Abstract
For conventional metallic samples, agreement between experimental damage thresholds and three theoretical thresholds—for melting m, vaporizing ν, and heating to 2 eV—is fair (factor of ∼ 2 to ∼ 10). The previous scaling is valid in general, but is valid for (I tp)m, (I tp)ν, and (I tp)2eV individually. Silver has the greatest theoretical threshold and figure of merit at 1.06 μm, but silver, copper, and gold have approximately equal figures of merit at 10.6 μm. Some clustering mechanism probably is involved in the isolated-spot damage observed in conventional samples.
© 1979 Optical Society of America
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