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Bristol Instruments Inc.
770 Canning Pkwy.
Victor, NY 14564
United States
671 Series Laser Wavelength Meter
The 671 Series High-Accuracy Laser Wavelength Meter from Bristol Instruments is the best way to measure the absolute wavelength of CW lasers that operate from the visible to the mid-IR. This information is critical for applications such as high-resolution laser spectroscopy, photochemistry, cooling/trapping, and optical sensing. This system provides real-time laser wavelength information with an accuracy as high as ± 0.0001 nm. Continuous calibration with a built-in wavelength standard ensures the reliable accuracy that is needed, giving you greater confidence in your experimental results. A proven Michelson interferometer-based design is used to achieve an accuracy of ± 0.2 parts per million (± 0.0001 nm at 1000 nm) with the model 671A. For less demanding experiments, the model 671B is a lower-priced alternative with an accuracy of ± 0.75 parts per million (± 0.0008 nm at 1000 nm).
Several broad wavelength configurations are available to satisfy virtually any experimental requirement. These are the VIS (375-1100 nm), NIR (520-1700 nm), IR (1-5 µm), and MIR (1.5-12 µm). The laser under test enters the VIS and NIR versions of the 671 Laser Wavelength Meter through a pre-aligned fiber-optic input to ensure optimum alignment. Since fiber is not readily available for infrared wavelengths, the laser under test enters the IR and MIR systems through a free-space aperture, through which the internal HeNe reference laser is emitted as a visible tracer beam to facilitate alignment.
The 671 system operates with a Windows PC, via 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. A web-based application can also be used to display or collect measurement data with a tablet or smart phone from anywhere in the laboratory.
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