GaAs :Low Absorption, High Resistance to Scratching and Abrasion.


Gallium Arsenide (GaAs) is nearly as hard , strong and dense as Ge. GaAs is particularly useful in applications where toughness and durability are important. It has a low absorption coefficient of 0.01 cm-1 from 2.5 to 12 um .


U-Optics is recognized as a leader in the fabrication of high precision infrared optics for surveillance, reconnaissance, and CO2 laser (transmission windows and lenses). Focusing on stringently-controlled fabrication processes that minimize surface damage, U-Optics provides high performance, cost-effective fabrication on GaAs products. Our quality assurance department provides testing and specific optics certification on request.


U-Optics offers typical available coatings for GaAs include a BBAR for 3 to 5μm spectral region, and a BBAR for the 8 to 12μm spectral region. Many other specialized bands are possible within the 2 to 15μm spectral region.



Key Figures
  • High transparency in IR spectral region.
  • Low absorption coefficient.
  • Light weight ,high durability, and relative strength.
  • Typically applied in thermal imaging, CO2 laser systems, FLIR.
  • High performance, cost-effective fabrication on GaAs products.
  • Proprietary fabrication technology to minimize subsurface damage.



Ø  GaAs Lenses

Ø  GaAs Prisms

Ø  GaAs Beamspliters

Ø  GaAs Wedges

Ø  GaAs Windows

Ø  Customs Optics




Ø  Clear Aperture                             90%

Ø  Dimensional Tolerance            +0.0/-0.1mm

Ø  Thickness Tolerance                 ±0.1mm

Ø  Center Thickness Tol.               ±0.2mm

Ø  Surface Quality                           40/10

Ø  Centering                                     3-5 arcminutes

Ø  Surface Accuracy                       1/10λ@10.6μm

Ø  Parallelism                                 <1 acrminute

Ø  Coating                                       3-12μm  AR,<5% per surface




Ø  Customs Optics

Ø  Contact U-optics Support & Serve