlinear absorption coefficients for 3PA and 4PA. The peak intensity I00 at the sample is determined as I00 = laser_power / [(πω02) × pulse_repetitions × pulse_width] × 40%, due to Fresnel reflection and back scattering ...
... ranged from 38 to 123 µm for different wavelengths. As shown, α3 and α4 present nonlinear absorption coefficients for 3PA and 4PA. The peak intensity I00 at the sample is determined as I00 = laser_power / [(πω02) × pulse_repetitions × pulse_width] × 40%, due to Fresnel reflection and back scattering ...
X-Ray standing waves for investigation of periodic multilayers.
... From Equations (1) and (5), one can conclude that for Bragg diffraction the XSW periodicity is equal to the lattice d-spacing of the H = hkl diffraction planes; that is, D = dH. In the following discussion, we will assume the most common case of σpolarized symmetrical Bragg diffraction from a semi-i ...
... From Equations (1) and (5), one can conclude that for Bragg diffraction the XSW periodicity is equal to the lattice d-spacing of the H = hkl diffraction planes; that is, D = dH. In the following discussion, we will assume the most common case of σpolarized symmetrical Bragg diffraction from a semi-i ...
Diffractive read-out of optical disks
... 2 Historic overview of video and audio recording on optical media Optical data storage uses the principle of the point-by-point scanning of an object to extract the recorded information on the disc. In another context, such an approach was used in a somewhat primitive way in the ‘flying-spot’ film s ...
... 2 Historic overview of video and audio recording on optical media Optical data storage uses the principle of the point-by-point scanning of an object to extract the recorded information on the disc. In another context, such an approach was used in a somewhat primitive way in the ‘flying-spot’ film s ...
High Performance Sensor Data with Rotary Interfaces
... Multiplexers come in two “flavors:” time division and wave division. Time Division Multiplexing (TDM) is accomplished by sampling discrete signals and then assigning discrete sampled parts of each signal a time slot (thus “time” division multiplexing) in an outgoing, higher speed data stream. This s ...
... Multiplexers come in two “flavors:” time division and wave division. Time Division Multiplexing (TDM) is accomplished by sampling discrete signals and then assigning discrete sampled parts of each signal a time slot (thus “time” division multiplexing) in an outgoing, higher speed data stream. This s ...
22-Test Talk
... mode beam, for example, has an M2 of 1.0; a laser with an M2 of 1.2 will produce a spot width 9.5% larger than theoretical. It is not surprising, then, that the parameter is widely used to characterize beam quality. What is surprising is that many laser researchers and test engineers do not seem to ...
... mode beam, for example, has an M2 of 1.0; a laser with an M2 of 1.2 will produce a spot width 9.5% larger than theoretical. It is not surprising, then, that the parameter is widely used to characterize beam quality. What is surprising is that many laser researchers and test engineers do not seem to ...
Compact Magnetic Antennas for Directional Excitation of Surface Plasmons Yongmin Liu, Stefano Palomba,
... bottom objective provides the measurement of the refracted angle and the direction of the propagating SPP wave at the air− gold interface. The images at the object plane and the Fourier plane are both taken by standard charge-coupled devices (CCD). We fabricate the nanoantennas by the standard elect ...
... bottom objective provides the measurement of the refracted angle and the direction of the propagating SPP wave at the air− gold interface. The images at the object plane and the Fourier plane are both taken by standard charge-coupled devices (CCD). We fabricate the nanoantennas by the standard elect ...
Displacement Measuring Interferometry
... an acousto-optic modulator (AOM) to produce the two mutually orthogonal linearly polarized frequency-shifted beams arranged to overlap and emerge parallel to one another from the laser by using a second birefringent prism (not shown).47 The frequency difference Δf corresponds to the drive frequency ...
... an acousto-optic modulator (AOM) to produce the two mutually orthogonal linearly polarized frequency-shifted beams arranged to overlap and emerge parallel to one another from the laser by using a second birefringent prism (not shown).47 The frequency difference Δf corresponds to the drive frequency ...
