Coherent combining of a fiber laser array via cascaded internal phase control technique

J Long, J Zhang, H Chang, Q Chang, Y Deng… - Chinese Optics …, 2023 - opg.optica.org
We experimentally demonstrated a cascaded internal phase control technique. A laser array
with 12 channels was divided into three sub-arrays and a stage array, and phases of the sub …

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 …

Numerical simulation of the internal active phase-locking coherent beam combining system

K Jin, H Chang, J Long, R Su, Y Ma, P Zhou - Applied Optics, 2023 - opg.optica.org
As a promising way to realize high output power while maintaining high beam quality,
coherent beam combining (CBC) of fiber lasers has drawn much interest. Phase control is …

Internal phase control of fiber laser array based on the photodetector array

KK Jin, JH Long, HX Chang, RT Su, JY Zhang… - Chinese …, 2024 - iopscience.iop.org
Coherent beam combining (CBC) of fiber laser array is a promising technique to realize high
output power while maintaining near diffraction-limited beam quality. To implement CBC, an …

Distributed active phase-locking of an all-fiber structured laser array by a stochastic parallel gradient descent (SPGD) algorithm

H Chang, R Su, J Long, Q Chang, P Ma, Y Ma… - Optics …, 2022 - opg.optica.org
Coherent beam combining (CBC) of fiber laser array is a promising way to achieve high
output power. Phase control is one key point to implement CBC. Appropriate feedback …

System design for coherent combined massive fiber laser array based on cascaded internal phase control

J Long, R Su, T Hou, Q Chang, M Jiang, H Chang… - Applied Optics, 2022 - opg.optica.org
Coherent beam combining (CBC) of a fiber laser can scale the output power while
maintaining high beam quality. However, phase detection and control remain a challenge …

Compact internal sensing phase locking system for coherent combining of fiber laser array

J Long, H Chang, Y Zhang, T Hou, Q Chang… - Optics & Laser …, 2022 - Elsevier
A compact internal sensing phase locking system for coherent combining of large aperture
fiber laser beams is demonstrated in this paper. Herein, the phase noises in the laser …

Coherent beam combining of 7 fiber amplifiers based on all-fiber internal phase-locking technique

K Jin, H Chang, R Su, J Long, S Chen, J Zhang… - Optics & Laser …, 2024 - Elsevier
An all-fiber internal phase-locking coherent beam combining (CBC) system is experimental
demonstrated. Without the need for any external sampling elements, the relative phase …

Efficient phase-locking of 60 fiber lasers by stochastic parallel gradient descent algorithm

H Chang, J Xi, R Su, P Ma, Y Ma, P Zhou - Chinese Optics Letters, 2020 - opg.optica.org
Coherent beam combining of 60 fiber lasers by using the stochastic parallel gradient
descent algorithm has been demonstrated. The functions of pinhole (s) on the power …

A high-speed, high-efficiency phase controller for coherent beam combining based on SPGD algorithm

ZM Huang, CL Liu, JF Li, DY Zhang - Quantum Electronics, 2014 - iopscience.iop.org
A phase controller for coherent beam combining (CBC) of fibre lasers has been designed
and manufactured based on a stochastic parallel gradient descent (SPGD) algorithm and a …