Programmable focal spot shaping of amplified femtosecond laser pulses and their application to micromachining

Abstract : We present programmable focal spot shaping of amplified femtosecond laser pulses by use of an optically addressed non-pixellated liquid crystal light valve. This extra-cavity phase filtering method is set-up in the frame of femtosecond micromachining processes. Various focal spot shapes are demonstrated together with drilling and marking results in metals and dielectrics. Photowriting of waveguides in bulk fused silica is also presented.
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https://hal-ujm.archives-ouvertes.fr/ujm-00118206
Contributor : Nicolas Huot <>
Submitted on : Monday, December 4, 2006 - 1:58:39 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:30 PM

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Nicolas Huot, Nicolas Sanner, Eric Audouard. Programmable focal spot shaping of amplified femtosecond laser pulses and their application to micromachining. SPIE Proceedings Series, 2006, pp.6400-15. ⟨ujm-00118206⟩

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