Nonlinear optics in daily life
... Practical optical parametric oscillators (OPOs) have come of age with the advent of ultrashort pulses for high peak power, new and effective nonlinear crystals, and periodic poling for phase-matching. Robust, turn-key and/or computer-operated, OPO’s are now widely used for spectroscopy, as pointed o ...
... Practical optical parametric oscillators (OPOs) have come of age with the advent of ultrashort pulses for high peak power, new and effective nonlinear crystals, and periodic poling for phase-matching. Robust, turn-key and/or computer-operated, OPO’s are now widely used for spectroscopy, as pointed o ...
chapter 6 optical amplifiers
... •They are highly polarisation sensitive. •They can produce severe crosstalk when multiple optical channels are amplified. This latter characteristic makes them unusable as amplifiers in WDM systems but gives them the ability to act as wavelength changers and as simple logic gates in optical network ...
... •They are highly polarisation sensitive. •They can produce severe crosstalk when multiple optical channels are amplified. This latter characteristic makes them unusable as amplifiers in WDM systems but gives them the ability to act as wavelength changers and as simple logic gates in optical network ...
A short introduction to light and electron microscopy
... examined (note: compare the probe size and resolution of electron microscopes). As an approximation, the resolution limit of the light microscope with an oil immersion objective is about one-half of the wavelength of the light employed. Knowledge of the properties of light is important in selecting ...
... examined (note: compare the probe size and resolution of electron microscopes). As an approximation, the resolution limit of the light microscope with an oil immersion objective is about one-half of the wavelength of the light employed. Knowledge of the properties of light is important in selecting ...
Optical diffraction tomography for high resolution live cell imaging
... refractive index distribution within the cell into intensity variations. However, these techniques do not provide quantitative maps of phase change. More advanced phase microscopy techniques have been developed to record quantitative phase images of specimen-induced phase changes [3-7]. These techni ...
... refractive index distribution within the cell into intensity variations. However, these techniques do not provide quantitative maps of phase change. More advanced phase microscopy techniques have been developed to record quantitative phase images of specimen-induced phase changes [3-7]. These techni ...
Sub-cycle Electron Dynamics Probed by Isolated
... chemical reaction dynamics and outcomes. Here, we present attosecond transient absorption [1] measurements of bound state dynamics in helium atoms and hydrogen molecules, uncovering fast laser-induced dynamics in the electronic and vibrational wavepacket motion which evolve on the attosecond to few- ...
... chemical reaction dynamics and outcomes. Here, we present attosecond transient absorption [1] measurements of bound state dynamics in helium atoms and hydrogen molecules, uncovering fast laser-induced dynamics in the electronic and vibrational wavepacket motion which evolve on the attosecond to few- ...
Optical fiber communication
... shifted and loss minimized at a wavelength around1550 nm and which is optimized for use in the 1500-1600 nm region. ...
... shifted and loss minimized at a wavelength around1550 nm and which is optimized for use in the 1500-1600 nm region. ...
Characteristics of Terahertz Photonic crystal fiber using core mode
... C = velocity of light, Re (Neff) = Real part of effective refractive index of HE11 mode. In this model we get nearly flat dispersion. This type of fiber is useful in communication and transmission. The value for dispersion is 0.085 ps/nm.km for wavelength 150 µm and 0.11 ps/nm.km for wavelength 220 ...
... C = velocity of light, Re (Neff) = Real part of effective refractive index of HE11 mode. In this model we get nearly flat dispersion. This type of fiber is useful in communication and transmission. The value for dispersion is 0.085 ps/nm.km for wavelength 150 µm and 0.11 ps/nm.km for wavelength 220 ...
Amplitude and Phase of Tightly Focused Laser Beams in Turbid Media
... the focal field. Diffraction theory models the focal volume as the spatial interference of the electric field and is sufficient to describe the propagation of a focused laser beam in homogeneous media [1]. However, biological samples are composed of cellular and extracellular components of varying s ...
... the focal field. Diffraction theory models the focal volume as the spatial interference of the electric field and is sufficient to describe the propagation of a focused laser beam in homogeneous media [1]. However, biological samples are composed of cellular and extracellular components of varying s ...
Overview
... Now, what is the flux from a small segment annulus? Assume “it” is a point source. Then integrate over all small segments ...
... Now, what is the flux from a small segment annulus? Assume “it” is a point source. Then integrate over all small segments ...
Near-field thermal transport in a nanotip under laser irradiation
... Another aspect of interest is the temperature in the tip due to the laser induced heating. The temperature profiles along the aluminum-coated fiber tip due to local heating were calculated or measured by several groups in the mid-1990s [43–48]. The heating was shown to be strongly dependent on the t ...
... Another aspect of interest is the temperature in the tip due to the laser induced heating. The temperature profiles along the aluminum-coated fiber tip due to local heating were calculated or measured by several groups in the mid-1990s [43–48]. The heating was shown to be strongly dependent on the t ...
laser
... positron source of ILC, have a good potential to be expanded into very wide, various, and interesting field. For example, not only for physics and accelerator applications, medical and industrial applications are expected. In addition to high power laser and external cavity developments, recently, f ...
... positron source of ILC, have a good potential to be expanded into very wide, various, and interesting field. For example, not only for physics and accelerator applications, medical and industrial applications are expected. In addition to high power laser and external cavity developments, recently, f ...
Optical Measurements of Pollution Dispersion at
... Standard [4]. We find that, for exposure times of less than 10 s, the MPE for the cornea is given as 10 kJ m-2, while for continuous viewing it is 1 kW m-2 (i.e. equivalent to the intensity of bright sunlight). The beam is output from a 50 mm objective lens and has a width at this point of about 30 ...
