Raster Scan LIDT test

Non standard LIDT test
for determination of the worst case scenario

The raster scan technique is non-standard test. It helps to detect rare defects, which could be missed by applying standard S-on-1 test.

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Basics
Since the quality of the optical element rapidly increases, the raster scan testing becoming more and more popular option for laser damage characterization. During raster scan LIDT test the fluence handling capability of the sample is investigated by performing a sub-aperture multiple pulse raster scanning procedure. A selected area of the sample is divided into a number of sites with a diameter proportional to the laser beam’s diameter. Each site is exposed with a selected number of pulses at the investigated fluence value.

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Use this test for:

  • Characterization of the worst case scenario.
  • Optics with small defect densities (e. g. super polished samples).
  • Large aperture optics.

Be aware:
There are different raster scan application methods. Consult the providers before ordering.

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