Materials - Model Material

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Model Material

Page Contents

Description

Navigation

Controls

Application Notes

•Applying by drag and drop

•Summary and detailed reports

•Script commands

•Script examples

Related Topics

Description

The Model Material type calculates the non-linear refractive index as defined by the refractive index and the Abbe V-number at the helium ‘d’ line (0.587562 mm) using a modified Sellmeier formula. This material type is an alternative to the Sampled Material for creating a glass model that is not available from any of the default catalogs. The modified Sellmeier formula used for the model material is the following:

Navigation

This feature can be accessed in the following ways:

•Open a materials dialog and select "Model Material" as the type

Controls

Control	Inputs / Description	Defaults
Name	Enter a material name.	Material n
Description	Enter a brief description of the material.	Blank
Type	Select "Model Material" from the pull down menu	Sampled Material
Model Material Parameters
N_d	Enter the refractive index at the ‘d’ wavelength.	1.5
V_d	Enter the Abbe number at the ‘d’ wavelength. When V_d = 0, there is no dispersion in the material.	64

OK	Accept settings and close the dialog
Cancel	Cancel settings and close the dialog
Help	Help

Application Notes

Applying by drag and drop

A material can be applied to a surface via drag and drop onto that surface.

Summary and detailed reports

A report of all materials currently contained in the Materials folder can be printed to the output window by right mouse clicking on the materials folder and selecting either "Summary Report" for a brief summary or "Detailed Report" for a complete listing of all the materials defined in the FRED document.

The summary report option prints the name and description of all defined materials.

The detailed report option prints all information relevant to the material including any coefficient specifications, real and imaginary refractive indices and absorption specifications. The wavelengths at which each material is evaluated is generated by searching through all the existing sources for unique wavelengths regardless of whether the source is designated Traceable or Not Traceable.

Script Commands

Functions and Subroutines

Associated Data Type

Script Examples

The following example adds a Model Material to the FRED file associated with this script.

Dim m As T_MODELMATERIAL
m.Name = "Model Material Example"
m.Description = "Sample from FRED documentation"
m.Nd = 1.6
m.Vd = 55
AddModelMaterial m

The following example sets the name of the fourth material in the material array to “Model Example 2”, as long as that material is a Model material. It fails if it is any other material type.

Dim m As T_MODELMATERIAL
m.Name = "Model Example 2"
SetModelMaterial4, m

The following example gets the fourth material in the material array and prints its name, as long as that material is a Model material. It fails if it is any other material type.

Dim m As T_MODELMATERIAL
GetModelMaterial 4, m
Print m.Name