Real-time phase-front detector for heterodyne interferometers.
We present a real-time differential phase-front detector sensitive to better than 3 mrad rms, which corresponds to a precision of approximately 500 pm. This detector performs a spatially resolving measurement of the phase front of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the Laser Interferometer Space Antenna Technology Package interferometer and will assist in the manufacture of its flight model. Because of the advantages this instrument offers, it also has general applications in optical metrology.
Cervantes
Felipe Guzmán
FG
Max-Planck-Institut für Gravitationsphysik, Albert-Einstein-Institut Hannover, Germany. felipe.guzman@aei.mpg.de
Heinzel
Gerhard
G
Marín
Antonio F García
AF
Wand
Vinzenz
V
Steier
Frank
F
Jennrich
Oliver
O
Danzmann
Karsten
K