Quality Assurance

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

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Crystal Optics

G&H produces many different crystals from a variety of materials. We grow, orient, fabricate, finish, coat, and mount beta barium borate (BBO), cadmium sulfide (CdS), cadmium selenide (CdSe), potassium dihydrogen phosphate (KDP), potassium dideuterium phosphate (KD*P) and tellurium dioxide (TeO2) crystals in housings with apertures from 3 mm to larger than 300 mm.

We manufacture our crystals to work in optical components such as acousto-optic modulators, lithium niobate Mach-Zehnder modulators, Pockels cells, waveplates, and harmonic generating crystals. Large KDP and KD*P crystal plates grown, cut, and finished by G&H are used at The Commissariat à l'énergie atomique et aux énergies alternatives (CEA) and National Ignition Facility (NIF) for laser fusion.

G&H has extensive facilities for transmission and reflection interferometry, as well as contrast ratio measurements. We can measure insertion loss, uniformity of birefringence, and other important characteristics.  

Our experience growing Lithium Niobate dates back to 1967, producing the first commercially available material.  Since that time we have constantly refined the growth and material processing to be able to produce the highest quality, most consistent lithium niobate.   

Crystal Optic products

Lithium Niobate Wafers

LiNbO3 wafers can be double or single side polished. Congruent lithium niobate or with magnesium doping are available.

Periodically Poled Lithium Niobate

Periodically Poled LiNbO3, also known as PPLN, is produced un-doped or magnesium doped with a large number of poling patterns available.

Crystals and Nonlinear Optics

In addition to LiNbO3, G&H grows beta-barium Borate (BBO), Cadmium Selenide (CdSe), Cadmium Sulfide, (CdS), Potassium Di-hydrogen Phosphate (KDP), and Potassium Di-deuterium Phosphate (KD*P).

IR Waveplates

Cadmium Sulphide (CdS) and Cadmium Selenide (CdSe) waveplates are manufactured from original crystal growth to final product for wavelengths greater than 3µm. Very large, greater than 1 m, Di-Hydrogen Potassium Phosphate (KDP) waveplates are also available.

Space qualified

Many of our photonic solutions are qualified for space or are currently deployed. We understand how to develop, design, and manufacture for extremes of temperatures, radiation, shock, and vibration. We perform extensive qualification testing during engineering builds and flight hardware qualification.

ITAR compliant

We have extensive capabilities and experience supporting and managing the unique needs of government sponsored development programs. US customers can work with and source directly from a US-based supplier who can leverage capabilities and products across all worldwide divisions of G&H.

From prototypes to full-scale production

At G&H, we have the ability to produce single prototypes and the manufacturing capacity to make fiber optic components, assemblies and modules by the thousands. We can support your needs from commercial off-the-shelf products to customized complex solutions to meet your most demanding fiber optic requirements

Lithium Niobate Wafers

Congruent and MgO doped wafers for optical waveguide applications

No linear

Crystals and Nonlinear Optics

Crystals for nonlinear frequency conversion applications from the DUV to the FIR

Periodically Poled

Periodically-Poled Lithium Niobate

High efficiency quasi phase-matching for OPO, SHG and DFG applications