We present investigations into high-power scaling of solid-state amplified spontaneous emission (ASE) laser sources by use of two high-gain bounce amplifiers. The sources deliver high power with a high-quality spatial output, but unlike a laser they have a high misalignment tolerance and do not require a precisely aligned cavity. In one system with two amplifiers, we demonstrate an ASE source with of output power with good spatial quality, in the horizontal and in the vertical. In a more sophisticated setup, the two amplifiers are arranged in a loop configuration producing of ASE output with near-diffraction-limited spatial quality, with in the horizontal and in the vertical, at an optical-to-optical conversion efficiency.
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