Adarsh Raghuram adarsh.p.raghuram@durham.ac.uk
PGR Student Doctor of Philosophy
Adarsh Raghuram adarsh.p.raghuram@durham.ac.uk
PGR Student Doctor of Philosophy
Jonathan Mortlock jonathan.m.mortlock@durham.ac.uk
Postdoctoral Research Associate
Sarah L. Bromley
Professor Simon Cornish s.l.cornish@durham.ac.uk
Professor
We present a simple motorized rotation mount for a half-wave plate that can be used to rapidly change the polarization of light. We use the device to switch a high power laser beam between different optical dipole traps in an ultracold atom experiment. The device uses a stepper motor with a hollow shaft, which allows a beam to propagate along the axis of the motor shaft, minimizing inertia and mechanical complexity. A simple machined adapter is used to mount the wave plate. We characterize the performance of the device, focusing on its capability to switch a beam between the output ports of a polarizing beam splitter cube. We demonstrate a switching time of 15.9(3) ms, limited by the torque of the motor. The mount has a reaction time of 0.52(3) ms and a rotational resolution of 0.45(4)°. The rotation is highly reproducible, with the stepper motor not missing a step in 2000 repeated tests over 11 h.
Raghuram, A. P., Mortlock, J. M., Bromley, S. L., & Cornish, S. L. (2023). A motorized rotation mount for the switching of an optical beam path in under 20 ms using polarization control. Review of Scientific Instruments, 94(6), https://doi.org/10.1063/5.0139647
Journal Article Type | Article |
---|---|
Acceptance Date | May 14, 2023 |
Online Publication Date | Jun 1, 2023 |
Publication Date | Jun 1, 2023 |
Deposit Date | Aug 17, 2023 |
Publicly Available Date | Aug 17, 2023 |
Journal | Review of Scientific Instruments |
Print ISSN | 0034-6748 |
Electronic ISSN | 1089-7623 |
Publisher | American Institute of Physics |
Peer Reviewed | Peer Reviewed |
Volume | 94 |
Issue | 6 |
DOI | https://doi.org/10.1063/5.0139647 |
Keywords | Instrumentation |
Public URL | https://durham-repository.worktribe.com/output/1720182 |
Published Journal Article
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Copyright Statement
© 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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