LaserField

MATLAB

Laser = LaserField(x,y,LaserType,TotalPower,lambda,...
                   FocusDistance,[p1,p2,...pN])

Description

Returns structure representing a laser field for use in wave-optics simulation. Structure contains complex grid for laser field consistent with input parameters.

Parameters

Parameters	Description
x [vector]	X centers (vertical axis) for laser field evaluation (m)
y [vector]	Y centers (horizontal axis) for laser field evaluation (m)
LaserType [string]	Identifier for type of laser to model. Supports 'UNIFORM', 'GAUSSIAN', 'LAGUERRE-GAUSS', and 'RECTANGULAR' (see comments below)
TotalPower [scalar]	Output power for the laser (W)
lambda [scalar]	Wavelength of the laser (m)
FocusDistance [scalar]	Radius of curvature for beam (m)
p1...pN [list]	Parameter values for laser model options
LaserType	'UNIFORM' 'GAUSSIAN' 'LAGUERRE-GAUSS' 'RECTANGULAR'
p1 [scalar]	Diameter of aperture (m). Sigma for irradiance of form $exp(-(r/sigma)^{2})$ (m) Sigma for irradiance of form $exp(-(r/sigma)^{2})$ (m) Outer side length in x axis (m)
p2 [scalar]	Diameter of central obscuration (m). Diameter of clipping aperture (m). Diameter of clipping aperture (m). Outer side length in y axis (m)
p3 [scalar]	Laguerre radial mode. (Optional) Obscuration side length in x axis (m)
p4 [scalar]	Laguerre angular mode. (Optional) Obscuration side length in y axis (m)

Return Values

Return Values	Description
Laser [struct]	Output laser structure
Laser.x [vector]	X locations of laser field grid points (m)
Laser.y [vector]	Y locations of laser field grid points (m)
Laser.g [matrix]	Complex grid of laser field values ($sqrt(W)/m$)
Laser.LaserType [string]	Identifier for laser field specification
Laser.TotalPower [scalar]	Total integrated power for field (W)
Laser.Wavelength [scalar]	The wavelength of laser (m)
Laser.FocusDistance [scalar]	Radius of curvature for beam (m)
Laser.Dimension [scalar]	Characteristic size of beam (m)
Laser.Params [cell array]	Model parameters input to function

References

L. C. Andrews and R. L. Phillips, Laser Beam Propagation through Random Media, 2nd ed. Bellingham, Wash.: SPIE Press, 2005.
L. C. Andrews, Special Functions of Mathematics for Engineers, 2nd ed. Oxford: Oxford University Press, 1998.

Group

Functions Supporting Scaling Law Analysis

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