IEEE Access (Jan 2023)

Scalable Acoustical Frequency Tagging Coherent Beam Combining Based on Digital Signal Processing

  • Pawel R. Kaczmarek,
  • Aleksander Gluszek,
  • Arkadiusz Hudzikowski

DOI
https://doi.org/10.1109/ACCESS.2023.3324195
Journal volume & issue
Vol. 11
pp. 113284 – 113290

Abstract

Read online

We present the module of booster amplifier for coherent beam combining Master Oscillator Power Amplifier (MOPA) system to operate with a text narrow-linewidth seed laser. The goal was to achieve a highly modular system, manifested in the ease of changing the number of Coherent Beam Combining (CBC) channels. It uses a frequency tagging phase control scheme performed at acoustical frequencies, enabling a simple piezo fiber stretcher as actuating and tagging element and a cheap microcontroller to perform all the signal processing. The text four-channel CBC system with the proposed booster module was built to verify our assumptions and the whole system’s performance.

Keywords