First experimental demonstration of coherent beam combining of more than 100 beams

Hongxiang Chang; Qi Chang; Jiachao Xi; Tianyue Hou; Rongtao Su; Pengfei Ma; Jian Wu; Can Li; Man Jiang; Yanxing Ma; Pu Zhou

doi:doi:10.1364/PRJ.409788

Photonics Research, 2020, 8 (12): 12001943, Published Online: Dec. 1, 2020

First experimental demonstration of coherent beam combining of more than 100 beams Download： 788次

Hongxiang Chang ¹Qi Chang ¹Jiachao Xi ¹Tianyue Hou ¹Rongtao Su ^1,2,*Pengfei Ma ¹Jian Wu ¹Can Li ¹Man Jiang ¹Yanxing Ma ¹Pu Zhou ^1,3,*

Author Affiliations

¹ College of Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

² e-mail: surongtao@126.com

³ e-mail: zhoupu203@163.com

Figures & Tables

Fig. 1. Experiment setup.

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Fig. 2. Structure of optical fiber connector. (a) Overall view. (b) Bottom view. (c) Sectional view. (d) Principle of operation for homemade connector.

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Fig. 3. Long-exposure far-field pattern. (a) Measured in open loop. (b) Measured in close loop. (c) Simulated result.

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Fig. 4. Normalized variation of energy in the pinhole in closed and open loops.

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Fig. 5. (a) Frame of two adjoining spots. (b) Segmented spots and calculated centroids.

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Fig. 6. Frequency histogram and fitting curve of relative tilt angles of (a) x1, (b) y1, (c) x2, and (d) y2.

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Fig. 7. Scatter plot of beam spot 1 against beam spot 2 for (a) x-axis and (b) y-axis.

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Fig. 8. (a) Normalized power of each channel. (b) Power measured of each channel.

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Fig. 9. (a) Ideal far-field pattern. (b) Far-field pattern with N(0,2) distribution dynamic tilt errors. (c) Far-field pattern with N(0,2) distribution dynamic tilt errors and λ/22 piston phase errors. (d) Far-field pattern with dynamic tilt errors, phase errors, and power inconsistency. (e) Far-field pattern of experiment.

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Table1. Contributions Counting for the PIB Loss

Contributions	PIB Loss
Dynamic tilt error	$\sim 26.4 %$
Phase error	$\sim 0.7 %$
Power inconsistency	$\sim 1.9 %$
Others	$\sim 4.9 %$

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Hongxiang Chang, Qi Chang, Jiachao Xi, Tianyue Hou, Rongtao Su, Pengfei Ma, Jian Wu, Can Li, Man Jiang, Yanxing Ma, Pu Zhou. First experimental demonstration of coherent beam combining of more than 100 beams[J]. Photonics Research, 2020, 8(12): 12001943.

First experimental demonstration of coherent beam combining of more than 100 beams Download： 788次

Fig. 1. Experiment setup.

Fig. 2. Structure of optical fiber connector. (a) Overall view. (b) Bottom view. (c) Sectional view. (d) Principle of operation for homemade connector.

Fig. 3. Long-exposure far-field pattern. (a) Measured in open loop. (b) Measured in close loop. (c) Simulated result.

Fig. 4. Normalized variation of energy in the pinhole in closed and open loops.

Fig. 5. (a) Frame of two adjoining spots. (b) Segmented spots and calculated centroids.

Fig. 6. Frequency histogram and fitting curve of relative tilt angles of (a) x1, (b) y1, (c) x2, and (d) y2.

Fig. 7. Scatter plot of beam spot 1 against beam spot 2 for (a) x-axis and (b) y-axis.

Fig. 8. (a) Normalized power of each channel. (b) Power measured of each channel.

Table1. Contributions Counting for the PIB Loss

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First experimental demonstration of coherent beam combining of more than 100 beams Download： 788次

Fig. 1. Experiment setup.

Fig. 2. Structure of optical fiber connector. (a) Overall view. (b) Bottom view. (c) Sectional view. (d) Principle of operation for homemade connector.

Fig. 3. Long-exposure far-field pattern. (a) Measured in open loop. (b) Measured in close loop. (c) Simulated result.

Fig. 4. Normalized variation of energy in the pinhole in closed and open loops.

Fig. 5. (a) Frame of two adjoining spots. (b) Segmented spots and calculated centroids.

Fig. 6. Frequency histogram and fitting curve of relative tilt angles of (a) x1, (b) y1, (c) x2, and (d) y2.

Fig. 7. Scatter plot of beam spot 1 against beam spot 2 for (a) x-axis and (b) y-axis.

Fig. 8. (a) Normalized power of each channel. (b) Power measured of each channel.

Table1. Contributions Counting for the PIB Loss

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