We report the first, to our knowledge, linear HCPCF-bundle for USP laser beam-delivery, power-modulation, and spatial-shaping. This bundle comprises four identical inhibited coupling HCPCFs arranged in a linear array with a relative pitch-variation of less than 2% relative variation in array pitch. Each HCPCF is equipped with an acousto-optic modulator (AOM) for independent power modulation. A laser beam, from 1030 nm wavelength, 100μJ energy USP laser, is split into four beams and coupled to each of the HCPCFs in the bundle using a diffractive optic element. The system's insertion loss (from input to output through the AOM) is measured to be over 70%. The bundle system emits an array of four Gaussian beams, each with equal energy and beam size (both having less than 1% variation beam to beam). Each beam's power can be modulated independently. This development marks a significant advancement in harnessing HCPCF technology in applications requiring high-power light with spatial and temporal structuring.
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