Please use this identifier to cite or link to this item: https://doi.org/10.1021/am900442u
Title: Optical-limiting properties of oleylamine-capped gold nanoparticles for both femtosecond and nanosecond laser pulses
Authors: Polavarapu, L. 
Venkatram, N. 
Ji, W. 
Xu, Q.-H. 
Keywords: femtosecond laser
gold nanoparticles
nonlinear optical properties
optical limiting
plasmon resonance
z-scan
Issue Date: 28-Oct-2009
Citation: Polavarapu, L., Venkatram, N., Ji, W., Xu, Q.-H. (2009-10-28). Optical-limiting properties of oleylamine-capped gold nanoparticles for both femtosecond and nanosecond laser pulses. ACS Applied Materials and Interfaces 1 (10) : 2298-2303. ScholarBank@NUS Repository. https://doi.org/10.1021/am900442u
Abstract: We report strong broad-band optical-limiting properties of oleylamine-capped gold nanoparticles in solution for both femtosecond and nanosecond laser pulses. The nanosecond optical-limiting effects were characterized by using fluence-dependent transmittance measurements with 7 ns laser pulses at 532 and 1064 nm, and the femtosecond optical-limiting effects were characterized with a z-scan technique using 300 fs laser pulses at 780 nm. The oleylamine-capped gold nanoparticles were found to show strong broad-band optical-limiting effects for nanosecond laser pulses at 532 and 1064 nm and femtosecond laser pulses at 780 nm. These oleylamine-capped gold nanoparticles displayed exceptional optical-limiting effects with thresholds lower than that of carbon nanotube suspension, a benchmark optical limiter. Input-fluence- and angle-dependent scattering measurements suggested that nonlinear scattering played an important role in the observed optical-limiting behavior at 532 and 1064 nm. © 2009 American Chemical Society.
Source Title: ACS Applied Materials and Interfaces
URI: http://scholarbank.nus.edu.sg/handle/10635/76681
ISSN: 19448244
DOI: 10.1021/am900442u
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