Figure 3

Figure 3: Schematic diagram of proof-masses-plus-optical-benches for a LISA spacecraft. The left-hand bench reads out the phase signals s 1 and t 1. The right-hand bench analogously reads out ' s1 and ' t1. The random displacements of the two proof masses and two optical benches are indicated (lower case di,d'i for the proof masses, upper case Di,D'i for the optical benches).