function as a simple beam expander for collimated light. The main advantage of the Galilean design is that it never focuses a collimated beam to a point, so...

linewidth dye laser, introduced by Hänsch, used a Galilean telescope as beam expander to illuminate the diffraction grating. Next were the grazing-incidence...

In optics, a Gaussian beam is an idealized beam of electromagnetic radiation whose amplitude envelope in the transverse plane is given by a Gaussian function;...

Desktop manufacturing Digital fabricator Direct digital manufacturing Electron-beam melting Fab lab Fused filament fabrication Instant manufacturing, also known...

Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated...

case of multiple-prism beam expanders this factor can be as high as 100–200. When the dispersion of the multiple-prism expander is not equal to zero, then...

optical communication, laser cutting, and lithography. It also allows a laser beam to stay narrow over great distances (collimation), used in laser pointers...

prism as a beam expander, and also the use of multiple-prism arrays. Some 278 years after Newton's discussion, multiple-prism beam expanders became central...

following components: a laser (usually Nd:YAG), a beam expander, some optics used to steer the beam location in the sample plane, a microscope objective...

physicist William R. Bennett, Jr., in 1960. It produced a coherent light beam in the infrared region of the spectrum at 1.15 micrometres. Gas lasers using...

optics and CNC (computer numerical control) are used to direct the laser beam to the material. A commercial laser for cutting materials uses a motion control...

{\displaystyle ~P~} as it passes through the medium. The factor by which an input beam is amplified by a medium is called the gain and is represented by G. G =...

is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high...

shape, via the introduction of a convex lens prior to the prismatic expander, of a beam extremely elongated in the propagation plane and extremely thin in...

process with CO2 laser beams. One consideration crucial to the success of a heat treatment operation is control of the laser beam irradiance on the part...

setup consists of a tunable diode laser light source, transmitting (i.e. beam shaping) optics, optically accessible absorbing medium, receiving optics...

a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and...

complementary information. Typically, a sample is illuminated with a laser beam. Electromagnetic radiation from the illuminated spot is collected with a...

physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to strike a target of the material that...

Institute in Moscow, using liquid xenon dimer (Xe2) excited by an electron beam. Spurred by this report, H.A. Koehler et al. presented a better substantiation...

high power levels (terawatts) and high energies (megajoules), for multiple-beam inertial confinement fusion. The first material used for lasers was synthetic...

\over \partial \lambda }\right)^{-1}} where M is the beam magnification provided by the beam expander that multiplies the angular dispersion provided by...

geometry (resonator type) must be chosen so that the beam remains stable, i.e. the size of the beam does not continually grow with multiple reflections...

world's first expander bleed cycle engine to be put into operational service. The Mitsubishi LE-9 is the world's first first stage expander bleed cycle...

of the laser beam, directly affects the depth of penetration of the light energy due to scattering effects in the dermal layer. Larger beam diameters or...

known as the beam propagation ratio or beam quality factor is a measure of laser beam quality. It represents the degree of variation of a beam from an ideal...

photothermolysis). The laser beam penetrates the skin until it encounters chromophore which absorbs the laser beam. After absorption of the laser beam, heat is generated...

infrared laser, optical beamsplitters, beam steering mirrors, delay stages, a terahertz generator, terahertz beam focusing and collimating optics like parabolic...

single laser beam as long as that beam has a component along all three motional degrees of freedom. This is in contrast to the six beams required to trap...

transmitted direction the beam is split and then combined and focused into the output collimator. In the isolated direction the beam is split, and then diverged...