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A motorized rotation mount for fast and reproducible optical polarization control [dataset] Open Access

We present a simple motorised 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, minimising inertia and mechanical complexity. A simple machined adapter is used to mount the wave plate. We characterise the performance of the device, focusing on its capability to switch a beam between the output ports of a polarizing beamsplitter 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 degrees. The rotation is highly reproducible, with the stepper motor not missing a step in 2000 repeated tests over 11 hours.

Descriptions

Resource type

Dataset

Contributors

Creator: Raghuram, Adarsh P. ¹
Contact person: Raghuram, Adarsh P. ¹
Data collector: Raghuram, Adarsh P. ¹
Creator: Mortlock, Jonathan M. ¹
Data collector: Mortlock, Jonathan M. ¹
Creator: Bromley, Sarah L. ¹
Creator: Cornish, Simon L. ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council
UKRI Frontier Research Grant
Durham University

Research methods

Other description

Includes dataset and code.

Keyword

Rotation mount
Fast polarization control

Subject

Location

Language

Cited in

Identifier

ark:/32150/r1n870zq866
doi:10.15128/r1n870zq866

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

A.P. Raghuram

Date Uploaded

19 December 2022, 17:12:40

Date Modified

20 December 2022, 15:12:05

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Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 49267652

Last modified: 2022:12:20 10:07:12+00:00

Filename: Rotation_Mount_Data.zip

Original checksum: 8a0dec203da8d8866dc6aa7f253720f0