Optical limiting threshold in carbon suspensions and reverse saturable absorber materials

2001 ◽  
Vol 40 (36) ◽  
pp. 6646 ◽  
Author(s):  
Denis Vincent
Keyword(s):  
Saturable Absorber ◽  
Optical Limiting ◽  
Limiting Threshold ◽  
Reverse Saturable Absorber

THRESHOLD-TUNABLE OPTICAL LIMITERS OF Au NANOPARTICLES IN CASTOR OIL

2012 ◽  
Vol 21 (02) ◽  
pp. 1250024 ◽  
Author(s):  
HODA ALEALI ◽  
LEILA SARKHOSH ◽  
ROUHOLLAH KARIMZADEH ◽  
NASTARAN MANSOUR
Keyword(s):  
Gold Nanoparticle ◽  
Castor Oil ◽  
Nonlinear Refraction ◽  
Optical Limiting ◽  
Nanoparticle Concentration ◽  
Non Local ◽  
Set Up ◽  
532 Nm ◽  
Limiting Threshold ◽  
Good Agreement

Optical limiting performance of gold nanoparticles (AuNPs) in castor oil is studied using a low power laser irradiation at 532 nm. Our results suggest that it is possible to tune the optical limiting threshold of the AuNPs by modifying the parameters of the set-up and gold nanoparticle concentration of the colloids. The closed Z-scan measurements reveal that non-local thermal nonlinear refraction process is responsible for the limiting action of the colloids. We have investigated the Z-scan behavior of the samples based on the non-local thermal nonlinear refraction process without using photo-thermal thin lens approximation. It is shown that this model is in good agreement with the experimental results and large enhancement factors are measured for values of nonlinear thermal refractive index and thermo-optical coefficients of the colloids at higher gold nanoparticle concentration compared to the measurement of castor oil.

Optical Limiting in Solutions of Polycyclic Aromatic Hydrocarbon Diones.

1994 ◽  
Vol 374 ◽  
Author(s):  
L. V. Natarajan ◽  
R. L. Sutherland ◽  
D. McLean ◽  
M. Brant ◽  
D. M. Brandelik ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Optical Limiting ◽  
Threshold Values ◽  
Limiting Behavior ◽  
Polycyclic Aromatic ◽  
Excitation Laser ◽  
532 Nm ◽  
Limiting Threshold ◽  
Triplet Absorption

AbstractOptical limiting in toluene solutions of substituted benzanthracene- 3,4 diones and three other quinones, namely, benzpyrene-7,8-dione, benzphenanthrene-3,4-dione and chrysene-5,6-dione was investigated at laser wavelengths 532 nm and 694 nm. Low limiting threshold values of the order of 0.01J/cm2 were obtained for some of the quinones at 532nm. Strong triplet-triplet absorption at the excitation laser wavelengths may explain the optical limiting behavior.

Enhanced nonlinear absorption coefficient and low optical limiting threshold of NiO nanocomposite films

Optik ◽  
2021 ◽  
Vol 227 ◽  
pp. 165975
Author(s):  
Yasemin Pepe ◽  
Ahmet Karatay ◽  
Yusuf Osman Donar ◽  
Elif Akhuseyin Yildiz ◽  
Ali Sınağ ◽  
...  
Keyword(s):  
Absorption Coefficient ◽  
Nonlinear Absorption ◽  
Optical Limiting ◽  
Nonlinear Absorption Coefficient ◽  
Nanocomposite Films ◽  
Limiting Threshold

Dynamics of a laser with a reverse saturable absorber

1999 ◽  
Vol 68 (1) ◽  
pp. 39-44 ◽  
Author(s):  
M. Brunel ◽  
C. Özkul ◽  
F. Sanchez
Keyword(s):  
Saturable Absorber ◽  
Reverse Saturable Absorber

Green Synthesized Plasmonic Silver Systems for Potential Non-Linear Optical Applications: Optical Limiting and Dual Beam Mode Matched Thermal Lensing

2019 ◽  
Vol 72 (6) ◽  
pp. 460 ◽  
Author(s):  
Jeena Thomas ◽  
Prakash Perikaruppan ◽  
Vinoy Thomas ◽  
Jancy John ◽  
Raji Mary Mathew ◽  
...  
Keyword(s):  
Bioactive Compound ◽  
Optical Limiting ◽  
Thermal Lensing ◽  
Optical Parameters ◽  
Dual Beam ◽  
Optic Property ◽  
Non Linear ◽  
Linear Optical ◽  
Beam Mode ◽  
Limiting Threshold

Bioactive compound functionalized plasmonic systems are evolving as a promising branch of nanotechnology. In this communication the synthesis of bioactive compound mimosine-based silver nanoparticles (AgNPs) and their non-linear optical and thermo-optic properties are presented. UV-Visible spectroscopy, optical bandgap measurement, fluorescence spectroscopy, and high-resolution transmission electron microscopy (HRTEM) techniques were used to characterize the synthesized AgNPs. An open aperture z-scan technique was used to determine the non-linear optical parameters. A very strong reverse saturable absorption (RSA) and low optical limiting threshold were observed for the present mimosine decorated AgNP system. The thermo-optic property of the present system was evaluated using a highly sensitive dual beam mode matched thermal lensing spectroscopic technique. A comparison of the low limiting threshold (242MWcm−2) and thermo-optic property (thermal diffusivity, D=1.13×10−7m2s−1) with similar systems proves its capability for non-linear optical and thermo-optic applications.

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