Study of damage in fused silica induced by ultra-short IR laser pulses

Abstract : We report on a new type of permanent damage obtained in bulk fused silica by focusing IR femtosecond laser pulses with microjoule energy. It consists of an uniaxial birefringence zone over a lateral size of a few microns and a depth of a few tens of microns. The birefringence zone is followed by sub-micrometer filamentary cracks extending up to 80 μm. Nonlinear pulse propagation plays a crucial role in the onset of this type of damage.
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Lionel Sudrie, Michel Franco, Bernard Prade, André Mysyrowicz. Study of damage in fused silica induced by ultra-short IR laser pulses. Optics Communications, Elsevier, 2001, 191 (3), pp.333-339. ⟨10.1016/S0030-4018(01)01152-X⟩. ⟨hal-00463712⟩

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