Laser Calibration Services

As well as calibrating our own instruments, we offer a Laser Calibration Service for instruments by other manufacturers.   These instruments might measure the mean laser power, pulsed laser energy, pulsed peak power, peak power density etc.   Calibrations are available for both CW lasers and pulsed lasers.   We can normally match your wavelength exactly for a CW calibration and fairly closely for a pulsed calibration.

Typically, we achieve a turn round time of 3 to 5 days.   However, it may be more for instruments from overseas because of the time for import/export bureaucracy.

Other calibrations we offer include:-

The list below gives a sample of our standard capabilities with a guideline cost.   We also do many special calibrations, so please enquire if the exact service you need is not listed.

Standard Calibrations
Instrument Type Measurement Typical Price
Calorimeter Broadband Pulsed Sensitivity to pulsed laser 400
Disc Thermopile Broadband CW power Sensitivity to total beam power or power density 320
Laser Power meter Broadband thermal Measure Sensitivity + Linearity of Detector + Linearity of Electronics 320-420
Laser Power meter Photo-diode type Sens. + Linearity + Spectral response 320-420
Photo-diode Large area type Sens. (pulsed or CW) + Spectral response 320-420
Pulsed Laser Energy Head Photo-diode or Pyro-electric Sensitivity at one or more λ. 400-550
Pulsed Laser Power Head Photo-diode Sensitivity at your λ. Power range from nW-W 450
Peak Power Measuring Head Photo-diode Sensitivity at your λ. Power range:- a few W 450
UV exposure meter (Eg ILC Light bug for UV Cured epoxies) 480
Laser Beam Profilers Pulsed and CW Sens. variations across array + absolute sensitivity 480
Amplifiers Measure gain, bandwidth and rise time up to 300MHz 320
Auto-collimators Measure and adjust optical axis to be within 50rad of mechanical axis. 350
Safety Goggles Measure Optical Density up to OD = 8. Most λ 350-450


Each Certificate gives details of:

  1. The calibration method and precautions taken.
  2. The Traceability and Absolute Accuracy of the calibration. Typically this is between 1.0% and 3.5% depending on the number of stages.
  3. Comments on the relevance of the calibration to the intended use of the Instrument.   For example a calibration might be done at low power CW when the end use is at high pulsed power.   In this case we would estimate the possible extra errors in changing the power level.
  4. Expiry of calibration.   Taking into account the type and design of Instrument, we suggest a sensible period for this particular calibration to remain valid - given normal Laboratory conditions and normal care.

      Please see the separate web page on how we achieve our claimed Calibration Accuracy for Peak Power Meters.


Our local standard of CW power is one of the Black Disc Thermopiles originally designed at NPL ( Preston and Edwards 1971 ) but now made by Laser Instrumentation Ltd in Farnham, UK.   It is a very stable and robust instrument which is used for all our calibrations of CW and pulsed systems.   Our Thermopile is recalibrated regularly by the NPL Radiometry team in Teddington, UK.   The NPL standard is overseen by the UK National Accreditation organisation ( UKAS ).