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G25 – 25mm Gold Integrating Spheres

  • Power handling: up to 10W (CW); up to 100W (CW) with suitable cold plate mounted
  • High power density: 5kW/cm²
  • Compatibility: OPM150 or OPM500 power meters via fibre coupling or photodiode port

Convection cooled gold spheres for mid power laser applications in the near to mid infrared (NIR and MIR) with good power handling capability

These convection cooled gold spheres are designed for mid power laser applications in the near to mid infrared (NIR and MIR). They provide good power handling capability up to 10W (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 100W (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 or via a photodiode port. Just plug it in to your USB port and start measuring!

  • Sphere inner diameter: 25mm
  • Standard 3 port design (fibre      and photodiode)
  • Power density: 5000W/cm²
  • Wavelength range: 650nm – 20µm

Ports:

  • SMA fibre
  • FC fibre
  • photodiode (Ge, InGaAs, IR enhanced InGaAs)

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