Birefringent Filter Model
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Foundation ::
Laser Applications ::
Birefringent Filter Model
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Birefringent Filter Model
A standalone model of a birefringent filter
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Moderators:
Adopt This Application!
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SOURCE CODE AVAILABLE
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Birefringent filters are often used as line-narrowing components in solid
state lasers. The Birefringent Filter Model program generates a stand-alone
model of a birefringent filter for use in designing and analyzing a
birefringent filter. It was originally developed to aid in the design of
solid state lasers to be used on aircraft or spacecraft to perform remote
sensing of the atmosphere. The model is general enough to allow the user to
address problems such as temperature stability requirements, manufacturing
tolerances, and alignment tolerances.
The input parameters for the program are divided into 7 groups:
- general parameters which refer to all elements of the filter;
-
wavelength related parameters;
- filter, coating and orientation
parameters;
- input ray parameters;
- output device specifications;
-
component related parameters; and
- transmission profile parameters.
The
program can analyze a birefringent filter with up to 12 different
components, and can calculate the transmission and summary parameters for
multiple passes as well as a single pass through the filter. The Jones
matrix, which is calculated from the input parameters of Groups 1 through 4,
is used to calculate the transmission.
Output files containing the
calculated transmission or the calculated Jones' matrix as a function of
wavelength can be created. These output files can then be used as inputs for
user written programs. For example, to plot the transmission or to calculate
the eigentransmittances and the corresponding eigen-polarizations for the
Jones' matrix, write the appropriate data to a file.
Birefringent Filter Model carries the NASA case number LAR-13945. It was originally released as part of the NASA COSMIC collection.
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