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dc.contributor.authorBraidotti, Maria Chiara
dc.contributor.authorGentilini, Silvia
dc.contributor.authorFleming, Adam
dc.contributor.authorSamuels, Michiel Christiaan
dc.contributor.authorDi Falco, Andrea
dc.contributor.authorConti, Claudio
dc.identifier.citationBraidotti , M C , Gentilini , S , Fleming , A , Samuels , M C , Di Falco , A & Conti , C 2016 , ' Optothermal nonlinearity of silica aerogel ' Applied Physics Letters , vol. 109 , no. 4 , 041104 .
dc.identifier.otherPURE: 244177984
dc.identifier.otherPURE UUID: 29ba2c5d-8ca0-4ec9-ac69-a2fe5d13a292
dc.identifier.otherScopus: 84979970332
dc.identifier.otherORCID: /0000-0002-7338-8785/work/57821766
dc.descriptionThe authors acknowledge support from EPSRC (EP/J004200/1), the Templeton Foundation (grant number 58277) and the ERC project VANGUARD (grant number 664782).en
dc.description.abstractWe report on the characterization of silica aerogel thermal optical nonlinearity, obtained by z-scan technique. The results show that typical Silica Aerogels have nonlinear optical coefficient similar to that of glass (≃ 10-12m2/W), with negligible optical nonlinear absorption. The nonlinear coefficient can be increased to values in the range of 10-10m2/W by embedding an absorbing dye in the Aerogel. This value is one order of magnitude higher than that observed in the pure dye and in typical highly nonlinear materials like liquid crystals.
dc.relation.ispartofApplied Physics Lettersen
dc.rightsCopyright 2016 the Authors. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectQC Physicsen
dc.titleOptothermal nonlinearity of silica aerogelen
dc.typeJournal itemen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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