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Experimental Phase Stabilization of a 397-Channel Laser Beam Array Via Image Processing in Dynamic Noise Environment

A phase-locking module is firstly validated for coherent beam combining (CBC) systems of near 400 laser beams in dynamic noise environment. It is based on a 2-dimensional image processing in the phase-locking module to calculate the piston phase of the laser array in the CBC systems. Through the designed phase-locking module, the piston phase distribution of the laser array can be corrected simultaneously, accurately, and rapidly as fast as ∼ 2000 Hz. Proof-of-concept experiment is demonstrated for coherent beam combining of up to 397 fiber laser emitters based on the designed phase-locking system to correct the phase noises measured from a real fiber amplifier below 1 kHz. The ratio of power in the Airy disk is as high as 59.51 % when the phase compensation is carried out for the piton phase noise measured in a kW-class fiber amplifier. The phase residue error in the close-loop is better than λ /31.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.40 No.19 October 1, 2022

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 6542-6547

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

IMAGE PROCESSING
COHERENT BEAM COMBINING
FIBER LASER ARRAY
PHASE STABILIZATION

Info Detail Spesifik

DOI: 10.1109/JLT.2022.3195822

Pernyataan Tanggungjawab

Qi Chang, Tianyue Hou, Jinhu Long, Yu Deng, Hongxiang Chang, Pengfei Ma, Rongtao Su, Yanxing Ma, Pu Zhou

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