Analyses - Coherent Vector Wave Field

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Coherent Vector Wave Field

Page Contents

Description

Navigation

Controls

Application Notes

•Multithreaded operation

•Multiple wavelengths

•Vector field file

Related Topics

Description

Computes the coherent vector field for polarized rays, where Ex, Ey and Ez are complex quantities. This function allows analysis of complex field quantities such as energy, amplitude, signed amplitude, real part (x,y,z), imaginary part (x,y,z), phase and wavefront.

NOTE: Unpolarized rays are ignored in this calculation.

Navigation

This command can be accessed in the following ways:

•Menu > Analysis > Coherent Vector Wavefield

•Press the toolbar button:

Controls

Control	Inputs / Description	Defaults
Use This Analysis Surface
Use This Analysis Surface	Currently selected analysis surface	First surface in list
List of Available Analysis Surfaces
List of Available Analysis Surfaces	Lists the available analysis planes for use as the ray filter.	Valid analysis surfaces
Pre-Analysis Ray Operations
Delete old rays and recreate all active sources	If checked, existing rays are deleted, and new rays are created before the analysis proceeds.	Unchecked if rays exist. Checked if no rays exist.
Raytrace all active rays	If checked, any existing rays are raytraced before the analysis is performed.	Unchecked if rays exist. Checked if no rays exist.
Plot the rays as they are being raytraced	If checked the rays will be drawn to the 3D view when traced	Unchecked
Post-Analysis Operations
Create Analysis Results Node (ARN)	Adds an Analysis Results Node (ARN) to the Analysis Results folder on the object tree. The ARN being created stores the results of, and information about, the analysis being performed.	Unchecked
Name Prefix	The name of the ARN on the tree will be formed by combining this name prefix with an automatically generated numeric value, ensuring that the resulting ARN has a unique name string.	CoherentVectorField

OK	Perform analysis and close dialog box.
Cancel	Discard analysis and close dialog box.
Help	Displays this help article

Application Notes

Multi-threaded operation

The Coherent Vector Wave Field and its script equivalent are multi-threaded so that calculation times will decrease if you have a multi-processor PC. The number of processors used for the calculation is determined in the same manner as the raytrace multi-threading.

Multiple wavelengths

When a coherent field calculation encounters multiple wavelengths, the calculation will proceed using only the first wavelength which satisfies the ray filter criteria. A warning dialog will be displayed which provides the wavelength range and the value used in the calculation (to 7 significant digits). All other wavelengths are ignored.

Vector Field File

The header of the *.fgd output for a vector field contains the following lines:

A_AXIS_DIM = m

B_AXIS_DIM = n

BeginData

These lines indicate that m is the number of pixels in the X-direction and n is the number of pixels in the Y-direction. After the line BeginData there are n rows with 6*m columns per row. Each group of 6 columns corresponds to the values of X(Re), X(Im), Y(Re), Y(Im), Z(Re) and Z(Im).