Diffractive optical elements (DOEs) for high-power industrial lasers

Diffractive optical elements (DOEs) for high-power industrial lasers

Coherent Corp. introduced a product line of diffractive optical elements (DOEs) for high-power industrial lasers. Innovation in optical components is a key factor in significantly lowering the cost of ownership of industrial lasers and accelerating their adoption in both existing and new applications. Coherent leverages its proprietary nanoimprint technology and design simulation tools to offer a new line of highly customized DOEs that achieve very high optical efficiency and extremely uniform laser beams. The DOEs are available with precision optical coatings that ensure high reliability in kilowatt-class industrial lasers for a wide range of applications, including for welding, cutting, and additive manufacturing.

DOEs offer a unique opportunity for industrial laser designers to combine multiple optical functions into one optical element, greatly simplifying system-level assembly. Such capabilities translate into much lower cost of ownership and greater reliability, due to the lower number of parts, the greater ease of optical alignment, and the lower number of failure mechanisms over time.

The new nanoimprint technology is optimized for the laser processing market. It expands Coherent’s existing DOE technology consisting of industry leading volume and surface Bragg gratings with applications in communications and medicine. Coherent also offers wafer-scale all-glass DOEs based on metasurfaces, or metaoptics elements (MOE), that are ideal for large volume applications such as in consumer electronics.

Coherent’s broad portfolio of components for industrial lasers also includes high-power collimators, beam expanders, f-theta lenses, optical isolators, and galvo mirrors.