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arXiv · 2410.23198

Interferometric Differential High-Frequency Lock-In Probe for Laser-Induced Vacuum Birefringence

R. G. Bullis·U. D. Jentschura·D. C. Yost
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Abstract

We propose a measurement of laser-induced vacuum birefringence through the use of pulsed lasers coupled to femtosecond optical enhancement cavities. This measurement technique features cavity-enhanced pump and probe pulses, as well as an independent control pulse. The control pulse allows for a differential measurement where the final signal is obtained using high-frequency lock-in detection, greatly mitigating time-dependent cavity birefringence as an important and possibly prohibitive systematic effect. In addition, the method features the economical use of laser power, and results in a relatively simple experimental setup.

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R. G. Bullis, U. D. Jentschura, D. C. Yost. 2024-10-30. Interferometric Differential High-Frequency Lock-In Probe for Laser-Induced Vacuum Birefringence. https://doi.org/10.1103/physrevresearch.7.023026

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