Three dimensional microstructuring of biopolymers by femtosecond laser irradiation

M. Oujja; S. Pérez; E. Fadeeva; J. Koch; B. N. Chichkov; M. Castillejo

doi:10.1063/1.3274127

Three dimensional microstructuring of biopolymers by femtosecond laser irradiation

M. Oujja^*
, S. Pérez
, E. Fadeeva
, J. Koch
, B. N. Chichkov
, M. Castillejo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

A sequence of single femtosecond pulses is used to create a pattern of laser affected spots at increasing depths below the surface of transparent biopolymer samples. Materials with different water contents and mechanical strengths, gelatine, chitosan, synthetic polyvinyl pyrrolidone, and biopolymer-polymer blends, are irradiated near the edge of the sample with an amplified Titanium:Sapphire laser (800 nm) delivering 30 fs pulses through a 0.45 numerical aperture objective with energies of 100-3000 nJ. The micrometric modified region is observed by optical microscopy perpendicularly to irradiation. Self-focusing and optical aberration are major factors controlling morphology and size of the created spots.

Original language	English
Article number	263703
Journal	Applied Physics Letters
Volume	95
Issue number	26
DOIs	https://doi.org/10.1063/1.3274127
Publication status	Published - 2009
Externally published	Yes

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10.1063/1.3274127

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abstract = "A sequence of single femtosecond pulses is used to create a pattern of laser affected spots at increasing depths below the surface of transparent biopolymer samples. Materials with different water contents and mechanical strengths, gelatine, chitosan, synthetic polyvinyl pyrrolidone, and biopolymer-polymer blends, are irradiated near the edge of the sample with an amplified Titanium:Sapphire laser (800 nm) delivering 30 fs pulses through a 0.45 numerical aperture objective with energies of 100-3000 nJ. The micrometric modified region is observed by optical microscopy perpendicularly to irradiation. Self-focusing and optical aberration are major factors controlling morphology and size of the created spots.",

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AU - Oujja, M.

AU - Pérez, S.

AU - Fadeeva, E.

AU - Koch, J.

AU - Chichkov, B. N.

AU - Castillejo, M.

PY - 2009

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AB - A sequence of single femtosecond pulses is used to create a pattern of laser affected spots at increasing depths below the surface of transparent biopolymer samples. Materials with different water contents and mechanical strengths, gelatine, chitosan, synthetic polyvinyl pyrrolidone, and biopolymer-polymer blends, are irradiated near the edge of the sample with an amplified Titanium:Sapphire laser (800 nm) delivering 30 fs pulses through a 0.45 numerical aperture objective with energies of 100-3000 nJ. The micrometric modified region is observed by optical microscopy perpendicularly to irradiation. Self-focusing and optical aberration are major factors controlling morphology and size of the created spots.

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VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Three dimensional microstructuring of biopolymers by femtosecond laser irradiation

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