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Small optic suspensions for Advanced LIGO input optics and other precision optical experiments.
The Review of Scientific Instruments
|December 3, 2016
Summary
We designed compact optic suspensions to reduce seismic noise for the Advanced Laser Interferometer Gravitational Wave Observatory. These suspensions isolate optics in all six directions, with sensing and damping capabilities.
Area of Science:
- Seismology
- Optics
- Gravitational Wave Detection
Background:
- Seismic motion is a significant noise source for sensitive instruments like gravitational wave detectors.
- Out-of-cavity optics in the input optics subsystem require effective isolation from environmental vibrations.
Purpose of the Study:
- To design and evaluate small optic suspensions for seismic motion suppression.
- To improve the performance of the input optics subsystem for gravitational wave observatories.
Main Methods:
- Development of compact, single-stage optic suspension systems.
- Implementation of isolation in all six degrees of freedom.
- Integration of local sensing and actuation for three degrees of freedom.
- Incorporation of passive damping for the remaining three degrees of freedom.
Main Results:
- Successful design and performance validation of small optic suspensions.
- Demonstrated suppression of seismic motion for out-of-cavity optics.
- Achieved full six-degree-of-freedom isolation with integrated sensing and damping.
Conclusions:
- The developed optic suspensions effectively mitigate seismic noise in gravitational wave observatories.
- These compact suspensions are a viable solution for enhancing the sensitivity of the input optics subsystem.
- The design offers a robust method for isolating critical optical components from environmental disturbances.
