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Bristol Instruments- 872 Series Laser Wavelength Meter

Precisely stabilize your laser’s wavelength

The 872 Series Laser Wavelength Meter builds upon our unique Fizeau etalon technology to provide a frequency resolution as high as 200 kHz. Therefore, the model 872 can detect very small wavelength deviations making it ideal for experiments where a laser’s frequency must be actively regulated.

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Fast, accurate, and reliable wavelength measurement

The 872 Laser Wavelength Meter measures the wavelength of both CW and pulsed lasers that operate from 375 to 1700 nm. The 872 system’s accuracy is ± 0.2 parts per million (± 60 MHz at 1000 nm) and its frequency resolution is better than 1 part per billion (300 kHz at 1000 nm). Automatic calibration with a built-in wavelength standard guarantees this performance to ensure the most meaningful experimental results.

The Fizeau etalons of the 872 Laser Wavelength Meter generate a spatial interferogram that is detected by a fast photodetector array. An on-board digital signal processor quickly converts the interferometric data to wavelength. Because this calculation is done within the instrument, a sustained measurement rate as high as 1 kHz is achieved.

 

Straightforward operation

The 872 Laser Wavelength Meter operates with a PC connected directly by USB or through a local area network via Ethernet. Software is provided to control measurement parameters and to report wavelength data.

The software also includes a proportional-integral-derivative (PID) controller. This feature compares the current wavelength measurement to a user defined set point to generate a corrective analog output voltage that can be used to stabilize a laser’s wavelength. This voltage is delivered through a BNC connector on the back panel of the 872 system.

  • Measurement resolution up to 200 kHz
  • Wavelength accuracy as high as ± 0.0001 nm
  • Automatic calibration with a built-in wavelength standard
  • Built-in PID controller for precise laser stabilization
  • Operation available from 375 to 1700 nm
  • Sustained measurement rate of 1 kHz
  • Convenient pre-aligned fiber-optic input
  • Straightforward operation via PC using USB or Ethernet
  • Automatic data reporting using custom or LabVIEW programming eliminates the need for a dedicated PC
  • Optional Fiber-Optic Switch accessory enables the characterization of up to 8 lasers with a single instrument
  • 5-year warranty covers all parts and labor