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).
In this study, we report an experimental analysis on the triggering performance of a GaAs photoconductive semiconductor switch (PCSS) array. Resistors in parallel are known to outperform a single resistor in terms of heat management, current manipulation, wattage control, etcetera. Reconstructing the shape of resistors to obtain such a performance can impose limitations that inhibit it to compete with its parallel counterpart. The creation and synchronous triggering of a PCSS array may also result in an improved current and triggering performance which can be useful for high-speed nanosecond applications.
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