Propagation of a Gaussian beam in an absorbing waveguide is analyzed for cubic–quintic and saturable media taking into account both linear and nonlinear absorption. A "collective variable approach" technique, based on trial functions, is used to solve the general nonlinear Schrodinger equation. In ...
For an incident gaussian beam with arbitrary width, geometrical optics approximation has been used and an exact analytical expression for the average value of the beamwidth has been derived for a particular random process, namely, the dichotomic Markov process. The fluctuations in the beamwidth have ...
The full width at half maximum (FWHM) of the intensity profile is ≈1.18 times the Gaussian beam radius w(z). Note that the factor 1 / 2 in the denominator in the equation is unfortunately often forgotten, so that the on-axis intensity of the beam is underestimated by a factor of 2....
The non-paraxial propagation of Gaussian beam rays in multimode graded-index waveguide with polynomial refractive index profile is analytically investigated using the algebraic perturbation theory and the coherent states formalism. Explicit expressions are derived for the beam ray trajectories and widths. ...
Beam Waist Diameter mm Full Angle Beam Divergence mRad Single Mode Wavelength 9.817 µm Enable Object Placement Lens Element Lens Focal Length (mm) Lens Separation (mm) Add new Gaussian Beam Propagation 050100150200250300350400450500550Distance From Input Beam Definition (mm)-20-15-10-505...
Classical analog of electromagnetically induced transparency:电磁诱导透明的经典类比 螺旋因斯高斯光束在湍流介质中的传输特性 拉盖尔-高斯涡旋光束的传输特性研究 【doc】拉盖尔-高斯光束的传输特性 一种高斯-谢尔模型涡旋光束的光纤耦合装置及方法 gaussian beam coupling on a mems mirror array微机电反射镜阵列的高斯光...
We present a new beam propagation method, which circumvents these difficulties. The idea is to decompose the beam as a product of a Gaussian Beam TEM00 and an unknown distortion function Ξ. This leads to an interesting partial differential equation for Ξ, which contains a beam spreading ...
给出了BesseI-gaussian光束通过失调一阶透镜光学系统的 传输特性。 关键词:BesseI-gaussian光束;失调光学系统;增广矩阵 中图分类号:TH703文献标识码:A PropagationofHigh-orderBessel-aussianBeamthroughaMisaligned First-orderOpticalSystem ZHAOChen -Iian ,LUXuan-hui (nstituteofoptics,Zhejian University,Han zhou...
The propagation of incoherent orthogonal polarized Hermite-Gaussian (HG) beam pairs in nonlocal planar waveguide was investigated. The evolution equations of parameters and the conditions of forming vector solitons were obtained by variational method. Then the analytical results was confirmed by split-...
An analytical formula for the average intensity of cosh-Gaussian (ChG) beams diffracted by an aperture in turbulent atmosphere is derived and some limiting cases are discussed. By using the average intensity formula, some numerical simulation comparisons are made and some special cases are studied, ...