Mischa Salle – Finesse, Pykat

Shift and phase change from tilted beamsplitters – part 2: finesse examples

2021-02-25 at 15:54 (last edited 2021-05-27 at 18:59)

Introduction This is the second post discussing the shift and phase dependence of a beam going through a z-shaped telescope setup when both beamsplitters are tilted over a small angle β. The first post (part 1: theory) derived both the shift in the position of the beam and the change in phase at the detector […]

Shift and phase change from tilted beamsplitters – part 1: theory

325 Mischa Salle

2021-02-25 at 15:49 (last edited 2021-03-04 at 11:38)

Introduction Given a z-shaped telescope setup with two beamsplitters such as depicted in Fig. 1, we calculate the effects on the outgoing beam when applying a small additional tilt β to the angle of incidence α of both beamsplitters. Such a small extra tilt is applied in Finesse 2 via the xbeta parameter of a […]