Results 251 to 260 of about 68,410 (312)

Influence of laser beam intensity profile on deep bone ablation in laser osteotomy. [PDF]

open access: yesSci Rep
Liu M   +8 more
europepmc   +1 more source

Alignment of Gaussian beams

Applied Optics, 1984
The design of a coupling between a semiconductor laser and a single-mode fiber, or between any two optical or acoustical elements that support Gaussian modes, is presented as a trade-off among coupling efficiency T(a), offset misalignment tolerance d(e), and angular misalignment tolerance theta(e).
W B, Joyce, B C, DeLoach
openaire   +2 more sources

Ince–Gaussian beams

Optics Letters, 2004
We demonstrate the existence of the Ince-Gaussian beams that constitute the third complete family of exact and orthogonal solutions of the paraxial wave equation. Their transverse structure is described by the Ince polynomials and has an inherent elliptical symmetry.
Miguel A, Bandres   +1 more
openaire   +2 more sources

Decentered Gaussian beams

Applied Optics, 1995
A generalization of the Gaussian beam is obtained by introducing a complex-valued shift in the transverse dimension. The resulting beam has a Gaussian intensity distribution with width varying as an ordinary Gaussian beam, but whose peak traces an inclined linear trajectory. The wave fronts are displaced laterally in a sheared fashion. This generalized
A A, Al-Rashed, B E, Saleh
openaire   +2 more sources

Improved Gaussian beam-scattering algorithm

open access: yesApplied Optics, 1995
The localized model of the beam-shape coefficients for Gaussian beam-scattering theory by a spherical particle provides a great simplification in the numerical implementation of the theory.
James A Lock
exaly   +3 more sources

Beam profile flattener for Gaussian beams

Optics Letters, 1993
We describe a novel technique to make a Gaussian laser beam profile spatially flat. We exploit the angular dependence of the transmission of an étalon to tailor the spatial profile to the desired form. A simple analysis shows why our method works so well and how an étalon could be tuned to give the optimum results at all wavelengths. This technique has
C, Xie, R, Gupta, H, Metcalf
openaire   +2 more sources

Mountain Waves and Gaussian Beams

Multiscale Modeling & Simulation, 2007
This paper is concerned with Gaussian beams, defined as approximate solutions to hyperbolic partial differential equations that are concentrated on a curve in space-time. The authors explore in this paper a method to compute the (in time) stationary wave field that results from steady air flow over the topography as a superposition of Gaussian beams ...
Nicolay M. Tanushev   +2 more
openaire   +1 more source

Gaussian Beams in Turbulent Media

Applied Optics, 1970
The propagation of a gaussian beam in a turbulent medium is investigated by the geometrical optics method. The correlation function as well as the structure function of the phase fluctuations at two points of an imperturbed wavefront are derived in a closed form in the two limiting cases when the points belong to two almost parallel rays or to two ...
A. Consortini, L. Ronchi
openaire   +3 more sources

Symmetric Pearcey Gaussian beams

Optics Letters, 2021
In this Letter, a new, to the best of our knowledge, type of autofocusing and symmetric beam arisen from two quartic spectral phases is introduced in theory and experiment. The symmetric Pearcey Gaussian beam (SPGB), formed with a Gaussian term and two multiplying Pearcey integrals, processes a focusing intensity approximately 1.32 times stronger than ...
You Wu   +13 more
openaire   +2 more sources

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