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Bristol 771 Series Laser Spectrum Analyser

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Bristol 771 Series Laser Spectrum Analyser

Bristol 771 Series Laser Spectrum Analyser

The most complete laser spectral characterisation from the visible to the mid-IR

Bristol Instruments


The 771 Series Laser Spectrum Analyser combines proven Michelson interferometer technology with fast Fourier transform analysis resulting in a unique instrument that operates as both a high-resolution spectrum analyser and a high accuracy wavelength meter. With spectral resolution up to 2GHz, wavelength accuracy as high as ± 0.0001nm, and an optical rejection ratio of more than 40dB, the model 771 provides the most detailed information about a laser's spectral properties.


The new 771 NIR2 adds a detection range of 1-2.6μm, with the convenience and consistent performance of a pre-aligned fibre-optic input coupling.



  • Wavelength measurement and spectral analysis with one instrument
  • Wavelength measured to an accuracy as high as ± 0.0001nm
  • Spectral resolution as high as 2GHz
  • Optical Rejection Ratio of > 40dB
  • Continuous calibration with a built-in wavelength standard
  • Wavelength range options available from 375nm to 12μm
  • Operation with CW and high-repetition rate pulsed lasers
  • Convenient pre-aligned fibre-optic input for visible and near-IR wavelengths
  • Free-space aperture with visible tracer beam for IR and mid-IR wavelengths
  • Sraightforward operation with PC using USB or Ethernet interfaces
  • Display software provided to control measurement parameters, display spectra and report wavelength data
  • Includes 5 year warranty

For further information please contact us or download the datasheet.


       771 datasheet                                                        Read more on Bristol's website