... Standard [4]. We find that, for exposure times of less than 10 s, the MPE for the cornea is given as 10 kJ m-2, while for continuous viewing it is 1 kW m-2 (i.e. equivalent to the intensity of bright sunlight). The beam is output from a 50 mm objective lens and has a width at this point of about 30 ...
Low atmospheric density measurement based on Rayleigh
... trations for combustion flows, which are of great guiding significance for a theoretical design and practical application of the high-speed flight vehicle. In particle image velocimetry (PIV) [6], the fluid motion is made visible by adding small tracer particles to infer the flow velocity field. Met ...
... trations for combustion flows, which are of great guiding significance for a theoretical design and practical application of the high-speed flight vehicle. In particle image velocimetry (PIV) [6], the fluid motion is made visible by adding small tracer particles to infer the flow velocity field. Met ...
A light scattering study of non equilibrium fluctuations
... ear polarizer after the cell (P2) allows us to adapt the average transmitted light intensity. The detection plane is located at about z = 26 cm from the sample plane. As a sensor, we use a charge coupled device (CCD4000, Vosskühler, Germany) with 2048 × 2048 square pixels each of size 7.4 × 7.4 μm2 ...
... ear polarizer after the cell (P2) allows us to adapt the average transmitted light intensity. The detection plane is located at about z = 26 cm from the sample plane. As a sensor, we use a charge coupled device (CCD4000, Vosskühler, Germany) with 2048 × 2048 square pixels each of size 7.4 × 7.4 μm2 ...
Surface Plasmon Interference Nanolithography
... and the contrast. Even if this cavity is completely offresonance (L ) 2100 nm, for instance), the interference intensity contrast is still as high as 0.4 at the grating edges. As indicated earlier, the wavelength of the surface plasmon is sensitive to its frequency, therefore the resolution of SPIN ...
... and the contrast. Even if this cavity is completely offresonance (L ) 2100 nm, for instance), the interference intensity contrast is still as high as 0.4 at the grating edges. As indicated earlier, the wavelength of the surface plasmon is sensitive to its frequency, therefore the resolution of SPIN ...
Title Magnetic Light-Matter Interactions in a Photonic Crystal
... the cavity resonance: as the resonance wavelength shifts away from the laser wavelength, there is less coupling from the waveguide to the cavity. Less coupling, in turn, reduces the overall losses that the light experiences in the waveguide-cavity system and, thus, increases the transmittance at r0 ...
... the cavity resonance: as the resonance wavelength shifts away from the laser wavelength, there is less coupling from the waveguide to the cavity. Less coupling, in turn, reduces the overall losses that the light experiences in the waveguide-cavity system and, thus, increases the transmittance at r0 ...
1 - www2
... applications in welding, cutting, laser fusion, etc. Figure 1.3 shows how the intensity of laser beams has increased every year. At intensities of 1021 W/m2, the electric fields become so high that the electrons accelerate to relativistic velocities (approaching that of light) and at even higher lig ...
... applications in welding, cutting, laser fusion, etc. Figure 1.3 shows how the intensity of laser beams has increased every year. At intensities of 1021 W/m2, the electric fields become so high that the electrons accelerate to relativistic velocities (approaching that of light) and at even higher lig ...
Microscopy - Frank`s Hospital Workshop
... system found on inverted microscopes for use in cell culture. Oblique illumination suffers from the same limitations as bright field microscopy (low contrast of many biological samples; low apparent resolution due to out of focus objects), but may highlight otherwise invisible structures. Dark field ...
... system found on inverted microscopes for use in cell culture. Oblique illumination suffers from the same limitations as bright field microscopy (low contrast of many biological samples; low apparent resolution due to out of focus objects), but may highlight otherwise invisible structures. Dark field ...
A Fast Optical Propagation Technique for Modeling
... simulation of the GLV, we examine one optical pixel. A projected pixel is diffracted from a GLV composed of 4 ribbons, two stationary and two that are movable [1]. Each ribbon has a length of 20 µm and a width of 5 µm. Ideally, there is no gap between the ribbons, however, in reality, a gap is prese ...
... simulation of the GLV, we examine one optical pixel. A projected pixel is diffracted from a GLV composed of 4 ribbons, two stationary and two that are movable [1]. Each ribbon has a length of 20 µm and a width of 5 µm. Ideally, there is no gap between the ribbons, however, in reality, a gap is prese ...
Optical fiber sensors
... Circulator Definition: a passive three-port device that couple light from Port 1 to 2 and Port 2 to 3 and have high isolation in other directions. ...
... Circulator Definition: a passive three-port device that couple light from Port 1 to 2 and Port 2 to 3 and have high isolation in other directions. ...
Plasmonic orbital angular momentum manipulation through
... Surface plasmon polaritons (SPP) are electromagnetic surface modes trapped at metal/dielectric interface because of their strong interaction with free electrons of the metal [1]. The most attractive characteristics of SPP are high localization and remarkable field enhancement in nature, allowing th ...
... Surface plasmon polaritons (SPP) are electromagnetic surface modes trapped at metal/dielectric interface because of their strong interaction with free electrons of the metal [1]. The most attractive characteristics of SPP are high localization and remarkable field enhancement in nature, allowing th ...
on line measurement of oxygen
... One of the first signs that O2 is a little odd was reported in 1891 by the Scottish Chemist Sir James Dewar, who found that oxygen was magnetic and managed to attract liquid oxygen to the poles of a magnet. Robert Mulliken (Ref 4) finally explained why oxygen was magnetic using recently developed qu ...
... One of the first signs that O2 is a little odd was reported in 1891 by the Scottish Chemist Sir James Dewar, who found that oxygen was magnetic and managed to attract liquid oxygen to the poles of a magnet. Robert Mulliken (Ref 4) finally explained why oxygen was magnetic using recently developed qu ...