Resonator Mode Calculator

Analyze laser resonator stability, mode spacing, and beam waist for two-mirror cavities.

Cavity Parameters
Enter cavity length and mirror radii to see resonator analysis.
Abridged Optics — Resonator Mode Calculator v1.0Assumes paraxial, empty (or uniformly filled) two-mirror cavity. Beam waist is for the fundamental TEM\u2080\u2080 mode.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.