SYMPOSIA PAPER Published: 01 January 1991
STP23657S

Damage to InAs Surface from Long Pulse 10.6μm Laser Radiation

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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.

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Details
Developed by Committee: F01
Pages: 536–540
DOI: 10.1520/STP23657S
ISBN-EB: 978-0-8031-5179-6
ISBN-13: 978-0-8194-0532-6