Frequency domain interferometer simulation software

Frequency-Domain Optical Simulations
Calculate light field amplitudes and detector outputs in a quasi-static, user-specified interferometer configuration.

Spatial Effects
Model light fields as Gaussian beams, including paraxial spatial deformations such as misalignment and surface roughness, perturbatively using higher order modes.

Control Systems
Simulate open- and closed-loop feedback systems including optical, mechanical and electrical elements.

General users should refer to documentation for the latest stable release. Developers may prefer to view that of the develop version.

Share your examples and questions in our Logbooks, and chat with Finesse developers and other users by joining our chat channel on Matrix.

Try Finesse Online
You can try Finesse in a pre-installed environment using our Jupyter notebooks before you install it on your own computer (note that you cannot save your work).

About Finesse
Explore our introduction to Finesse, learn the history of the software, or read about its impact and how you can cite Finesse in your own work.

Open Source
Finesse is an open source project distributed under a GPL 3.0 license. The code is developed by a small community and maintained publicly on GitLab.