Fastest Laser Wavelength Meter - 871 Series

16 Aug 2018

The 871 Laser Wavelength Meter from Bristol Instruments is the best way to measure the absolute wavelength of both pulsed and CW lasers. The model 871A Laser Wavelength Meter measures the absolute wavelength with a reliable accuracy as high as ± 0.2 parts per million, making it the ideal instrument for the most demanding applications.

The 871B system is a lower-priced alternative for less demanding experiments with an accuracy of ± 0.75 parts per million. Recent enhancements to the model 871B Laser Wavelength Meter now offer higher performance—including higher measurement rate, greater sensitivity, and better wavelength resolution.

This instrument uses a unique Fizeau etalon design to generate a spatial interferogram that is detected by a fast photodetector array. Using an on-board digital signal processor, the interferometric data is processed quickly into an accurate wavelength measurement. The combination of these technologies provides an unmatched, sustained measurement rate as high as 1 kHz. This enables the wavelength analysis of every single laser pulse of most lasers. What’s more, the system’s time resolution of 1 ms provides the most detailed characterization of tunable lasers and the fastest feedback for laser wavelength stabilization.

Accurate performance is maintained over long periods of time because the system is automatically calibrated with a built-in wavelength standard. The calibration process takes less than two seconds, and can be set to activate at a chosen time interval, or based on the system’s internal thermal conditions.

The 871 Laser Wavelength Meter is available in two broad wavelength configurations to satisfy most experimental requirements. These ranges are the VIS (375 - 1100 nm) and NIR (630 - 1700 nm). A pre-aligned fiber-optic input ensures optimum alignment resulting in uncompromised accuracy. The system operates with a PC running Windows, via a USB or Ethernet interface. Software is provided to control measurement parameters and to report data, or the system can become part of an experiment using a library of commands for custom or LabVIEW programming.

For more information visit: http://www.bristol-inst.com