Published: Jan 1991
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Laser induced damage to InAs — the material of interest for use as a nonlinear medium for the dinamic holography, phase conjugation etc. at 10.6μm — was studied. Damage thresholds of InAs surfaces both bare and antireflectin coated have been measured for single pulses of 20μs duration and beam spot diameter ⩾/0.5cm. The dependence of thresholds on the surface preparation procedure was found. The performed investigations of damaged sites with help of optical and scanning electron microscopes and X-ray microprobe analiser made evident that the surface heating leaded to the damage. The role of surface absorption and reflectivity are exposed.
Lebedev Physics Institute, USSR Academi of Sciences, Moscow,
Paper ID: STP23657S