Pulsed Wavemeter® Wavelength Meter


Pulsed Wavemeter: provides the highest accuracy wavelength measurement of pulsed lasers or OPOs.

These systems determine the absolute wavelength of a test laser by using static Fizeau and Fabry-Perot etalons to generate spatial interference patterns that are compared to the patterns generated with a built-in HeNe laser wavelength standard. The WA-4550 Pulsed Wavemeter provides the highest accuracy measurement of ± 0.02 cm-1 over the wavelength range of 400 to 1100 nm.

The main features are:



400 - 1100 nm

Absolute Accuracy ± 0.02 cm-1
± 0.001 nm @ 700 nm
Display Resolution  
Fizeau Etalon 0.1 cm-1
0.01 nm
Fabry-Perot Etalon 0.01 cm-1
0.0001 nm
Spectral Resolution  
Fizeau Etalon 75 GHz
Fabry-Perot Etalon 1.5 GHz
Maximum Laser Bandwidth  
Fizeau Etalon 450 GHz
Fabry-Perot Etalon 9 GHz
Measurement Rate 20 Hz
Display Rate  
Wavelength Only > 5 Hz
Wavelength/Spectrum > 1 Hz
Minimum Input  
Energy 1 µJ
Power 10 µW


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