Picosecond and femtosecond laser ablation of hard tissues

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dc.contributor.author Serafetinides Alexander, A en
dc.contributor.author Makropoulou Mersini, I en
dc.contributor.author Kar Ajoy, K en
dc.contributor.author Khabbaz, Marouan en
dc.date.accessioned 2014-03-01T01:44:50Z
dc.date.available 2014-03-01T01:44:50Z
dc.date.issued 1996 en
dc.identifier.uri http://hdl.handle.net/123456789/24497
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0030354384&partnerID=40&md5=c80c290a10f074441bccd06c02446675 en
dc.subject.other Dentin en
dc.subject.other Femtosecond laser ablation en
dc.subject.other Hard dental tissue en
dc.subject.other Picosecond laser ablation en
dc.subject.other Second harmonic lasers en
dc.subject.other Thermal damage en
dc.subject.other Tunable dye amplifiers en
dc.subject.other Dentistry en
dc.subject.other Laser pulses en
dc.subject.other Radiation damage en
dc.subject.other Second harmonic generation en
dc.subject.other Laser ablation en
dc.title Picosecond and femtosecond laser ablation of hard tissues en
heal.type journalArticle en
heal.publicationDate 1996 en
heal.abstract In this study, the interaction of picosecond and femtosecond pulsed laser radiation with human dental tissue was investigated experimentally, as this unexplored field is expected to be a potential alternative in powerful laser processing of biomedical structures. Dentin ablation rate experiments were performed by using teeth sections of different thickness. Dental tissue samples were irradiated in air with i) a regenerative amplifier laser at 1064 nm, pulse duration 110 ps, ii) the second harmonic laser at 532 nm, pulse duration 100 ps, and iii) a picosecond tunable dye amplifier at 595 nm, pulse width 800 fs. In all the experiments the pulse repetition rate was 10 Hz. The ablation rate per pulse at different energy fluence settings was calculated by measuring the time needed for the perforation of the whole dental sample thickness. Short laser pulses can confine thermal energy within the optical zone, which maximizes photothermal and photomechanical mechanisms of interaction. Tissue ablation rates were found to be comparable to or better than other nanosecond lasers, and left smooth surfaces, free of thermal damage. en
heal.journalName Proceedings of SPIE - The International Society for Optical Engineering en
dc.identifier.volume 2922 en
dc.identifier.spage 200 en
dc.identifier.epage 208 en

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