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Published on: November 30, 2012
Polarization induced instabilities in external four-mirror Fabry-Perot cavities
Fabian Zomer1, Yasmina Fedala, Nicolas Pavloff
1Laboratoire de l'Accélérateur Linéaire, CNRS, Institut National de Physique Nucléaire et Physiquedes Particules, Université Paris Sud, Bâtiment 200, BP 34 Orsay Cedex, France. zomer@lal.in2p3.fr
Researchers investigated four-mirror optical resonators for passive stacking cavities. A tetrahedral mirror arrangement significantly enhances mechanical stability and reduces polarization instabilities in high-finesse Fabry-Perot cavities.
Area of Science:
- Optics and Photonics
- Optical Engineering
- Cavity Quantum Electrodynamics
Background:
- Passive stacking cavities are crucial for advanced optical systems.
- Mechanical stability and polarization properties are key challenges in optical resonator design.
- Fabry-Perot cavities are sensitive to mirror alignment and motion.
Purpose of the Study:
- To comparatively study the mechanical stability of various four-mirror optical resonators.
- To analyze polarization properties and identify sources of instability in stacking cavities.
- To determine an optimal four-mirror configuration for enhanced stability.
Main Methods:
- Theoretical analysis of four-mirror optical resonator configurations.
- Comparative study of mechanical stability and polarization characteristics.
- Investigation of mirror misalignment effects on cavity eigenmodes and stacking power.
Main Results:
- Mirror misalignments induce polarization and stacking power instabilities, escalating with cavity finesse.
- A tetrahedral configuration of four mirrors was identified as superior.
- The tetrahedral configuration reduces the instability parameter by over two orders of magnitude.
Conclusions:
- The tetrahedral four-mirror resonator design offers superior mechanical and polarization stability.
- This configuration mitigates instabilities caused by mirror motion and misalignment.
- The findings are critical for developing robust passive stacking cavities.
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