Coherent combining of large-scale fiber laser array over 21 km in turbulence based on a beam conformal projection system

2021 ◽  
Author(s):  
Jing Zuo ◽  
Fan Zou ◽  
Xin Zhou ◽  
Chao Geng ◽  
Feng Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Large Scale ◽  
Laser Array ◽  
Projection System ◽  
Coherent Combining

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

2022 ◽  
Vol 148 ◽  
pp. 107775
Author(s):  
Jinhu Long ◽  
Hongxiang Chang ◽  
Yuqiu Zhang ◽  
Tianyue Hou ◽  
Qi Chang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Phase Locking ◽  
Laser Array ◽  
Coherent Combining

Diffractive coherent combining of a 25 kW fiber laser array into a 19 kW Gaussian beam

2012 ◽  
Vol 37 (14) ◽  
pp. 2832 ◽  
Author(s):  
Shawn M. Redmond ◽  
Daniel J. Ripin ◽  
Charles X. Yu ◽  
Steven J. Augst ◽  
Tso Yee Fan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Gaussian Beam ◽  
Laser Array ◽  
Coherent Combining

Optimization of the arrangement of fiber laser array in beam coherent combining

2009 ◽  
Vol 56 (8) ◽  
pp. 1036-1043
Author(s):  
Jianfeng Li ◽  
Zhiyong Dai ◽  
Zhonghua Ou ◽  
Lixun Zhang ◽  
Yongzhi Liu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Array ◽  
Coherent Combining

Research on phase-detecting method for coherent combining beams in fiber laser array

2007 ◽  
Vol 3 (6) ◽  
pp. 455-458 ◽  
Author(s):  
Xing-chun Chu ◽  
Sheng-bao Zhan ◽  
Shang-hong Zhao ◽  
Yun-xia Li ◽  
Jie Xu
Keyword(s):  
Fiber Laser ◽  
Laser Array ◽  
Coherent Combining ◽  
Detecting Method

scholarly journals Automated Quality Assessment of Interferometric Ring Laser Data

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3425
Author(s):  
Andreas Brotzer ◽  
Felix Bernauer ◽  
Karl Ulrich Schreiber ◽  
Joachim Wassermann ◽  
Heiner Igel
Keyword(s):  
Quality Assessment ◽  
Ground Motion ◽  
Ring Laser ◽  
Degrees Of Freedom ◽  
Large Scale ◽  
Scientific Field ◽  
Optical Frequency ◽  
Laser Array ◽  
Laser Data ◽  
Rotational Motions

In seismology, an increased effort to observe all 12 degrees of freedom of seismic ground motion by complementing translational ground motion observations with measurements of strain and rotational motions could be witnessed in recent decades, aiming at an enhanced probing and understanding of Earth and other planetary bodies. The evolution of optical instrumentation, in particular large-scale ring laser installations, such as G-ring and ROMY (ROtational Motion in seismologY), and their geoscientific application have contributed significantly to the emergence of this scientific field. The currently most advanced, large-scale ring laser array is ROMY, which is unprecedented in scale and design. As a heterolithic structure, ROMY’s ring laser components are subject to optical frequency drifts. Such Sagnac interferometers require new considerations and approaches concerning data acquisition, processing and quality assessment, compared to conventional, mechanical instrumentation. We present an automated approach to assess the data quality and the performance of a ring laser, based on characteristics of the interferometric Sagnac signal. The developed scheme is applied to ROMY data to detect compromised operation states and assign quality flags. When ROMY’s database becomes publicly accessible, this assessment will be employed to provide a quality control feature for data requests.

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