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Quality Assurance

The G&H Quality function incorporates site based quality management, compliance activities, process and tools and continuous improvement.

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About Us


G&H is a photonics technology business headquartered in Ilminster Somerset, UK with operations in the USA and Europe. A world leader in optical designing, testing and manufacturing, we work with OEM customers worldwide, providing optical systems, assemblies and components for demanding applications, often for deployment in harsh environments.

We have three core business:

Aerospace and Defence

Supplying mission-critical technology for laser, sensing, and imaging applications under at a sea, on land, in the air, and in space. Our optical systems, components and assemblies are used in a broad range of offensive and defensive applications.

Industrial and Telecom

From laser pulse control for materials processing, to sensing and undersea communications, we have a reputation for producing photonics components and assemblies of the highest specification and quality.

Life Sciences and Biophotonics

Medical systems and instrumentation OEMs rely on us as a vertically integrated one stop resource for components, systems and assemblies. We provide solutions for medical imaging, surgical systems, critical care and laboratory applications.

Optical Manufacturing Capabilities

Our expertise centers on the four technologies:


Vertically integrated acousto-optics (AO) manufacturing begins with the growth of lithium niobate (LiNbO3) and tellurium dioxide (TeO2) crystals used in AO devices. We orientate, cut, shape and polish crystals before they can be coated. Transducers are wire bonded and devices are packaged. We design drivers suitable for each product range.


Our electro-optics (EO) manufacturing is also integrated. We grow our own crystal: Beta barium borate (BBO), Cadmium sulfide (CdS), Cadmium selenide (CdSe), Potassium dihydrogen phosphate (KDP), Potassium dideuterium phosphate (KD*P) and Tellurium dioxide (TeO2). Each material has different optical properties and we design and manufacture EO Pockel cells for a range of applications based on these. We also design and manufacture drivers to control and optimize Pockel cell performance for advanced laser systems.

Fiber Optics

We are renowned for our active and passive components and photonic modules. We are able to provide high performance space- and Telcordia-qualified products for use in all-fiber systems. Our expertise encompasses challenging areas such as manufacturing HI-REL fused components for under-sea and space deployment, working with challenging materials such as PCF or chalcogenide, and designing and testing low SWaP modules for use in rugged environments.

Precision Optics

We design and manufacture precision optics components and assemblies that few other companies can. Our planar, aspheric, prism and waveplate products are globally acclaimed. G&H precision PO capabilities cover a wide range of specialized manufacturing techniques from crystal growth, polishing including superpolishing, single point diamond turning, magneto optical finishing (MTF), segmented waveplates, anti-reflection, high reflection, and high laser damage threshold (HLDT) coatings, and adhesive free bonding. Furthermore aerospace and defense prime contractors rely on G&H to design and manufacture complex opto-mechanical assemblies.

For further details on our manufacturing capabilities, please visit the relevant pages: