Name：Bristol 821

Product Overview The 821 series of pulsed laser wavemeters provide accurate information. Researchers need to know the exact wavelengths of CW lasers, pulsed lasers, and OPO wavelengths. The unique Fizeau interferometer-based design measures absolute wavelengths with an accuracy of up to ±0.02 cm⁻¹. A built-in wavelength standard is used for automatic calibration to ensure greater confidence in experimental results.