title: Narrow optical interference fringes for certain setup conditions in multipass absorption cells of the Herriott type.
abstract: 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.
authors.forename: J B
authors.initials: JB
authors.lastname: McManus
authors.forename: P L
authors.initials: PL
authors.lastname: Kebabian