Fabrication of elliptically figured mirror for focusing hard x rays to
... RADSI in the case of measuring the designed profile, the two surface profiles were measured, placing the mirror having the same curvature as the designed one normally and upside down. The peak-to-valley distance of the differential profiles between the two identically measured profiles is confirmed ...
... RADSI in the case of measuring the designed profile, the two surface profiles were measured, placing the mirror having the same curvature as the designed one normally and upside down. The peak-to-valley distance of the differential profiles between the two identically measured profiles is confirmed ...
Simplified description of optical forces acting on a nanoparticle in
... from electrostatic interaction of a particle (dielectric) with an inhomogeneous electric field, and the scattering force results from the scattering of the incident beam by the object.21,23 For particles larger than /20, a more complex concept involving the Maxwell stress tensor of the electromagne ...
... from electrostatic interaction of a particle (dielectric) with an inhomogeneous electric field, and the scattering force results from the scattering of the incident beam by the object.21,23 For particles larger than /20, a more complex concept involving the Maxwell stress tensor of the electromagne ...
Interferometer design for writing Bragg gratings in optical fibers
... one possible means of sweeping a UV beam to determine the vertical position of the fiber core. A parallel plate is tilted by various amounts, causing a displacement of the illumination beam. Maximum fluorescence is observed when the beam is centered on the core of the fiber. The fluorescence measure ...
... one possible means of sweeping a UV beam to determine the vertical position of the fiber core. A parallel plate is tilted by various amounts, causing a displacement of the illumination beam. Maximum fluorescence is observed when the beam is centered on the core of the fiber. The fluorescence measure ...
Relativistic Corrections in Displacement Measuring Interferometry
... displacement error according to Eq. (4.11) is -2.0 nm at the far side of the wafer when moving away from the detector and +2.0 nm on the way back (M = 2). The maximum ”stitching error” between two neighboring exposure paths is therefore 4.0 nm, more than twice our design goal and an order of magnit ...
... displacement error according to Eq. (4.11) is -2.0 nm at the far side of the wafer when moving away from the detector and +2.0 nm on the way back (M = 2). The maximum ”stitching error” between two neighboring exposure paths is therefore 4.0 nm, more than twice our design goal and an order of magnit ...
Design for a Compact Tunable Ti:Sapphire Laser.
... 800 nm without étalons the laser threshold decreases by only less than 10%. At 980 nm the small-signal gain of the crystal apparently depends on temperature; after several minutes of operation the heat produced inside the crystal degrades the laser performance. A modified crystal mount with a integ ...
... 800 nm without étalons the laser threshold decreases by only less than 10%. At 980 nm the small-signal gain of the crystal apparently depends on temperature; after several minutes of operation the heat produced inside the crystal degrades the laser performance. A modified crystal mount with a integ ...
Volume Holographic Recording and Readout for 90
... Cross-beam or edge-lit holograms are of considerable current interest due to their potential compactness and inherent optical isolation between the readout beam and the diffracted order resulting from large Bragg angles.1 Edge-lit holograms have been recorded in photorefractive materials, including ...
... Cross-beam or edge-lit holograms are of considerable current interest due to their potential compactness and inherent optical isolation between the readout beam and the diffracted order resulting from large Bragg angles.1 Edge-lit holograms have been recorded in photorefractive materials, including ...
High-efficiency light coupling in a submicrometric
... the optimum resonant coupling efficiency, for a given coupler characterized by the decoupling length LC, as the beam parameters and position are varied. It is found that the optimum coupling of ⬃80% is obtained for a beam waist w0 ⫽ 1.37 LC cos ⌰r and when the distance d between the beam center and ...
... the optimum resonant coupling efficiency, for a given coupler characterized by the decoupling length LC, as the beam parameters and position are varied. It is found that the optimum coupling of ⬃80% is obtained for a beam waist w0 ⫽ 1.37 LC cos ⌰r and when the distance d between the beam center and ...
Chapter 11 Laser
... stimulated emission of excited atoms. If a condition can be created in which nE is substantially increased compared to the normal equilibrium value, known as population inversion, the rate of energy radiation by stimulated emission may exceed the rate of absorption. The system then acts as a source ...
... stimulated emission of excited atoms. If a condition can be created in which nE is substantially increased compared to the normal equilibrium value, known as population inversion, the rate of energy radiation by stimulated emission may exceed the rate of absorption. The system then acts as a source ...
A Guide to Acousto
... the power output is 10% and 90% of the maximum. This equation can be used to calculate the 1/e2 radius for any position along the beam path, provided that the X10−90 distance for that position is known. Further details on knife-edge measurements can be found in [4]. 4. Turn on the AOM and position i ...
... the power output is 10% and 90% of the maximum. This equation can be used to calculate the 1/e2 radius for any position along the beam path, provided that the X10−90 distance for that position is known. Further details on knife-edge measurements can be found in [4]. 4. Turn on the AOM and position i ...
Optical generation and detection of elastic waves in solids
... 2- 1 Thermoelastic regime. When a low power laser pulse strikes onto a solid surface, one part of the incident energy is reflected, the other part is absorbed and heat converted. The fast temperature rise, localized near the surface produces a thermal expansion which in turn creates a transient elas ...
... 2- 1 Thermoelastic regime. When a low power laser pulse strikes onto a solid surface, one part of the incident energy is reflected, the other part is absorbed and heat converted. The fast temperature rise, localized near the surface produces a thermal expansion which in turn creates a transient elas ...
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.