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          Institute: MPI für Gravitationsphysik     Collection: Theoretical Gravitational Wave Physics     Display Documents

ID: 318013.0, MPI für Gravitationsphysik / Theoretical Gravitational Wave Physics
Development of a control scheme of homodyne detection for extracting ponderomotive squeezing from a Michelson interferometer
Authors:Sakata, Shihori; Sato, Shuichi; Somiya, Kentaro; Fukushima, Mitsuhiro; Kawamura, Seiji; Sugamoto, Akio
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Journal of Physics: Conference Series
Volume (in Journal):32
Start Page:464
End Page:469
Name of Conference/Meeting:Sixth Edoardo Amaldi Conference on Gravitational Waves
Place of Conference/Meeting:Bankoku Shinryoukan, Okinawa, Japan
(Start) Date of Conference/Meeting
End Date of Conference/Meeting 
Review Status:not specified
Audience:Not Specified
Abstract / Description:We developed a control scheme of homodyne detection. To operate the homodyne detector as easy as possible, a simple Michelson interferometer is used. Here a motivation that the control scheme of the homodyne detection is developed is for our future experiment of extracting the ponderomotively squeezed vacuum fluctuations. To obtain the best signalto- noise ratio using the homodyne detection, the homodyne phase should be optimized. The optimization of the homodyne phase is performed by changing a phase of a local oscillator for the homodyne detection from a point at which a signal is maximized. In fact, in this experiment, using the developed control scheme, we locked the Michelson interferometer with the homodyne detector and changed the phase of the local oscillator for the homodyne detection. Then, we measured signals quantity changed by changing the phase of the local oscillator for the homodyne detection. Here we used the output from the homodyne detection as the signal.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Yanbei Chen
Affiliations:MPI für Gravitationsphysik/Theoretical Gravitational Wave Physics
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