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Power-recycled Michelson interferometer with resonant sideband extraction
Daniel A Shaddock1, Malcolm B Gray, Conor Mow-Lowry
1Department of Physics, Faculty of Science, Australian National University, Australian Capital Territory 0200, Australia.
Applied Optics
|March 18, 2003
Summary
We developed a control system for power-recycled Michelson interferometers that allows flexible frequency response tuning without interrupting operation. This system enables precise control for advanced optical measurements.
Area of Science:
- Optics and Photonics
- Interferometry
- Control Systems Engineering
Background:
- Advanced optical instruments like Michelson interferometers require sophisticated control systems for precise measurements.
- Power recycling and resonant sideband extraction are key techniques for enhancing interferometer sensitivity.
Purpose of the Study:
- To present a novel control system for power-recycled Michelson interferometers with resonant sideband extraction.
- To demonstrate the system's capability to lock multiple degrees of freedom and tune the signal cavity.
- To enable rapid, non-disruptive changes to the instrument's frequency response.
Main Methods:
- Implementation of a control system for four degrees of freedom and signal cavity detuning.
- Experimental setup on a benchtop prototype of a power-recycled Michelson interferometer.
- Broadband frequency response measurements for various signal cavity detunings.
Main Results:
- Successful locking of four degrees of freedom to a fixed point.
- Successful locking of the signal cavity to an arbitrary detuned point.
- Demonstration of rapid frequency response tuning without operational interruption.
Conclusions:
- The developed control system offers significant flexibility for optimizing interferometer performance.
- The system's ability to dynamically adjust frequency response is crucial for adaptable optical sensing.
- Experimental validation confirms the system's effectiveness on a prototype interferometer.