3 citations · 3 across the 4 of their papers we have counts for
9 papers
Heterodyne-Enhanced Sensing of Cavity Mode Spacing
Aaron D. Spector, Laura Roberts
Characterizing the frequencies of resonant modes is critical to a wide variety of experimental applications. In this work we demonstrate a heterodyne-enhanced sensing scheme capabl…
Two-Laser Heterodyne Detection System for ALPS II
Henry Frädrich, Aaron D. Spector, Axel Lindner +1
The Any Light Particle Search II employs a highly sensitive heterodyne detection system to measure an ultra-weak electromagnetic field that is reconverted from axions inside a rege…
Absolute Length Sensing in a Long-Baseline, High-Finesse Optical Cavity
Todd Kozlowski, Henry Frädrich, Aaron D. Spector
The relative phase between two lasers in transmission of an optical cavity can be used to continuously measure its absolute length with sub-micron precision. The first laser is kep…
Any Light Particle Searches with ALPS II: Description of the first science campaign
Aaron D. Spector, Daniel C. Brotherton, Ayman Hallal +23
From February to May of 2024 the Any Light Particle Search II (ALPS II) conducted its first science campaign using the `light-shining-through-a-wall' technique to search for pseudo…
Any Light Particle Searches with ALPS II: first science results
Daniel C. Brotherton, Zachary R. Bush, Sandy Croatto +37
The light-shining-through-a-wall experiment ALPS II at DESY in Hamburg searched for axions and similar lightweight particles in its first science campaign from February to May 2024…
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…
Polarimetric searches for axion dark matter and high-frequency gravitational waves using optical cavities
Camilo García-Cely, Luca Marsili, Andreas Ringwald +1
We revisit birefringence effects associated with the evolution of the polarization of light as it propagates through axion dark matter or the background of a passing gravitational…
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…