Modeling of Etalon with Planar or Curved Surfaces

Abstract


The basic setup of an optical etalon is a transparent plate with parallel surfaces. Such a structure forms a resonator, where transmittance and reflectance vary with the thickness of the etalon. Beside this simple configuration, more complex etalons, with e.g. non-parallel surfaces and curved surfaces, are designed and used for different applications. With the non-sequential field tracing technique of VirtualLab Fusion, several configurations of etalons are analyzed, and the differences in the output interference fringes are investigated including polarization effects.

VirtualLab Fusion Configuration

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Fabry-Pérot etalons for laser resonators and spectroscopy can be simulated in the optical design software

Use Case

Investigation of Sodium D Lines with a Fabry-Pérot Etalon

An optical metrology system with a silica spaced etalon is set up to measure the sodium D lines in the optical design software VirtualLab Fusion.

Tutorial

Channel Settings for Non-Sequential Tracing

With the flexible channel configuration in VirtualLab Fusion, one can easily control the response of any surface and/or region, to realize the desired model