cavcalc.functions.symmetric.modesep_of_gsingle

cavcalc.functions.symmetric.modesep_of_gsingle(L, gsingle)

Mode separation frequency for a symmetric cavity of length \(L\), with mirror g-factors of \(g_s\).

In the equation below, \(\nu(L)\) is the FSR of the cavity, and \(\psi(g_s)\) is the round-trip gouy phase.

\[\begin{split}\delta f(L, g_s) = \begin{cases} \frac{\psi(g_s)}{2\pi}\,\nu(L) \quad \text{if }\, \psi < \pi,\\ \nu(L)\left(1 - \frac{\psi(g_s)}{2\pi}\right) \quad \text{otherwise} \end{cases}\end{split}\]