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Ring laser gyroscopes from G&H are deployed in commercial aircraft, missiles, satellites, and other military vehicles. Vertical integration enables us to supply the entire ring laser gyroscope package: RLG frame and optical components. Our integration of capabilities delivers superior performance and streamlines sourcing.

There are many components within the ring laser gyroscope (RLG) – each performs unique functions and is optimized accordingly.

The Zerodur® frame must deliver maximal stability over a large range of operating environments (namely, temperature, humidity, and environmental composition). We have 40 years of experience producing high-quality, consistent, Zerodur® frames.

Flat, wedged, and curved mirrors used in RLGs are superpolished with surface roughness better than 1 Å RMS with high-reflectivity low-loss IBS coatings designed to survive extreme environmental conditions.

Precision beam splitters, prisms, and wedges complete the assembly.


From high transmission broadband anti-reflection coatings to V-coats for high energy applications, our extensive coating capabilities deliver performance across the spectrum from the UV to the FIR. Take a closer look at our Coating Capabilities page.


We have made a significant investment in metrology equipment to ensure that our customers receive quality, high-performing products. More details on our metrology capabilities can be found on our metrology page.

Environmental testing

Environmental testing of components and coatings is critical for the assurance of performance in rugged conditions. G&H environmental testing capabilities include MIL-C-675C, MIL-C-48497A, MIL-E-12397, and MIL-M-13508C for endurance against abrasion, adhesion, humidity, temperature, and environmental conditions.