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Absolute Length Sensing in a Long-Baseline, High-Finesse Optical Cavity
Todd Kozlowski, Henry Frädrich, Aaron D. Spector
The paper presents a method using two phase‑locked lasers to continuously measure the absolute length of a 123 m high‑finesse optical cavity with sub‑micron precision, enabling nan…
Demonstration of an interferometric technique for measuring vacuum magnetic birefringence with an optical cavity
Aaron D. Spector, Todd Kozlowski, Laura Roberts
Vacuum magnetic birefringence (VMB) is an effect predicted by quantum electrodynamics, in which the vacuum behaves as a non-linear optical medium and exhibit a birefringence in the…
Design and Performance of the ALPS II Regeneration Cavity
Todd Kozlowski, Li-Wei Wei, Aaron D. Spector +12
The Regeneration Cavity (RC) is a critical component of the Any Light Particle Search II (ALPS II) experiment. It increases the signal from possible axions and axion-like particles…
Optical cavity characterization with a mode-matched heterodyne sensing scheme
Aaron D. Spector, Todd Kozlowski
We describe a technique for measuring the complex reflectivity of an optical cavity with a resonant local oscillator laser and an auxiliary probe laser, each coupled via opposite e…