Papers › A low-steering piezo-driven mirror
A low-steering piezo-driven mirror
E. Magnan, J. Maslek, C. Bracamontes, A. Restelli, T. Boulier, J. V. Porto
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We present a piezo-driven translatable mirror with excellent pointing stability, capable of driving at frequencies up to tens of kilohertz. Our system uses a tripod of piezo actuators with independently controllable drive voltages, where the ratios of the individual drive voltages are tuned to minimize residual tilting. Attached to a standard {\varnothing}= 12.7mm mirror, the system has a resonance-free mechanical bandwidth up to 51kHz, with displacements up to 2{\mu}m at 8kHz. The maximum static steering error is 5.5rad per micrometer displaced and the dynamic steering error is lower than 0.6rad/{\mu}m. This simple design should be useful for a large set of optical applications where tilt-free displacements are required, and we demonstrate its application in an ensemble of cold atoms trapped in periodically driven optical lattices.
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