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Updated: Feb 5, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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Laser beam angular stabilization system based on a compact interferometer and a precise double-wedge deflector.

Krzysztof Tyszka1, Marek Dobosz1

  • 1Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, Św. A. Boboli 8, 02-525 Warsaw, Poland.

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This summary is machine-generated.

This study presents an active laser beam angular stabilization system that significantly enhances pointing stability for interferometric measurements. The novel design achieves a hundredfold reduction in beam deviations, improving precision.

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Area of Science:

  • Optics and Photonics
  • Precision Engineering
  • Measurement Science

Background:

  • Precise interferometric measurements demand high laser beam pointing stability.
  • Existing methods often face limitations in sensor size and steering accuracy.
  • Active stabilization is crucial for reducing angular deviations in laser systems.

Purpose of the Study:

  • To design and evaluate an active laser beam angular stabilization system.
  • To achieve long-term, independent stabilization in horizontal and vertical planes.
  • To significantly reduce laser beam deviations for enhanced measurement precision.

Main Methods:

  • Developed a compact interferometric sensor for measuring laser beam angular deflection.
  • Utilized a double wedge-prism beam deflector for precise laser beam steering.
  • Implemented a new measurement algorithm tailored for the stabilization system.

Main Results:

  • Achieved a hundredfold reduction in output beam deviations.
  • Demonstrated long-term angular stabilization independently in horizontal and vertical planes.
  • Reduced beam angular deviations amplitude to 100 nrad/h (double standard deviation).

Conclusions:

  • The designed active laser beam angular stabilization system effectively enhances pointing stability.
  • The combination of an interferometric sensor and double wedge-prism deflector proves successful.
  • The system offers a significant improvement for applications requiring high-precision laser beam control.