Gaussian beam

(redirected from Beam waist)

Gaussian beam

[′gau̇s·ē·ən ′bēm]
(electromagnetism)
A beam of electromagnetic radiation whose wave front is approximately spherical at any point along the beam and whose transverse field intensity over any wave front is a Gaussian function of the distance from the axis of the beam.
References in periodicals archive ?
However, broadening of the light sheet at distances far from the beam waist and sample-induced scattering degrades diSPIM contrast and optical sectioning.
The beam divergence of the lasers is ~ 4 mrad x 1 mrad, with a beam waist of 12 mm diameter at the window.
0] is the beam waist width of the fundamental Gaussian mode, and [L.
a first lens system for writing a holographic pixel of said hologram on to a photosensitive medium, said first lens system being arranged downstream of said spatial light modulator and being arranged to focus said object beam to a minimum beam waist at a Fourier plane defined by said first lens system; and
Andrews, "Effective beam parameters and the turbulent beam waist for initially convergent Gaussian beams," Appl.
the product of beam radius at the beam waist with the far-field beam divergence angle
Examining the overlap above and below the focus, they noted the beam waist became larger with signals coming back from numerous positions.
The excellent beam parameter (half beam waist x half divergence) of less than 200 mmmrad both in fast and slow axis, makes fiber-coupling possible.
The excellent beam parameter (half beam waist x half divergence) of less than 200 mm-mrad both in fast and slow axis, makes fiber-coupling possible.
Ellipsoidal mirrors or biconvex lenses focus an input beam waist |w.
1, an incident Gaussian beam propagates in free space and from the negative z' to the positive z' axis of the Cartesian coordinate system O'x'y'z', with the middle of its beam waist located at origin O'.