Narrow optical interference fringes for certain setup conditions in multipass absorption cells of the Herriott type.
We can select narrow FSR fringes in a multipass cell of the type described by Herriott et al. by setting the mirror spacing to give a particular type of beam path: M = odd integer, N = 4M +/- 4.
McManus
J B
JB
Kebabian
P L
PL