High-beam-quality sealed-off master oscillator – power amplifier system oscillating in the visible spectral range on atomic copper transitions for micromachining in research and technology

High-beam-quality sealed-off master oscillator – power amplifier system is developed and studied based on a copper bromide vapor laser and oscillating on atomic copper self-terminating transitions. A detailed study on the laser beam divergence is carried out demonstrating the capability of CuBr vapor laser systems to emit diffraction-limited laser beams. Precise microprocessing of various materials, such as optical grade fused quartz, Si, stainless steel, is also implemented. (paper)