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.
Accessories
Stabilize the frequency of up to 8 lasers connected to the model 872.
Connect up to eight lasers to the model 872 with our fiber-optic switches.
Choose from a selection of convenient accessories for operation with optical fiber.