Photofragmentation of colloidal solutions of gold nanoparticles under femtosecond laser pulses in IR and visible ranges
- P N Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
- A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
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. (extreme light fields and their applications)
- OSTI ID:
- 22551259
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 45, Issue 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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