Optical torques in suspended Fabry–Perot interferometers

• Published in: Physics letters. A Vol. 354; no. 3; pp. 167 - 172
• Main Authors: Sidles, John A., Sigg, Daniel
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 29.05.2006
• Subjects: Fabry–Perot; Mirrors; Optomechanical; Torque; Torsion; Torque; Fabry–Perot; 07.60.Ly; Optomechanical; 04.80.Nn; Mirrors; Torsion; 95.55.Ym

High-power Fabry–Perot cavities with suspended mirrors are employed in gravitational wave detection. The mirrors in such interferometers are subject to forces and torques that are exerted by light pressure. This Letter derives a closed-form expression for the static torsional stiffness due to this e...