SYMPOSIA PAPER Published: 01 January 1988

Long-Range Pulselength Scaling of 351 nm Laser Damage Thresholds


In a series of experiments incorporating 351-nm pulselengths of 9, 26, 54, and 625 ns, it was found that laser damage thresholds increased as (pulselength)X, and that the exponent averaged 0.36 and ranged, for different samples, from 0.23 to 0.48. Similar results were obtained when only catastrophic damage was considered. Samples included Al2O3/SiO2 in both AR and HR multilayers, HR's of Sc2O3/SiO2 and HfO2/SiO2, and an Al-on-pyrex mirror; 9-ns thresholds were between 0.2-5.6 J/cm2.

When these data were compared with a wide range of other results — for wavelengths from 0.25 to 10.6 μm and pulselengths down to 4 ps — a remarkably consistent picture emerged. Damage thresholds, on average, increase approximately as the cube-root of pulselength from picoseconds to nearly a microsecond, and do so regardless of wavelength or material under test.

Author Information

Foltyn, SR
Jolin, LJ
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: F01
Pages: 336–343
DOI: 10.1520/STP18572S
ISBN-EB: 978-0-8031-5032-4
ISBN-13: 978-0-8031-4477-4