finesse.components.cavity.Cavity.g

property Cavity.g

The stability of the cavity, in both planes, given by the $g$-factor:

$$g = \frac{A + D + 2}{4},$$

where $A$ and $D$ are the relevant entries of the cavity round-trip ABCD matrix. The cavity is stable if the following condition is satisfied:

$$0 \leq g \leq 1.$$

Getter

Returns a numpy.ndarray of the cavity stability in the tangential and sagittal planes, respectively (read-only).