Deep-learning-assisted, two-stage phase control method for high-power mode-programmable orbital angular momentum beam generation

2020 ◽  
Vol 8 (5) ◽  
pp. 715 ◽  
Author(s):  
Tianyue Hou ◽  
Yi An ◽  
Qi Chang ◽  
Pengfei Ma ◽  
Jun Li ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Deep Learning ◽  
Orbital Angular Momentum ◽  
High Power ◽  
Control Method ◽  
Phase Control ◽  
Two Stage ◽  
Beam Generation ◽  
Power Mode

scholarly journals High power two-color orbital angular momentum beam generation using vertical external cavity surface emitting lasers

2018 ◽  
Vol 112 (4) ◽  
pp. 041108 ◽  
Author(s):  
Michal L. Lukowski ◽  
Chris Hessenius ◽  
Jason T. Meyer ◽  
Ewan M. Wright ◽  
Mahmoud Fallahi
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
High Power ◽  
External Cavity ◽  
Cavity Surface ◽  
Beam Generation ◽  
Surface Emitting Lasers ◽  
Emitting Lasers

scholarly journals Performance Analysis of 3D Video Transmission over Multi-coded N-ary Orbital Angular Momentum FSO System using Deep-learning

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Shimaa A. El-Meadawy ◽  
Hossam M. H. Shalaby ◽  
Nabil A. Ismail ◽  
Ahmed E. A. Farghal ◽  
Fathi E. Abd El-Samie ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Deep Learning ◽  
Performance Analysis ◽  
Orbital Angular Momentum ◽  
Video Transmission ◽  
3D Video

Interferometric orbital angular momentum modedetection in turbulence with deep learning

2021 ◽  
Author(s):  
Mitchell Cox ◽  
Turgay Celik ◽  
Yuval genga ◽  
Alice Drozdov
Keyword(s):  
Angular Momentum ◽  
Deep Learning ◽  
Orbital Angular Momentum

scholarly journals All-fiber stable orbital angular momentum beam generation and propagation

2018 ◽  
Vol 26 (13) ◽  
pp. 17429 ◽  
Author(s):  
Xiaobo Heng ◽  
Jiulin Gan ◽  
Zhishen Zhang ◽  
Jiong Li ◽  
Muqiao Li ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Generation

Deep learning as a tool to distinguish between high orbital angular momentum optical modes

2016 ◽  
Author(s):  
E. M. Knutson ◽  
Sanjaya Lohani ◽  
Onur Danaci ◽  
Sean D. Huver ◽  
Ryan T. Glasser
Keyword(s):  
Angular Momentum ◽  
Deep Learning ◽  
Orbital Angular Momentum ◽  
Optical Modes

scholarly journals Measuring the orbital angular momentum of high-power laser pulses

2020 ◽  
Vol 27 (5) ◽  
pp. 053107
Author(s):  
R. Aboushelbaya ◽  
K. Glize ◽  
A. F. Savin ◽  
M. Mayr ◽  
B. Spiers ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
High Power ◽  
Laser Pulses ◽  
High Power Laser ◽  
Power Laser

scholarly journals Comprehensive investigation on producing high-power orbital angular momentum beams by coherent combining technology

2019 ◽  
Vol 7 ◽  
Author(s):  
Dong Zhi ◽  
Tianyue Hou ◽  
Pengfei Ma ◽  
Yanxing Ma ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
High Power ◽  
Free Space ◽  
Phase Array ◽  
Free Space Optical ◽  
Long Distance ◽  
Potential Wells ◽  
Beam Combination ◽  
Beam Array

High-power orbital angular momentum (OAM) beams have distinct advantages in improving capacity and data receiving for free-space optical communication systems at long distances. Utilizing the coherent combination of a beam array technique and helical phase approximation by a piston phase array, we have proposed a generating system for a novel high-power beam carrying OAM, which could overcome the power limitations of a common vortex phase modulator and a single beam. The characteristics of this generating method and the orthogonality of the generated OAM beams with different eigenstates have been theoretically analyzed and verified. Also a high-power OAM beam produced by coherent beam combination (CBC) of a six-element hexagonal fiber amplifier array has been experimentally implemented. Results show that the CBC technique utilized to control the piston phase differences among the array beams has a high efficiency of 96.3%. On the premise of CBC, we have obtained novel vortex beams carrying OAM of $\pm 1$ by applying an additional piston phase array modulation on the corresponding beam array. The experimental results agree approximately with the theoretical analysis. This work could be beneficial to areas that need high-power OAM beams, such as ultra-long distance free-space optical communications, biomedical treatments, and powerful trapping and manipulation under deep potential wells.

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