Coherent beam combining is a power scaling technique, where multiple laser beams are combined into a single output with preserved beam quality and correspondingly enhanced power. The key to success in CBC is ensuring that all combined beams share a stable mutual coherence: their phases must be precisely synchronized and their wavefronts properly aligned.
Achieving and maintaining this delicate phase alignment typically involves fine-tuning the path length of each beam. Fiber optic delay lines solve this challenge by allowing operators to adjust the optical path length with high accuracy and stability.
