The REO® heritage originated in 1980 as the electro-optics division of Particle Measuring Systems and, over time, gained significant expertise in the manufacture of HeNe lasers, super-polished optical surfaces, and high-performance thin film coatings using ion beam sputtering technology. In 1993, the division branched off to establish REO Inc., which Excelitas later acquired in 2018.

Today, Excelitas is one of the industry’s most comprehensive providers of optical manufacturing technology and capabilities worldwide, including expert design and engineering resources, wide-ranging optical fabrication and coatings capabilities, precision assembly expertise and extensive in-house metrology to ensure uncompromising quality and performance. With a global footprint of state-of-the-art optical production facilities, Excelitas delivers custom optical components and assemblies for the most demanding applications in lasers, military/aerospace, semiconductor, materials processing, telecommunications, and life sciences. 

Our industry-recognized REO HeNe Lasers are uniquely designed and manufactured with proprietary laser mirrors to deliver a fully-stabilized, high-performance laser product for laser-based instrumentation and metrology applications requiring long-coherence length and high amplitude stability. 

See below to learn more about our REO HeNe Lasers or Custom Optical Components and Assemblies.

Excelitas' HeNe Lasers are now available to purchase online at

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