Optical Isolation Can Occur In Linear And Passive Silicon
... the forward and backward transmission efficiencies of the diode are very much different at the wavelengths around 1,550 nm, with a signal contrast reaching a high value of about 89%. It is the central issue of the current paper to further discuss the optical isolation performance of this structure a ...
... the forward and backward transmission efficiencies of the diode are very much different at the wavelengths around 1,550 nm, with a signal contrast reaching a high value of about 89%. It is the central issue of the current paper to further discuss the optical isolation performance of this structure a ...
An Optical Pulse Generator from a Sinusoidal Optical Signal Using
... SOA. The SPM causes spectral enlargement and distortion of input signal and is behind the mechanism of pulse generation. Since the aforementioned ± ΔL setting of the loop delay lines is carried out, the Δφ phase-shift is imprinted in different parts of the CW and CCW analogue waveforms. By symmetric ...
... SOA. The SPM causes spectral enlargement and distortion of input signal and is behind the mechanism of pulse generation. Since the aforementioned ± ΔL setting of the loop delay lines is carried out, the Δφ phase-shift is imprinted in different parts of the CW and CCW analogue waveforms. By symmetric ...
surface topology reconstruction from the white light interferogram by
... include its non-intrusiveness, high resolution, and the possibility to examine step-like surfaces ...
... include its non-intrusiveness, high resolution, and the possibility to examine step-like surfaces ...
Plane-wave scattering by a dielectric circular cylinder
... stability with respect to the input data are obtained. These characteristics make the technique attractive for a wide range of applications. In this paper we intend to generalize the aforementioned approach to the case of a dielectric cylinder, characterized by a refractive index n c , which can als ...
... stability with respect to the input data are obtained. These characteristics make the technique attractive for a wide range of applications. In this paper we intend to generalize the aforementioned approach to the case of a dielectric cylinder, characterized by a refractive index n c , which can als ...
Calculations of light scattering from isolated and interacting metallic
... finite-difference time domain [24], dyadic Green’s function technique [9,25], and various implementations of the boundary integral methods [8,26–28] based on Green’s ...
... finite-difference time domain [24], dyadic Green’s function technique [9,25], and various implementations of the boundary integral methods [8,26–28] based on Green’s ...
Comparison of two-color methods based on wavelength and
... The refractive index of air can significantly affect length measurements because the refractive index of air is a function of several air parameters such as temperature, pressure, humidity, and CO2 concentration. For example, when the temperature increases by 1◦ C, the optical length decreases by ap ...
... The refractive index of air can significantly affect length measurements because the refractive index of air is a function of several air parameters such as temperature, pressure, humidity, and CO2 concentration. For example, when the temperature increases by 1◦ C, the optical length decreases by ap ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... applications of microstrip technology is the optically controlled microwaveattenuators [5].Such optical control is based on the fact that when photons of energy greater than the band gap are incident on the silicon substrate, electron-hole plasma created by light absorption [6]. The optically genera ...
... applications of microstrip technology is the optically controlled microwaveattenuators [5].Such optical control is based on the fact that when photons of energy greater than the band gap are incident on the silicon substrate, electron-hole plasma created by light absorption [6]. The optically genera ...
X-ray phase contrast microscopy at 300 nm
... On the other hand, the propagation-based techniques [5–7] are usually less sensitive to slight phase gradients but they can be performed with simpler experimental setup, and they can be scaled down from synchrotron sources to laboratory sources. The main effects contributing to the achievable contra ...
... On the other hand, the propagation-based techniques [5–7] are usually less sensitive to slight phase gradients but they can be performed with simpler experimental setup, and they can be scaled down from synchrotron sources to laboratory sources. The main effects contributing to the achievable contra ...
P - University of South Florida
... Three-dimensional microscopic imaging that reveals the tomographic structure of biological tissues or other materials has a variety of applications in clinical and laboratory studies. Recently developed optical coherence tomography [1] (OCT) is a scanning microscopic technique that is suitable for h ...
... Three-dimensional microscopic imaging that reveals the tomographic structure of biological tissues or other materials has a variety of applications in clinical and laboratory studies. Recently developed optical coherence tomography [1] (OCT) is a scanning microscopic technique that is suitable for h ...