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.

Modeling of Etalon with Planar or Curved Surfaces

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.

Free Webinar | Modeling and Design of Metagrating Structures

Free Webinar | Modeling and Design of Metagrating Structures