Resonantly Enhanced Axion-Photon Regeneration

Abstract

We point out that photon regeneration-experiments that search for the axion, or axion-like particles, may be resonantly enhanced by employing matched Fabry-Perot optical cavities encompassing both the axion production and conversion magnetic field regions. Compared to a simple photon regeneration experiment, which uses the laser in a single-pass geometry, this technique can result in a gain in rate of order ${\mathcal{F}}^2$, where $\mathcal{F}$ is the finesse of the cavities. This gain could feasibly be $10^{(10-12)}$, corresponding to an improvement in sensitivity in the axion-photon coupling, $g_{a\gamma \gamma }$ , of order ${\mathcal{F}}^{1/2}\sim 10^{(2.5-3)}$, permitting a practical purely laboratory search to probe axion-photon couplings not previously excluded by stellar evolution limits, or solar axion searches.

4 pages, 2 figures

Cited by in corpus (4)

• A Cavity Experiment to Search for Hidden Sector Photons
• Long Distance Signaling Using Axion-like Particles
• Extending the reach of axion-photon regeneration experiments towards larger masses with phase shift plates
• Effective field theory approach to light propagation in an external magnetic field