Note: Computer controlled rotation mount for large diameter optics

TL;DR

This paper presents a compact, computer-controlled rotation mount for large optics, enabling precise remote control of laser beam power in optical experiments.

Contribution

It introduces a novel motorized rotation mount with high precision and easy computer integration, suitable for large diameter optics in laser applications.

Findings

Achieves rotation precision better than 0.03 degrees.

Supports remote control via serial communication.

Designed for large 40 mm aperture optics.

Abstract

We describe the construction of a motorized optical rotation mount with a 40 mm clear aperture. The device is used to remotely control the power of large diameter laser beams for a magneto-optical trap (MOT). A piezo-electric ultrasonic motor on a printed circuit board (PCB) provides rotation with a precision better than 0.03 deg and allows for a very compact design. The rotation unit is controlled from a computer via serial communication, making integration into most software control platforms straightforward.