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Comparison of beam scans over the main three axes in the focal region of the beam in water as measured directly at a low power level and linearly projected from the hologram measured with all elements operating. For this comparison, the projected field was scaled to reflect a 5.0 V output level for holography measurements versus a 2.5 V level for direct focal measurements. The z axis corresponds to the axis of beam propagation, while the x and y axes lie in the focal plane.
