Burleigh WA-20 Wavelength Meter for CW Lasers 0.4 to 4 µm

The Burleigh WA-20 Wavelength Meter provides automatic measurement of absolute wavelength for any continuous wave (CW) laser operating between 0.4 and 4 µm. The device updates the wavelength display every 1.6 seconds, facilitating laser tuning and drift monitoring. It measures vacuum wavelength throughout the 0.4 µm to 1 µm range with an accuracy of ±1 part in 10^6. Readout resolutions offer:

• High Resolution: 0.001 nm (visible) and 0.01 cm⁻¹ (infrared)
• Low Resolution: 0.01 nm

Specifications:

• Wavelength Range: 0.4–1.0 µm
• Readout Precision:
• High Resolution: 0.001 nm
• Low Resolution: 0.01 nm
• Accuracy (High Resolution, laser linewidth < 2 GHz):
• 0.4–1.0 µm: ±0.001 nm
• 1.0–4.0 µm: ±0.004 nm
• Accuracy (Low Resolution, laser linewidth < 20 GHz):
• 0.4–1.0 µm: ±0.01 nm
• 1.0–4.0 µm: ±0.01 nm

This model outperforms typical grating spectrometers in both accuracy and ease of use, requiring no external calibration reference within its operating wavelength range.