2-dimensional KTN deflector enabled large capacity time division multiplexing based beam combining

Yun Goo Lee; Annan Shang Jr.; Ruijia Liu; Wei Zhang; Shizhuo Yin

doi:10.1117/12.2596904

2 August 2021 2-dimensional KTN deflector enabled large capacity time division multiplexing based beam combining

Yun Goo Lee, Annan Shang Jr., Ruijia Liu, Wei Zhang, Shizhuo Yin

Proceedings Volume 11826, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV; 118260B (2021) https://doi.org/10.1117/12.2596904
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

In this paper, we present 2-dimensional (2D) large capacity time-division multiplexing (TDM) laser beam combining technique by potassium tantalate niobate (KTN) electro-optic (EO) beam deflectors. The use of the 2D TDM approach in laser beam combining brings the following key advantages: (1) a large multiplexing capacity compared to 1-dimensional combining, (2) high spatial and spectral beam quality (the combined laser beam has the same spatial and spectral beam profile as the initial individual laser beams), and (3) independency of the phase fluctuation of individual laser beams due to the nature of incoherent laser beam combining. To demonstrate an implementation of 2D beam combining, we recorded the beam after passing KTN crystals with a CCD camera. Our result shows beam combining with a high beam quality, leading to the higher capacity of the TDM technique, which can play a crucial role in applications such as highenergy lasers, laser manufacturing, and large-capacity high-speed laser manufacturing (3D printing).

Conference Presentation

Citation Download Citation

Yun Goo Lee, Annan Shang Jr., Ruijia Liu, Wei Zhang, and Shizhuo Yin "2-dimensional KTN deflector enabled large capacity time division multiplexing based beam combining", Proc. SPIE 11826, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XV, 118260B (2 August 2021); https://doi.org/10.1117/12.2596904

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