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USA OptoSigma Corporation 1540 Scenic Avenue, Suite 150, Costa Mesa, CA. 92626 TEL. +1-949-851-5881 sales@optosigma.com USA

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In summary, beam expanders are used for fine focusing, reducing beam divergence and minimizing diffraction effect. Daheng Beam Expanders (GCO-14) are professionally designed for complicated systems and ideally used in combination with Daheng F-Theta lenses (GCO-31).

A beam expander is an optical system for changing the diameters of input and output beams. The product of the diameter and divergence for a laser beam remains constant between input and output. This means that, if the beam diameter increases from input, the divergence of the output will decrease. Beam expanders use this inverse-proportional relationship between the diameter and divergence to expand a laser beam, or to reduce the beam divergence. Low divergence allows for a smaller focus spot of a Gaussian beam.

UK Elliot Scientific Limited Unit 11 Sandridge Park, Porters Wood, St Albans, AL3 6PH TEL. +44 (0)1582 766 300 sales@elliotscientific.com United Kingdom

SINGAPORE OptoSigma SEA 83 Science Park Drive, #02-01.The Curie, 118258 TEL. +65 6909 9318 sales@optosigma-sea.com SINGAPORE