De. Mcclelland et al., TOLERANCE OF DUAL, RECYCLING LASER INTERFEROMETRIC GRAVITATIONAL-WAVEDETECTORS TO MIRROR TILT AND CURVATURE ERRORS, Physical review. D. Particles and fields, 48(12), 1993, pp. 5475-5484
Various configurations of dual recycling laser interferometers are tes
ted, numerically, for their tolerance to wave-front distortions induce
d by mirror tilts and curvature mismatch. We verify that, in the prese
nce of such geometric imperfections, dual recycling designs experience
significantly less power loss than straight power recycling devices.
Importantly, we show that the power loss reduction from the detection
port is accompanied by maintenance of circulating-power in the instrum
ent and hence maintenance of signal response. We confirm predictions t
hat when a cavity is placed at the output port of the interferometer,
tolerance to geometric imperfections is further improved by typically
an order of magnitude.