Optical-Limiting Properties of Oleylamine-Capped Gold Nanoparticles for Both Femtosecond and Nanosecond Laser Pulses

2009 ◽  
Vol 1 (10) ◽  
pp. 2298-2303 ◽  
Author(s):  
Lakshminarayana Polavarapu ◽  
N. Venkatram ◽  
Wei Ji ◽  
Qing-Hua Xu
Keyword(s):  
Gold Nanoparticles ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses

Z-scan studies and optical limiting of nanosecond laser pulses in neutral red dye

2008 ◽  
Vol 40 (2) ◽  
pp. 373-378 ◽  
Author(s):  
Mathew George ◽  
C.I. Muneera ◽  
C.P. Singh ◽  
K.S. Bindra ◽  
S.M. Oak
Keyword(s):  
Laser Pulses ◽  
Optical Limiting ◽  
Neutral Red ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses ◽  
Red Dye

Optical limiting properties of BODIPY dyes substituted with styryl or vinylene groups on the nanosecond timescale

2019 ◽  
Vol 23 (07n08) ◽  
pp. 701-717 ◽  
Author(s):  
Nobuhle Ndebele ◽  
Zweli Hlatshwayo ◽  
Bokolombe P. Ngoy ◽  
Gugu Kubheka ◽  
John Mack ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Coefficient ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Nanosecond Laser ◽  
Third Order ◽  
The Third ◽  
Nanosecond Laser Pulses ◽  
532 Nm ◽  
Order Susceptibility

The results of recent studies on the optical limiting properties of BODIPY dyes at 532 and 1064 nm are described and compared. The optical limiting properties of novel 1,7-dimethyl-3,5-di-4-dihydroxyborylstyryl- and 3,5,7-tristyryl-1-methyl-BODIPY dyes were studied in CH2Cl2 and C6H6 and polystyrene thin films using the open aperture Z-scan technique at 532 nm with nanosecond laser pulses to provide an example of how the effective nonlinear absorption coefficient, the third order susceptibility, hyperpolarizability and limiting thresholds can be calculated.

PREPARATION OF GOLD NANOPARTICLES WITH NARROW SIZE DISTRIBUTIONS AND WELL DEFINED SHAPES

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2604-2609 ◽  
Author(s):  
FRANK HUBENTHAL ◽  
CHRISTIAN HENDRICH ◽  
HASSAN OUACHA ◽  
DAVID BLÁZQUEZ SÁNCHEZ ◽  
FRANK TRÄGER
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Axial Ratio ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Shape Distribution ◽  
Size And Shape ◽  
Nanosecond Laser Pulses

In this contribution, we present the results of recent experiments with the objective of tailoring the size and shape of gold nanoparticles with nanosecond laser pulses. The technique is based on the size and shape dependent surface plasmon resonance frequencies of metal nanoparticles. In our recent experiments gold nanoparticles were prepared by deposition of atoms on dielectric substrates followed by diffusion and nucleation. This usually results in ensembles of oblate nanoparticles with a broad size and shape distribution. Irradiating the gold particles during growth with nanosecond laser pulses makes it possible to produce nanoparticles with a predetermined axial ratio independent of size. For example, irradiating gold nanoparticles with a photon energy of 1.65 eV during growth stabilizes an axial ratio of a/b = 0.14, a being the short axis and b the long axis of the ellipsoidal nanoparticles. Furthermore, post-growth irradiation permits tailoring the average size of the nanoparticles by laser induced surface diffusion and evaporation of atoms. In principle, it is possible to eliminate all particles of undesired sizes by choosing the appropriate photon energies. We demonstrate that narrowing of the width of the surface plasmon resonance from initially 0.52 eV (half width at half maximum) to 0.2 eV is possible by using a single laser frequency. Combining both methods, i.e. laser irradiation during and after growth, finally results in a narrow size and shape distribution of the particles.

Non-Linear Light Scattering in a Two Component Medium Optical Limiting Application

1997 ◽  
Vol 479 ◽  
Author(s):  
V. Joudrier ◽  
J C. Fabre ◽  
P. Bourdon ◽  
F. Hache ◽  
C Flytzanis
Keyword(s):  
Light Scattering ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Spherical Particles ◽  
Nanosecond Laser ◽  
Two Component ◽  
Non Linear ◽  
Nanosecond Laser Pulses ◽  
532 Nm ◽  
Surrounding Liquid

AbstractThe first experimental investigation of an optical limiting device based on a suspension of spherical particles in a surrounding liquid is presented. The expected property is the non-linear light scattering based on a refractive index mismatch between the two components that appears at high intensity. Several experiments performed at 532 nm with nanosecond laser pulses provide good indication that such non-linear scattering is observed.

scholarly journals Optical Limiting and Stabilization Properties of a Liquid Dye on 1064 nm Nanosecond Laser Pulses

2013 ◽  
Vol 03 (02) ◽  
pp. 34-37 ◽  
Author(s):  
Liuheng Wang ◽  
Rongzong Peng ◽  
Yuxia Zhao ◽  
Feipeng Wu
Keyword(s):  
Laser Pulses ◽  
Optical Limiting ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses

scholarly journals Kinetics of molecular decomposition under irradiation of gold nanoparticles with nanosecond laser pulses—A 5-Bromouracil case study

2020 ◽  
Vol 152 (12) ◽  
pp. 124712 ◽  
Author(s):  
Telma S. Marques ◽  
Robin Schürmann ◽  
Kenny Ebel ◽  
Christian Heck ◽  
Małgorzata A. Śmiałek ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Molecular Decomposition ◽  
Nanosecond Laser Pulses ◽  
Kinetics Of

Optical Limiting Performance of ZnS Nanotube

2007 ◽  
Author(s):  
Qing Chang ◽  
Cun Chang ◽  
Hongan Ye ◽  
Yinglin Song
Keyword(s):  
Effective Medium Theory ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Effective Medium ◽  
Experimental Results ◽  
Nanosecond Laser ◽  
Medium Theory ◽  
Nanosecond Laser Pulses ◽  
532 Nm

Optical limiting (OL) performances of ZnS nanotube and ZnS nanoparticle in N, N dimethyllformaide (DMF) were comparatively investigated by using nanosecond laser pulses at 532 nm. Experimental results indicate that the shapes of ZnS nanomaterials have effect on their OL performances, and ZnS nanotube exhibits stronger OL performance than ZnS nanoparticle. The results were analyzed by use of the Maxwell-Garnett Effective Medium theory (MGT).

Optical limiting of semiconductor nanoparticles for nanosecond laser pulses

2004 ◽  
Vol 85 (26) ◽  
pp. 6326-6328 ◽  
Author(s):  
Wenling Jia ◽  
Elliot P. Douglas ◽  
Fenggi Guo ◽  
Wenfang Sun
Keyword(s):  
Laser Pulses ◽  
Optical Limiting ◽  
Semiconductor Nanoparticles ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses
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