Technical limitations to homodyne detection at audio frequencies

Applied Optics

Volumn 46, Issue 17, 2007, Pages 3389-3395

  McKenzie, Kirk ^a   Gray, Malcolm B ^a   Lam, Ping Koy ^a   McClelland, David E ^a  

^a AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

AUDIO SYSTEMS; GRAVITY WAVES; INTERFEROMETRY; NATURAL FREQUENCIES; OSCILLATORS (ELECTRONIC); READOUT SYSTEMS;

BEAM JITTER NOISE; GRAVITATIONAL WAVE DETECTORS; LOCAL OSCILLATOR (LO); SIGNAL BEAM;

SIGNAL DETECTION;

EID: 34547525635     PISSN: 1559128X     EISSN: 15394522     Source Type: Journal    
DOI: 10.1364/AO.46.003389     Document Type: Article

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21. This fit was normalized to maximum value of the experimental data.
22. If the distances were not matched, the QPD might measure the beam when it has a Guoy phase different from that at the homodyne photodetectors and therefore might measure a different contribution of tilt and offset.
23. Subtracting the electronic noise below 10 Hz may be misleading, since electronic noise becomes the dominant noise source here.