Absolute Specular Reflectance Measurements at Fixed
... intended sample measurement but also has general reflectance characteristics similar to those of the sample. Measurements with the PELA 6000 VN Series accessories do not suffer from such difficulties in finding suitable calibrated reflectance standards, as none are required in this absolute measurem ...
... intended sample measurement but also has general reflectance characteristics similar to those of the sample. Measurements with the PELA 6000 VN Series accessories do not suffer from such difficulties in finding suitable calibrated reflectance standards, as none are required in this absolute measurem ...
Nonlinear Behavior and Damage of Dispersive Multilayer
... We have tested a series of DM in the set up depicted in Figure 1. Laser source 1, is the frequency doubled output of the Ti:Sph amplifier system yielding ∼ 40fs up-chirped pulses centered at 400nm. Exploitation of the programmable dispersive filter-DAZZLER (not pictured) -allows step-wise attenuatio ...
... We have tested a series of DM in the set up depicted in Figure 1. Laser source 1, is the frequency doubled output of the Ti:Sph amplifier system yielding ∼ 40fs up-chirped pulses centered at 400nm. Exploitation of the programmable dispersive filter-DAZZLER (not pictured) -allows step-wise attenuatio ...
High-peak-power pulse generation from a
... devices [14]. We attribute the power degradation and the slight pulse broadening for amplifier currents above 4 A to thermal effects, as previously commented. The rollover of the pulse power as a function of the amplifier current is more pronounced than in the cw regime [compare Fig. 4(b) with Fig. ...
... devices [14]. We attribute the power degradation and the slight pulse broadening for amplifier currents above 4 A to thermal effects, as previously commented. The rollover of the pulse power as a function of the amplifier current is more pronounced than in the cw regime [compare Fig. 4(b) with Fig. ...
Soliton pairs in a fiber laser: from anomalous to normal average
... 50-cm long open-air section containing wave plates and polarizing cubes. Due to nonlinear polarization evolution that takes place along with propagation in the fibers, the transmission through the polarizer P1 is intensity dependent, and an appropriate adjustment of the preceding wave plates trigger ...
... 50-cm long open-air section containing wave plates and polarizing cubes. Due to nonlinear polarization evolution that takes place along with propagation in the fibers, the transmission through the polarizer P1 is intensity dependent, and an appropriate adjustment of the preceding wave plates trigger ...
What limits the maximum output power of long-wavelength
... large number of material parameters which need to be adjusted before a reliable analysis and optimization of the device can be performed. This calibration process consists of several stages and it involves different measurements. Gain calculations are the most important part of any laser simulation. ...
... large number of material parameters which need to be adjusted before a reliable analysis and optimization of the device can be performed. This calibration process consists of several stages and it involves different measurements. Gain calculations are the most important part of any laser simulation. ...
Analytic design method for optimal imaging: coupling three ray sets
... point in the image space which can be achieved by using a Cartesian oval [3]. In order to focus light coming from an additional object point, one surface is no longer sufficient, two surfaces are needed. In general, an optical system consisting of N optical surfaces can couple N sets of rays for whi ...
... point in the image space which can be achieved by using a Cartesian oval [3]. In order to focus light coming from an additional object point, one surface is no longer sufficient, two surfaces are needed. In general, an optical system consisting of N optical surfaces can couple N sets of rays for whi ...
Optical field profile evaluation on silica high Optical field profile
... from FFP are appared the difference in vicinity of boundary of core and clad of silicon waveguide (x = ±1.0µm). The optical field of NFP, resulting from the conversion of FFP correspond closely with the optical field of NFP simulated using FEM. The difference arises due to the approximation used in ...
... from FFP are appared the difference in vicinity of boundary of core and clad of silicon waveguide (x = ±1.0µm). The optical field of NFP, resulting from the conversion of FFP correspond closely with the optical field of NFP simulated using FEM. The difference arises due to the approximation used in ...
preprint version PDF - Emory Physics Department
... and well-suited for studying samples which move or change. The output of the CCD video camera is usually attached to a frame grabber card in a computer, so that data is saved digitally, although a conventional VCR (video cassette recorder) can also be used. There are several types of optical microsc ...
... and well-suited for studying samples which move or change. The output of the CCD video camera is usually attached to a frame grabber card in a computer, so that data is saved digitally, although a conventional VCR (video cassette recorder) can also be used. There are several types of optical microsc ...
Laser Locking with Doppler-free Saturated Absorption Spectroscopy
... The lower part gives the relative position of the hyperfine lines in MHz [4]. With these multi-level atoms, additional variables such as optical pumping and crossover resonances must be considered. Crossover resonances are additional absorption dips that are seen due to the overlapping of Doppler-br ...
... The lower part gives the relative position of the hyperfine lines in MHz [4]. With these multi-level atoms, additional variables such as optical pumping and crossover resonances must be considered. Crossover resonances are additional absorption dips that are seen due to the overlapping of Doppler-br ...
ASO Cleaning System
... commonly see in stores as "Rubbing Alcohol." However, most on-the-shelf varieties is about 70% or less pure....the remaining 30% is impurities which WILL result in streaking and deposits on your glass. USE ONLY 91% OR HIGHER proof isopropyl....this is found on the same shelf typically, in very large ...
... commonly see in stores as "Rubbing Alcohol." However, most on-the-shelf varieties is about 70% or less pure....the remaining 30% is impurities which WILL result in streaking and deposits on your glass. USE ONLY 91% OR HIGHER proof isopropyl....this is found on the same shelf typically, in very large ...
