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BATOP Logo Small gold mirrors on GaAs

Broadband gold mirrors

If very small broadband mirrors with dimensions of only a few millimeters are needed then gold coated GaAs chips are appropriate. A single crystalline GaAs wafer as substrate for a reflecting gold layer has a very smooth surface and a good thermal conductivity of 55 W/(m*K). It can be cutted into small quadratic or rectangular chips.
Gold mirrors can be used as broadband reflectors for wavelengths > 800 nm. The reflectance increases continuously with increasing wavelength.

We provide unmounted gold mirrors with a standard substrate thickness of 450 µm

Available chip areas:
  • 4.0 mm x 4.0 mm
  • 2.0 mm x 2.0 mm
  • 1.3 mm x 1.3 mm
  • custom dimensions on request
Gold mirrors from stock

Au-M-4x4


• Thin gold film on single crystalline GaAs
• Chip area: 4 mm x 4 mm
• Chip thickness: 450 µm
Data sheet (pdf)
Quote request
• Price: 70.- €/pc

Au-M-2x2


• Thin gold film on single crystalline GaAs
• Chip area: 2 mm x 2 mm
• Chip thickness: 450 µm
Data sheet (pdf)
Quote request
• Price: 60.- €/pc

Au-M-1.3x1.3


• Thin gold film on single crystalline GaAs
• Chip area: 1.3 mm x 1.3 mm
• Chip thickness: 450 µm
Data sheet (pdf)
Quote request
• Price: 50.- €/pc

Au mirror