Kogelnik and Li
... The real part of P represents a phase shift differenceCP between the Gaussian beam and an ideal plane wave, while the imaginary part produces an amplitude factor WO/W which givesthe expected intensity decreaseon the axis due to the expansion of the beam. With these results for the fundamental Gaussi ...
... The real part of P represents a phase shift differenceCP between the Gaussian beam and an ideal plane wave, while the imaginary part produces an amplitude factor WO/W which givesthe expected intensity decreaseon the axis due to the expansion of the beam. With these results for the fundamental Gaussi ...
Document
... shown in Table 1. The use of coherent SR light is active in Japan, so it is included in the table. Table 1 shows necessary information for users, such as tunable wavelength range, pulse length, repetition frequency, pulse power, average power, and present status. Data includes both planned and exper ...
... shown in Table 1. The use of coherent SR light is active in Japan, so it is included in the table. Table 1 shows necessary information for users, such as tunable wavelength range, pulse length, repetition frequency, pulse power, average power, and present status. Data includes both planned and exper ...
Demonstration of a linear optical true
... each beam makes 20 bounces, then a single MEMS micromirror array having a 400 ⫻ 600 pixel array can in principle control 400*600兾20 ⫽ 12,000 antennas. The ability to handle large numbers of light beams in a single device is a big advantage of the White cell approach, especially for controlling large ...
... each beam makes 20 bounces, then a single MEMS micromirror array having a 400 ⫻ 600 pixel array can in principle control 400*600兾20 ⫽ 12,000 antennas. The ability to handle large numbers of light beams in a single device is a big advantage of the White cell approach, especially for controlling large ...
Rapid fabrication of 3D terahertz split ring resonator arrays by novel
... 45 mW of power depending on the thickness of the sacrificial layer for 400 or 800 ms while the sample with focus 8 µm above the grating was performed at 75 mW for 8.1 s. Structures fabricated with green light were made with 800 ms exposures at 85 mW. The lens used was a 40X objective of numerical ap ...
... 45 mW of power depending on the thickness of the sacrificial layer for 400 or 800 ms while the sample with focus 8 µm above the grating was performed at 75 mW for 8.1 s. Structures fabricated with green light were made with 800 ms exposures at 85 mW. The lens used was a 40X objective of numerical ap ...
Microwave frequency generation using a dual
... The frequencies of the two beat signals also varied slightly due to environmental temperature variations, but could be stabilized by isolating the laser from the latter perturbations. We also measured the dependence of the beat frequencies on laser pump power. It was found that increasing the 980 nm ...
... The frequencies of the two beat signals also varied slightly due to environmental temperature variations, but could be stabilized by isolating the laser from the latter perturbations. We also measured the dependence of the beat frequencies on laser pump power. It was found that increasing the 980 nm ...
The European Concerted Research Action COST P14
... If the principle seems straightforward, the practical realisation needs a lot of care. In particular, the shape of the initial pulse envelop is of crucial importance. If the pulse is Gaussian, even if the effect do exist, for sure it will not be observable. A pulse with a very sharp edge (namely ver ...
... If the principle seems straightforward, the practical realisation needs a lot of care. In particular, the shape of the initial pulse envelop is of crucial importance. If the pulse is Gaussian, even if the effect do exist, for sure it will not be observable. A pulse with a very sharp edge (namely ver ...
PDF
... contains a Gaussian-shaped optical beam with a measured beam width about 1.6°. Note that the green circles in Fig. 3 as well as in the simulations in Fig. 1 correspond to a view field θ ≤ 24° , set by the numerical aperture of the objective. The good agreement between the experiment (Fig. 3) and the ...
... contains a Gaussian-shaped optical beam with a measured beam width about 1.6°. Note that the green circles in Fig. 3 as well as in the simulations in Fig. 1 correspond to a view field θ ≤ 24° , set by the numerical aperture of the objective. The good agreement between the experiment (Fig. 3) and the ...
pdf file
... (Spitfire, Spectra Physics) with 150 fs duration were used as the light source in the experiment. The wavelength and repetition rate of the output of the amplifier were 800 nm and 1 kHz, respectively. The amplified laser beam was first split into two limbs by a beam splitter. The main portion of the ...
... (Spitfire, Spectra Physics) with 150 fs duration were used as the light source in the experiment. The wavelength and repetition rate of the output of the amplifier were 800 nm and 1 kHz, respectively. The amplified laser beam was first split into two limbs by a beam splitter. The main portion of the ...
Nonlinear Beam Shaping with Plasmonic Metasurfaces
... importance with respect to the evolution of its parameters in time and space and to its interaction with other physical systems. In optics, the spatial evolution of the photon wave function can be described by the Helmholtz equation. In the low-light regime its solution gives the spatial photon prob ...
... importance with respect to the evolution of its parameters in time and space and to its interaction with other physical systems. In optics, the spatial evolution of the photon wave function can be described by the Helmholtz equation. In the low-light regime its solution gives the spatial photon prob ...
Laser III - Universiti Sains Malaysia
... The onset of lasing is characterised by the a specific injection current known as the Threshold Current Since the simple homojunction laser has high threshold current, it is considered not efficient. The onset of laser action at the threshold current density is indicated by an abrupt increase in rad ...
... The onset of lasing is characterised by the a specific injection current known as the Threshold Current Since the simple homojunction laser has high threshold current, it is considered not efficient. The onset of laser action at the threshold current density is indicated by an abrupt increase in rad ...
Coherence - Studentportalen
... We realize immediately that bending magnet radiation, having a broad wavelength spectrum is not a good candidate for filtering out coherent intensity. Undulator radiation, on the other hand, emits in a narrow bandwidth has a good potential (It is the brilliance that matters). This filtering is done ...
... We realize immediately that bending magnet radiation, having a broad wavelength spectrum is not a good candidate for filtering out coherent intensity. Undulator radiation, on the other hand, emits in a narrow bandwidth has a good potential (It is the brilliance that matters). This filtering is done ...
Gauthier Abstracts - Department of Electronics
... localized modes can still exist in such structures. These modes resemble those of a central potential that suggests that localization in photonic quasicrystals are actually “extended” modes of the rotational symmetry. A possible connection is suggested between these localized modes and short-range d ...
... localized modes can still exist in such structures. These modes resemble those of a central potential that suggests that localization in photonic quasicrystals are actually “extended” modes of the rotational symmetry. A possible connection is suggested between these localized modes and short-range d ...
Laser beam profiler
A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers — ultraviolet, visible, infrared, continuous wave, pulsed, high-power, low-power — there is an assortment of instrumentation for measuring laser beam profiles. No single laser beam profiler can handle every power level, pulse duration, repetition rate, wavelength, and beam size.