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Foundation ::
Laser Applications ::
Etalon Model
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Etalon Model
Calculates several etalon performance parameters
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SOURCE CODE AVAILABLE
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Fabry-Perot etalons are wavelength selecting optical devices with
widespread applications in lasers, radiometers, and other electro-optical
devices. The Etalon Model program generates a stand-alone model of an
etalon. It is designed to perform calculations over many wavelengths.
The
model may be used to determine the sensitivity of the filter to temperature
changes, thickness tolerances, or alignment angles of an etalon design. A
pre and post-processor are included to facilitate case studies.
The Etalon Model program calculates several etalon performance parameters
using closed form equations. It calculates the transmission as a
function of wavelength, and uses the transmission data to determine additional
etalon performance parameters.
The calculations are done for two
etalons: The first etalon which is the collimated, untilted etalon, is
placed in a collimated optical beam with the beam at normal incidence; the
second etalon which is the uncollimated, tilted etalon is placed in a converging
beam at non-normal incidence.
The program is intended to be used
for comparison of measurements of an etalon in a collimated beam with the
performance of the etalon in an alternative system. The program will calculate
the parameters for multiple passes through the etalon.
ETALON carries the NASA case number LAR-14055. It was originally released as part of the NASA COSMIC collection.
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