Deep reinforcement learning for coherent beam combining applications

H Tünnermann, A Shirakawa - Optics express, 2019 - opg.optica.org
Coherent beam combining is a method to scale the peak and average power levels of laser
systems beyond the limit of a single emitter system. This is achieved by stabilizing the …

Deep reinforcement learning for tiled aperture beam combining in a simulated environment

H Tünnermann, A Shirakawa - Journal of Physics: Photonics, 2021 - iopscience.iop.org
Coherent beam combining is a method for combining multiple emitters into one high power
beam by means of relative phase stabilization. Usually, modulation or interferometric …

Deep-learning-based phase control method for tiled aperture coherent beam combining systems

T Hou, Y An, Q Chang, P Ma, J Li, D Zhi… - High Power Laser …, 2019 - cambridge.org
We incorporate deep learning (DL) into tiled aperture coherent beam combining (CBC)
systems for the first time, to the best of our knowledge. By using a well-trained convolutional …

Single step phase optimisation for coherent beam combination using deep learning

B Mills, JA Grant-Jacob, M Praeger, RW Eason… - Scientific Reports, 2022 - nature.com
Coherent beam combination of multiple fibres can be used to overcome limitations such as
the power handling capability of single fibre configurations. In such a scheme, the focal …

Stabilization of the 81-channel coherent beam combination using machine learning

D Wang, Q Du, T Zhou, D Li, R Wilcox - Optics express, 2021 - opg.optica.org
We develop a rapidly converging algorithm for stabilizing a large channel-count diffractive
optical coherent beam combination. An 81-beam combiner is controlled by a novel, machine …

Coherent beam combination based on Q-learning algorithm

X Zhang, P Li, Y Zhu, C Li, C Yao, L Wang, X Dong… - Optics …, 2021 - Elsevier
Coherent beam combination (CBC) is an effective method to break the limiting power of a
single fiber laser. The Q-learning algorithm is one of the reinforcement learning algorithms …

High power compatible internally sensed optical phased array

LE Roberts, RL Ward, SP Francis, PG Sibley… - Optics express, 2016 - opg.optica.org
The technical embodiment of the Huygens-Fresnel principle, an optical phased array (OPA)
is an arrangement of optical emitters with relative phases controlled to create a desired …

External cavity beam combining of 21 semiconductor lasers using SPGD

J Montoya, SJ Augst, K Creedon, J Kansky, TY Fan… - Applied Optics, 2012 - opg.optica.org
Active coherent beam combining of laser oscillators is an attractive way to achieve high
output power in a diffraction limited beam. Here we describe an active beam combining …

Coherent beam combining of a fiber lasers array based on cascaded phase control

R Su, Z Zhang, P Zhou, Y Ma… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
A novel approach for active coherent beam combining of a large number of fiber lasers
based on cascaded phase control is demonstrated. The principle of this approach is briefly …

1.5 kW incoherent beam combining of four fiber lasers using adaptive fiber-optics collimators

C Geng, B Zhao, E Zhang, W Luo, Y Tan… - IEEE Photonics …, 2013 - ieeexplore.ieee.org
We demonstrate the incoherent beam combining (BC) of four high-power single-mode fiber
lasers. Adaptive fiber-optics collimators (AFOC) of 0.5 kW-level are developed to correct the …