Lattice Materials LLC

Lattice Materials is a vertically integrated U.S. manufacturer of infrared optical components from hard, brittle materials for a wide variety of applications and industries. Since 1989, we have been the supplier of choice for top defense contractors, optical integrators, national labs, academic institutions, and semiconductor fabs. 

Our capabilities include:

• In-house custom silicon and germanium crystal growth
• Basic & CNC machining for optical blanks
• Precision optical curve generation
• High-precision polishing

Czochralski Crystal Growth
Custom silicon and germanium crystal growth is one of the most unique and important services that Lattice Materials provides. We can control:

• Electrical Resistivity
• Infrared Optical Transmission
• Monocrystalline Orientation
• Relief of Internal Stresses through Annealing

Silicon

• Monocrystalline:  Up to 14" Diameter
• Polycrystalline: Up to 15" Diameter

Germanium

• Monocrystalline: Up to 10" Diameter
• Polycrystalline: Up to 14" Diameter

Machined Products
Lattice Materials is recognized for machining extremely complex and challenging IR parts. We maintain several top-quality multi-axis CNC vertical mills that are dedicated to machining complex parts in either prototype or production quantities.

• Dimensions: Up to 17.5"
• Tolerances: Less than 0.0005"
• Surface Finish: 16 µin Ra or better

Precision Curved Silicon & Germanium
Our staff is the best in the world at machining precisely the ROC that your system requires with our precision CNC curve generators.

• Diameter: Up to 14.5"
• Surface Quality: Up to D7 Machined
• Polishing: Curve polishing available
• Sag Tolerance: +/- 1 micron
• Aspheres: Near net curve fit available

Polished Infrared Optics
Lattice Materials is equipped to polish and perform advanced metrology on polished IR optics. From lenses to mirrors, we can achieve exceptional levels of flatness, surface roughness, and surface quality.

Flat Polishing

• Diameter: Up to 17.5"
• Scratch/Dig: Better than 20/10
• Surface Roughness: Better than 15 Å rms
• Flatness: Better than 1/10th Wave

Spherical Curve Polishing

• Diameter: Up to 8"
• Scratch/Dig: Better than 20/10
• Surface Roughness: Please inquire
• Flatness: Better than 1/4 Wave