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Bristol 871 Series Laser Wavelength Meter

Home Products Laser Accessories Laser Diagnostics Bristol 871 Series Laser Wavelength Meter

Bristol 871 Series Laser Wavelength Meter

The fastest and most reliable method to measure the wavelength of pulsed and CW lasers

Bristol Instruments

The 871 Laser Wavelength Meter from Bristol Instruments is the best way to measure the absolute wavelength of both pulsed and CW lasers and OPO's. By combining proven Fizeau etalon technology with automatic calibration, the reliable accuracy needed for the most meaningful experimental results is ensured. What's more, a sustained measurement rate of 1 kHz enables the wavelength characterisation of every single pulse for most lasers. And, the resulting time resolution of 1ms provides the most detailed analysis of tunable lasers.


  • Operates with both pulsed and CW lasers
  • Wavelength measured to an accuracy as high as ± 0.2ppm (± 60MHz at 1000nm)
  • Automatic calibration with a built-in wavelength standard
  • Wavelength range options available from 375 to 1700nm
  • Asynchronous operation with automatic pulse detection
  • Minimum input as low as 20nJ (20µW at 1kHz)
  • Displays wavelength, wavenumber, or frequency
  • Pre-aligned fiber-optic input eliminates the need to manually optimise the interference signal
  • Straightforward operation with PC using high-speed USB or Ethernet interfaces
  • Web-based application available for tablet or smart phone display
  • Convenient table/smartphone application to report wavelength data anywhere in the laboratory
  • Automatic wavelength reporting using custom or LabVIEW programming eliminates the need for a dedicated PC

For further information please contact us or download the datasheet.


        871 Datasheet                                              Read more on Bristol's website