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| A low-cost and compact alternative for laser wavelength measurement. | |
 | Product Features |
| » Absolute wavelength measured to an accuracy of ±10 ppm » Continuous calibration with a built-in reference » Operation available from 400 nm to 1.7 µm » Measurement rate of 10 Hz » Input power requirement as low as 5 µW » Convenient, pre-aligned fiber-optic input » Straightforward operation with PC using high-speed USB interface | |
| Product Overview | ||
| The 521 Series Laser Wavelength Meter is for scientists and engineers who need to know the absolute wavelength of their CW laser, but do not need to know it to the highest accuracy available. The model 521 is a unique system that couples accurate wavelength measurement and affordability in a compact instrument. As with the high-accuracy model 621, the 521 Laser Wavelength Meter uses Michelson interferometer-based technology to measure the absolute wavelength of virtually any CW laser to an accuracy of ±10 parts per million （±0.01 nm at 1000 nm）. The model 521 differs from the 621 system by using a Moiré scale as a built-in reference. This high-resolution scale provides the continuous calibration that is necessary to guarantee the accuracy of the wavelength measurement. Two versions of the model 521 are available to satisfy the needs of most experiments. The 521-VIS operates over the wavelength range of 400 to 1100 nm, and the 521-NIR has an operational wavelength range of 520 nm to 1.7 µm. The laser under test enters the 521 system through a convenient pre-aligned fiber-optic input to ensure optimum alignment. Instantaneous wavelength information is provided with a measurement rate of 10 Hz. The 521 Series Laser Wavelength Meter operates with a PC running under Windows 7, Vista, or XP. Wavelength is calculated and then transferred to the PC using a high-speed USB interface. Software for a simple display is provided to report data and control measurement parameters. |