Non-Sequential Modeling Etalons and Fabry-Pérot Resonators
Optical etalons are utilized in various applications, for example in the field of spectroscopy and laser resonators. The basic configuration of an etalon just comprises a plan-parallel transparent plate and can form a well-known Fabry-Pérot resonator, which is usually used for spectral and/or angular selection.
VirtualLab Fusion’s non-sequential field tracing technique enables the accurate modeling of very different types of etalons, with either planar or curved surfaces in combination with high-reflective coatings. Further, the physical-optics modelling approach automatically includes vectorial effects and hence allows for the investigation of polarization effects on the interference pattern.
As a typical application, we demonstrate the optical setup for the examination of sodium D lines with an etalon as the key component.
Investigation of Sodium D Lines with Etalon
An optical metrology system with a silica spaced etalon is set up to measure the sodium D lines in VirtualLab Fusion. Further, the influence of the reflectance of real coatings is investigated.
Optical etalons with both planar and curved surfaces are investigated. With the non-sequential field tracing technique, the regarding interference patterns are modeled including vectorial effects.
