7 February 2006 Accelerated low fluence laser ageing of AR coatings
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Abstract
It is still assumed that optical components submitted to laser fluences orders of magnitude below their laser induced damage threshold (LIDT) will last for ever. However, depending upon environmental conditions, the accumulation of low fluence laser pulses leads to a progressive contamination and eventually to a damage of the optical components. In order to study the physics of the laser induceded contamination, a laser test bench has been developed. The experimental cell is dry-pumped and a mass spectrometer controls the environment around the optical component. An infrared camera diagnosis follows the sample surface temperature. This paper contains preliminary results obtained on anti-reflective coatings on fused silica tested at 532 nm with a pulse repetition rate of 10 kHz and a pulse width of 100 ns.
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S. Becker, A. Pereira, P. Bouchut, B. Andre, F. Geffraye, C Anglade, "Accelerated low fluence laser ageing of AR coatings", Proc. SPIE 5991, Laser-Induced Damage in Optical Materials: 2005, 59910M (7 February 2006); doi: 10.1117/12.638246; https://doi.org/10.1117/12.638246
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