More confidence in your experimental results
The 671 Series Laser Wavelength Meter uses proven Michelson interferometer-based technology to accurately measure the wavelength of CW lasers that operate from 375 nm to 12 μm.
The model 671A is the most precise, measuring wavelength to an accuracy of ± 0.2 parts per million (± 0.0001 nm at 500 nm). For experiments that are less exacting, the model 671B is a lower-priced alternative with an accuracy of ± 0.75 parts per million (± 0.001 nm at 1500 nm).
Guaranteed accuracy with continuous calibration
To achieve the reliable accuracy needed for the most demanding applications, the 671 Laser Wavelength Meter is continuously calibrated with a built-in HeNe laser. This is the ideal reference source because its wavelength is well-known and fixed by fundamental atomic structure.
To achieve the highest accuracy, the model 671A uses a single-frequency HeNe laser that is stabilized using a balanced longitudinal mode technique. The model 671B uses a standard HeNe laser as the wavelength reference.
The 671 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.
Since wavelength is calculated using an on-board digital signal processor, the 671 Laser Wavelength Meter can be integrated directly into an experiment using a library of commands for custom or LabVIEW programming. This eliminates the need for a dedicated PC and enables the use of any operating system.
What’s more, a browser-based application can be used with a tablet or smartphone to display laser wavelength information anywhere in the laboratory.
Choose from a selection of convenient accessories for operation with optical fiber.
Connect up to eight lasers to the model 671 with our range of fiber-optic switches.