title: Optical path length and trajectory stability in rotationally asymmetric multipass cells.
abstract: We describe the behavior of optical trajectories in multipass rotationally asymmetric cavities (RACs) using a phase-space motivated approach. Emphasis is placed on generating long optical paths. A trajectory with an optical path length of 18 m is generated within a 68 cm3volume. This path length to volume ratio (26.6 cm-2) is large compared to current state of the art multipass cells such as the cylindrical multipass cell (6.6 cm-2) and astigmatic Herriott cell (9 cm-2). Additionally, the effect of small changes to the input conditions on the path length is studied and compared to the astigmatic Herriott cell. This work simplifies the process of designing RACs with long optical path lengths and could lead to broader implementation of these multipass cells.
authors.forename: Galen H
authors.initials: GH
authors.lastname: Harden
authors.forename: Luis E
authors.initials: LE
authors.lastname: Cortes-Herrera
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Hoffman