Features

• Three AR Coating Options for One Side
  • -A: 350 - 700 nm
  • -B: 650 - 1050 nm
  • -C: 1050 - 1620 nm
• Indium Tin Oxide (ITO) Coating on Other Side
• Resistance Range: 50 - 80 Ω/sq (See Definition Below)
• N-BK7 Substrate

Thorlabs’ Conductive Windows are available with one of our three standard broadband antireflection coatings deposited on one surface, -A (350 - 700 nm) , -B (650 - 1050 nm), or -C (1050 - 1620 nm), and a conductive Indium Tin Oxide (ITO) coating on the other surface. ITO conductive glass windows can be used for EMI/RFI shielding or other electro-optical applications such as liquid crystals and solar cells. The ITO coating thickness was chosen to provide an excellent balance between the sheet resistance of 50 - 80 Ω/sq and optical performance. N-BK7 provides excellent transmission in the visible and near infrared portions of the spectrum.

Termination
Contact to the conductive surface can be made by copper tape, a silver epoxy-painted busbar, a silver-loaded silicone gasket, or a conductive fabric over foam gasket. Do not place wires directly in contact with the surface, or damage may result.

Sheet Resistance
The resistance of these conductive windows is given by:

R = R_s * (L/W)

Where L and W are the length and width of the window, respectively, and R_s is the sheet resistance. Sheet resistane is defined as ρ/t: the resistivity (Ω*m) divided by the thickness (m) of the conductive film. Under teh specific geometry of a square, where L = W, the resistance of the conductive windows is equal to the sheet resistance regardless of size. Under this special case, the sheet resistance is given in units of Ω/sq (Ohms per square).

Please contact Tech Support for more sizes, thicknesses, and wavelength options.