DataRay offers four ways of measuring Beam Divergence:
- Far Field (greater than four Rayleigh ranges from the source) - Use a BeamMap2 (with appropriate plane spacing) in divergence mode to measure divergence directly in real-time for beam divergences between 1 & 350 mrad (0.02° to 20°). Good for CW and very high rep rate pulsed lasers.
- Far Field (greater than four Rayleigh ranges from the source) - Use a single plane Beam Profiling Camera or Slit Scan Beam Profiler to measure beam diameter at a known distance Z from the source.
- Near Field - Use a BeamMap2 in M2 mode with the beam waist close to the zero plane.
- Near & Far Fields - See Gaussian Beam Divergence Measurement application note and its associated Excel spreadsheet. Use with an ancillary lens and appropriate Beam Profiling Camera or Slit Scan Beam Profiler.
See also M2 Beam Propogation Analysis, as this requires the simultaneous measurement of divergence and beamwaist diameter.
If you are unsure as to which is most suitable, Ask an Expert, or contact us directly.
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