First-principles study of electronic, optical and thermoelectric
... 10 × 10 × 10 mesh is calculated up to 35 k-points in the irreducible wedge of the BZ. For calculating the optical properties, however, a denser sampling of the BZ is required and a mesh of 120 k-points has been used for these calculations. 3. Results and Discussion 3.1. Structural properties To star ...
... 10 × 10 × 10 mesh is calculated up to 35 k-points in the irreducible wedge of the BZ. For calculating the optical properties, however, a denser sampling of the BZ is required and a mesh of 120 k-points has been used for these calculations. 3. Results and Discussion 3.1. Structural properties To star ...
Optics - MIT Fab Lab
... happen because the plane-wave approximation is no longer justified when dimensions become comparable to the wavelength. It’s then necessary to return the wave equation. Consider a point source emitting a spherical wave eikr /r. If the wave is run backwards so that it travels towards the source, radi ...
... happen because the plane-wave approximation is no longer justified when dimensions become comparable to the wavelength. It’s then necessary to return the wave equation. Consider a point source emitting a spherical wave eikr /r. If the wave is run backwards so that it travels towards the source, radi ...
Get PDF - OSA Publishing
... with hyperbolic dispersion (εx’ >0, εz’ <0), as a specific example to illustrate the new imaging paradigm. Such a hyperbolic metalens can be designed to focus an incident p-polarized plane wave from the air side to the focus Fm at the focal length fm in the metamaterial by given εx’ and εz’. The det ...
... with hyperbolic dispersion (εx’ >0, εz’ <0), as a specific example to illustrate the new imaging paradigm. Such a hyperbolic metalens can be designed to focus an incident p-polarized plane wave from the air side to the focus Fm at the focal length fm in the metamaterial by given εx’ and εz’. The det ...
Intensity-dependent change in polarization state of light in normal
... B R(1 − R)3 I03 sin2 2θ will leak through it. 0 (n̄ + 1) This intensity is maximum for 2θ = π/2, i.e., for polarization index tan(π/8) of incident plane polarized light. The ratio of this intensity to reflected intensity from nonlinear medium is proportional to the square of the intensity-dependent ...
... B R(1 − R)3 I03 sin2 2θ will leak through it. 0 (n̄ + 1) This intensity is maximum for 2θ = π/2, i.e., for polarization index tan(π/8) of incident plane polarized light. The ratio of this intensity to reflected intensity from nonlinear medium is proportional to the square of the intensity-dependent ...
Question bank Physics Part1 (Updated 9-July-12)
... 29. If the diameter of the central zone of a zone plate is 2.5 mm & a point source of light of wavelength 7.5x10-5 cm is placed 5 meters away from the zone plate, find the position of the primary & secondary images? 30.Find the radius of the first three transparent zones of a zone plate whose focal ...
... 29. If the diameter of the central zone of a zone plate is 2.5 mm & a point source of light of wavelength 7.5x10-5 cm is placed 5 meters away from the zone plate, find the position of the primary & secondary images? 30.Find the radius of the first three transparent zones of a zone plate whose focal ...
Single-frequency continuous-wave optical parametric oscillator
... and 2%), respectively. The signal is emitted as only a tiny leakage through the four highly reflecting resonator mirrors, and nearly all of the generated signal power (which can be inferred from the emitted idler power) is dissipated in the nonlinear crystal. It should therefore be possible to obtai ...
... and 2%), respectively. The signal is emitted as only a tiny leakage through the four highly reflecting resonator mirrors, and nearly all of the generated signal power (which can be inferred from the emitted idler power) is dissipated in the nonlinear crystal. It should therefore be possible to obtai ...
A simple method for Bragg diffraction in volume holographic gratings Heifetz,
... A rigorous analysis of volume holographic gratings involves the coupled-wave theory,17–20 which is derived from Maxwell’s equations. Instructors often do not discuss volume holography in undergraduate optics courses because of the difficulty of communicating coupled-wave theory. In this paper, we sh ...
... A rigorous analysis of volume holographic gratings involves the coupled-wave theory,17–20 which is derived from Maxwell’s equations. Instructors often do not discuss volume holography in undergraduate optics courses because of the difficulty of communicating coupled-wave theory. In this paper, we sh ...
Resolution-and throughput-enhanced spectroscopy using high
... able to enter the spectrometer- therefore resulting in a decrease in light throughput of the resulting spectrum. The depletion of light can be detrimental to application where transient phenomena are the subject f study or systems that are photon-starved -where the amount of light available to the ...
... able to enter the spectrometer- therefore resulting in a decrease in light throughput of the resulting spectrum. The depletion of light can be detrimental to application where transient phenomena are the subject f study or systems that are photon-starved -where the amount of light available to the ...
Intuitive explanation of the phase anomaly of focused light beams
... The intuitive explanation of the phase anomaly is illus trated by the focused Gaussian beam shown in Fig. 3. The two wave fronts AB and BE are symmetrically located with respect to the beam waist at z = 0. According to geometrical optics the optical path length between wave front AB and wave front ...
... The intuitive explanation of the phase anomaly is illus trated by the focused Gaussian beam shown in Fig. 3. The two wave fronts AB and BE are symmetrically located with respect to the beam waist at z = 0. According to geometrical optics the optical path length between wave front AB and wave front ...
Laser - nptel
... Laser beams are characterized by the following special properties : Coherence: Laser beam is highly coherent, i.e, different parts of the beam maintain a phase relationship bfor a long time. this results in interference effect. When a laser beam reflects off a surface, the reflected light can be see ...
... Laser beams are characterized by the following special properties : Coherence: Laser beam is highly coherent, i.e, different parts of the beam maintain a phase relationship bfor a long time. this results in interference effect. When a laser beam reflects off a surface, the reflected light can be see ...
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.