Nonlinear UV damage mechanism in polymer thin films observed from below to above damage threshold

Semyon Papernov; D. Zaksas; Ansgar W. Schmid

doi:10.1117/12.307016

20 April 1998 Nonlinear UV damage mechanism in polymer thin films observed from below to above damage threshold

Semyon Papernov, D. Zaksas, Ansgar W. Schmid

Proceedings Volume 3244, Laser-Induced Damage in Optical Materials: 1997; (1998) https://doi.org/10.1117/12.307016
Event: Laser-Induced Damage in Optical Materials: 1997, 1997, Boulder, CO, United States

Abstract

In thin cellulose acetate films, 351-nm laser damage at subnanosecond pulse length can be demonstrated to be driven solely by a slow-buildup-time, transverse stimulated scattering process in which the transverse-scattered wave exhibits neither Raman nor Brillouin spectral shifts. Above threshold, the damage morphology exhibits an orientational selectivity that coincides with the scattered-wave orientation observable down to fluences 20 percent below the damage threshold. The physics of the scattering process remains to be identified.

Citation Download Citation

Semyon Papernov, D. Zaksas, and Ansgar W. Schmid "Nonlinear UV damage mechanism in polymer thin films observed from below to above damage threshold", Proc. SPIE 3244, Laser-Induced Damage in Optical Materials: 1997, (20 April 1998); https://doi.org/10.1117/12.307016

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