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871 Series Laser Wavelength Meter

Fast, accurate, and  reliable wavelength measurement for pulsed and CW lasers


High wavelength accuracy

The 871 Laser Wavelength Meter uses a proven Fizeau etalon design to measure the wavelength of pulsed and CW lasers to an accuracy as high as ± 0.2 parts per million (± 0.0002 nm at 1000 nm). Automatic calibration with a built-in wavelength standard guarantees this performance to ensure the most meaningful experimental results.

Fastest sustained measurement rate

The 871 Laser Wavelength Meter generates a spatial interferogram that is detected by a fast photodetector array. An on-board digital signal processor quickly converts the interferometric information to wavelength. Because this calculation is done internally, a sustained measurement rate as high as 1 kHz is achieved.

Wavelength measurements can be reported at this rate by data streaming with an RS-422 serial interface, or an internal data buffer is available to save up to one million measurements.

Convenient laser input and straightforward operation

A laser under test enters the 871 Laser Wavelength Meter through a pre-aligned fiber-optic input connector. This ensures optimum alignment of the laser beam to the system’s Fizeau etalons resulting in uncompromised accuracy.

The 871 Laser Wavelength Meter operates with a PC connected directly by USB or though a local area network via Ethernet. Software is provided to control measurement parameters and to report wavelength data, or the system can be integrated directly into an experiment using a library of commands for custom or LabVIEW programming. In addition, a browser-based application can be used with a tablet or smartphone to display laser wavelength information anywhere in the laboratory.

  • Wavelength accuracy as high as ± 0.0001 nm
  • Automatic calibration with built-in wavelength standard
  • Operation available from 375 nm to 2.5 μm
  • Sustained measurement rate of 1 kHz
  • Convenient pre-aligned fiber-optic input
  • Straightforward operation with PC using
    USB or Ethernet
  • Display software provided to control measurement parameters and report
    wavelength data
  • Built-in PID controller for precise laser stabilization
  • Automatic data reporting using custom or LabVIEW programming eliminates the need for a dedicated PC
  • Convenient tablet/smartphone application reports measurement data anywhere in the laboratory
  • Includes 5 year warranty

Choose from a selection of convenient accessories for operation with optical fiber.

Connect up to eight lasers to the model 871 with our fiber-optic switches.