Programmable spatial beam shaping of a 100 kHz amplified femtosecond laser

Programmable spatial beam shaping of a 100 kHz amplified femtosecond laser

We present programmable spatial beam-shaping of 100-kHz, 4-µJ amplified femtosecond pulses in a focal plane using wavefront modulation. Phase distributions are determined by a numerical iterative procedure. A non-pixelated optically-addressed liquid crystal light valve is used as a programmable wave...

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Veröffentlicht in:Optics letters 2005, Vol.30 (12), p.1479-1481
Hauptverfasser: Sanner, Nicolas, Huot, Nicolas, Audouard, Eric, Larat, Christian, Huignard, Jean-Pierre, Loiseaux, Brigitte
Format: Artikel
Sprache:eng
Schlagworte:
Optics
Physics
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Beschreibung
Zusammenfassung:We present programmable spatial beam-shaping of 100-kHz, 4-µJ amplified femtosecond pulses in a focal plane using wavefront modulation. Phase distributions are determined by a numerical iterative procedure. A non-pixelated optically-addressed liquid crystal light valve is used as a programmable wavefront tayloring device. Top-hat, doughnut, square and triangle shapes with a 20-Μm size are obtained in a focal plane. The suitability for femtosecond laser machining is demonstrated.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.30.001479