Lattice & TPC

516 E Tamarack St., Bozeman, MT 59715 |

Custom Grown & Machined Silicon & Germanium

Lattice Materials is the largest grower of optical silicon and germanium in the USA, and produces infrared optics, thin film coating sources and custom machined parts to extremely precise tolerances. With the installation of new Czochralski growth facilities in 2019, they can grow ingots up to 22” in diameter with virtually any orientation, optical transmission, and electrical resistivity. Polished blanks, windows, and spherical lenses are manufactured for defense and commercial applications.

Lattice Materials' manufacturing capabilities include basic machining for optical blanks, precision optical curve generation, high-precision polishing, and more. For more than 30 years, they have been the supplier of choice for top defense contractors, Tier 1 automotive suppliers, optical integrators, national laboratories, academic institutions, and semiconductor fabricators.

Lattice Materials Company Highlights

Products - Silicon & Germanium Parts

Custom Machined Optics: Optical Window Blanks, Plano Optics, Infrared Optics, Curved Lens 

High-Precision Polished Parts: Windows, Reflective Silicon Mirror Parts, Rough Blanks, Finished Coated Mirrors, Galvanometer Mirrors

Thin Film Sputtering Materials: Sputtering Targets, Multi-Target Configurations, Evaporation Sources

Semiconductor Manufacturing: Specialty Wafers, Rings, Gas Distribution, Wafer Handling Parts

Witness Samples: Ready-to-Ship or Custom, Flat or Wedge Witness Pieces

Materials: Silicon, Germanium


Domestic Crystal Growth

  • Silicon Czochralski Crystal Growth:
    • Monocrystalline: Over 12.5" Diameter
    • Polycrystalline: Over 14" Diameter
  • Germanium Czochralski Crystal Growth:
    • Monocrystalline: Over 4" Diameter
    • Polycrystalline: Over 4" Diameter

CNC Machining

  • Dimensions: Up to 17.5"
  • Tolerances: Less than 0.0005"
  • Surface Finish: Up to 16 Microns

Precision Optical Curve Generation

  • Diameter: Up to 14.5"
  • Surface Quality: Up to D7 Machined
  • Sag Tolerance: +/- 1 micron


  • Infrared & White Light Interferometry
  • X-Ray Crystallography
  • Polarometry

Industries Served

Defense / Aerospace

Automotive / Autonomous Driving

Semiconductor Manufacturing




ISO 9001:2015 Certified

ITAR Registered