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SAPPHIRE OPTICAL PROBES

OPTICAL WINDOW PROBES

EnvirOptics hermetically sealed probes are designed and tested to perform under the harshest conditions including high and cryogenic temperatures as well as corrosive and abrasive atmospheres. High purity synthetic sapphire is the window material of choice for these probes because of its unique capabilities. Synthetic sapphire is capable of 80% to 90% optical transmission from UV through visible to infrared frequencies. Because of its superior mechanical strength to that of fused silica and glass a much thinner window can be produced that is mechanically durable in harsh environments. Sapphire has a coefficient of thermal expansion that allows it to be brazed to a variety of high performance and corrosion resistant metals. Sapphire is more chemically inert than glass or quartz and is not affected by acids, strong alkalis or organic solvents.

FEATURES AND BENEFITS

• Hermaticity-Hermetically sealed synthetic sapphire window exhibits a maximum leak rate of 1 X 10-⁹cc helium/second
• Mechanical Strength-Sapphire has burst strength many times greater than quartz or glass
• Thermal Characteristics-Operating range from +500ºC
  to -70ºC
• High Pressures-Pressures to 10,000 psi
• Chemically Inertness-Sapphire is more chemically inert than glass or quartz and is not affected by acids, strong alkalis or organic solvents
• Range of Frequency Transmission-Sapphire permits operation over a wide range of spectra from ultraviolet to infrared

MATERIALS AND SPECIFICATIONS

• Body/Flange Mount
  Hastelloy C
  316 Stainless
  Nickel
  Titanium
  Kovar
  

• Braze Material
  Gold Alloys
  Nickel Alloys
  Copper Alloys
  

• Mounting Configurations
  Resistance and high energy beam welding
  (laser and electron beam)
  Electrical resistance welding
  Mechanical Compression ferrule type
  Dynasco
  "O" ring
  "C" ring

EnvirOptics
2950 Advance Lane
Unit N
Colmar, PA 18915
USA Phone:(215) 996-1957 Fax:(215) 996-0666