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First step toward a benchtop model of the Laser Interferometer Space Antenna
James Ira Thorpe1, Rachel Jean Cruz, Shannon Reynier Sankar
1Department of Physics, University of Florida, PO Box 118440, Gainesville, Florida 32611, USA. ithorpe@phys.ufl.edu
Optics Letters
|January 14, 2005
Summary
Researchers developed a digital delay buffer technique to simulate long optical paths. This method creates synthetic interferometers and accurately predicts their response, aiding in simulating space missions.
Area of Science:
- Optical physics
- Interferometry
- Digital signal processing
Background:
- Simulating large optical path lengths is crucial for advanced experiments.
- Traditional methods for achieving long optical paths can be complex and costly.
- Digital delay buffers offer a novel approach to optical path simulation.
Purpose of the Study:
- To present a technique for simulating large optical path lengths using digital delay buffers.
- To create a synthetic interferometer with an arbitrarily long arm.
- To validate the simulation technique by comparing experimental results with theoretical predictions.
Main Methods:
- Utilizing digital delay buffers to simulate extended optical path lengths.
- Constructing a synthetic interferometer with a digitally controlled arm length.
- Measuring the interferometer's response to phase and frequency modulation.
Main Results:
- The digital delay buffer technique successfully simulated large optical path lengths.
- The synthetic interferometer exhibited behavior consistent with theoretical predictions.
- Measurements of phase and frequency modulation response matched simulation expectations.
Conclusions:
- The presented digital delay buffer technique is a viable method for simulating long optical path lengths.
- This technique can be applied to create synthetic interferometers for various research purposes.
- The method shows potential for simulating complex space missions like the Laser Interferometer Space Antenna (LISA).