Photofragmentation of colloidal solutions of gold nanoparticles under femtosecond laser pulses in IR and visible ranges. (31st May 2015)

• Record Type: Journal Article
• Authors: Danilov, P A; Zayarnyi, D A; Ionin, A A; Kudryashov, S I; Lednev, V N; Makarov, S V; Pershin, S M; Rudenko, A A; Saraeva, I N; Yurovskikh, V I
• Is Part Of: Quantum electronics. Volume 45:Number 5(2015)
• Page Start: 472
• Page End: 476
• Publication Date: 2015-05-31
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QE2015v045n05ABEH015760
• Languages: English
• ISSNs: 1063-7818

Abstract

<abstract xml:lang="en"> <title>Abstract</title> <p>The specific features of photofragmentation of sols of gold nanoparticles under focused femtosecond laser pulses in IR (1030 nm) and visible (515 nm) ranges is experimentally investigated. A high photofragmentation efficiency of nanoparticles in the waist of a pulsed laser beam in the visible range (at moderate radiation scattering) is demonstrated; this efficiency is related to the excitation of plasmon resonance in nanoparticles on the blue shoulder of its spectrum, in contrast to the regime of very weak photofragmentation in an IR-laser field of comparable intensity. Possible mechanisms of femtosecond laser photofragmentation of gold nanoparticles are discussed. </p> </abstract>