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G65 – 65mm Gold Integrating Spheres

Convection cooled gold integrating spheres for high power laser applications in the near to mid infrared (NIR and MIR) with good power handling capability up to 40W (CW)

These convection cooled gold integrating spheres are designed for high power laser applications in the near to mid infrared (NIR and MIR). They provide good power handling capability up to 40W (CW). The back plate of the sphere is lapped and coated for mounting to liquid or forced air cooled cold plates. With a suitable cold plate, the sphere can withstand up to 400W (CW) power.

High power measurements are often performed using thermopile detectors. Thermopiles however, have the disadvantage of reacting very slowly – typical rise times lead to measurement periods of 1 second at best. The combination of an integrating sphere and a photodiode based power meter opens the possibility of measuring high power fluctuations on a µs time scale. This can be useful for setting up and debugging high power CW lasers.

These spheres may be combined with our OPM150 or OPM500 series of power meters via fibre coupling. Just plug it in to your USB port and start measuring!

  • Sphere inner diameter: 65mm
  • Input port diameter: 15mm
  • SMA or FC fibre ports
  • Standard 2 port design (eg:      power and spectrometer); 4 ports on request
  • Power density: 5000W/cm²
  • Wavelength range: 650nm – 20µm
  • Ports: SMA or FC fibre
  • Number of ports: 2 or 4

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