Dependence of the optical limiting behavior on the medium position and the beam-waist radius in the refractive optical limiters

2006 ◽  
Author(s):  
Luogen Deng ◽  
Yuanyuan Chen ◽  
Xin Chen
Keyword(s):  
Optical Limiting ◽  
Beam Waist ◽  
Limiting Behavior ◽  
Optical Limiters ◽  
Waist Radius

Chitosan Gel Systems as Novel Host Materials for Optical Limiters

1997 ◽  
Vol 479 ◽  
Author(s):  
Hao Jiang ◽  
Weijie Su ◽  
Mark Brant ◽  
David Tomlin ◽  
Timothy J. Bunning
Keyword(s):  
Acetic Anhydride ◽  
Morphological Structure ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Laser Damage Threshold ◽  
Limiting Behavior ◽  
Optical Limiters ◽  
Host Materials ◽  
Chitosan Gel

AbstractTwo chitosan gel systems, chitosan/acetic anhydride and chitosan/glutaraldehyde, were studied as host materials for optical limiters. Both gels are transparent and have a very high laser damage threshold. The chitosan/acetic anhydride gel has a damage threshold > 540 J/cm2 while the chitosan/glutaraldehyde gel, which is slightly yellow in color, has a damage threshold > 600 J/cm2 (measurements made with 6.8 ns laser pulses at 532 nm). Different chromophore dopants, including porphyrin and CuPc, were tested. The optical limiting behavior of the guest/host gel systems was similar to their corresponding solution systems. The morphological structure of the gel systems was studied and the gelation process is discussed. Our current research explores the effect of gel morphology on the optical limiting properties of the chromophores and studies the relation between chromophores, cross-linking agents and the host materials. We have also investigated the relationship between optical properties and chemical structure of the gel/chromophore systems in order to optimize the optical behavior.

NANOMATERIALS AS OPTICAL LIMITERS

2000 ◽  
Vol 09 (04) ◽  
pp. 481-503 ◽  
Author(s):  
YA-PING SUN ◽  
JASON E. RIGGS ◽  
KEVIN B. HENBEST ◽  
ROBERT B. MARTIN
Keyword(s):  
Carbon Nanotubes ◽  
Nonlinear Absorption ◽  
Carbon Nanoparticles ◽  
Carbon Materials ◽  
Optical Limiting ◽  
Experimental Results ◽  
Nonlinear Scattering ◽  
Optical Limiters ◽  
Physico Chemical ◽  
Chemical States

Optical limiters based on several different classes of nanomaterials are reviewed. The systems under consideration include metal and semiconductor nanoparticles and nanoscale carbon materials. For the latter, the optical limiting properties of carbon nanoparticles, fullerenes, and suspended and solubilized carbon nanotubes are summarized and compared. Mechanistic implications of the available experimental results are discussed in terms of the comparison between nonlinear scattering versus nonlinear absorption as the dominating optical limiting mechanism for different nanomaterials and for different physico-chemical states of a nanomaterial.

Composition-dependent optical limiting behavior of all-inorganic halide perovskite quantum dots

2020 ◽  
Vol 110 ◽  
pp. 110521
Author(s):  
Wei Li ◽  
Tingting Wang ◽  
Chan Zheng ◽  
Liheng Guo ◽  
Wenzhe Chen
Keyword(s):  
Quantum Dots ◽  
Optical Limiting ◽  
Limiting Behavior ◽  
Perovskite Quantum Dots ◽  
Halide Perovskite

Electronic Structure and Optical Limiting Behavior of Carbon Nanotubes

1999 ◽  
Vol 82 (12) ◽  
pp. 2548-2551 ◽  
Author(s):  
P. Chen ◽  
X. Wu ◽  
X. Sun ◽  
J. Lin ◽  
W. Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Optical Limiting ◽  
Limiting Behavior

Investigation of Optical Limiting Mechanism in Multiwalled Carbon Nanotubes

1999 ◽  
Vol 597 ◽  
Author(s):  
X. Sun ◽  
Y. N. Xiong ◽  
P. Chen ◽  
J. Y. Lin ◽  
W. Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Multiwalled Carbon Nanotubes ◽  
Optical Limiting ◽  
Nonlinear Scattering ◽  
Multiwalled Carbon ◽  
Time Resolved ◽  
Pump Probe ◽  
Limiting Behavior ◽  
Energy Dependent

AbstractWe report an investigation into the mechanism responsible for the optical limiting behavior in multiwalled carbon nanotubes. We conducted energy-dependent transmission measurements, picosecond time-resolved pump-probe, and nonlinear scattering experiments at 532-nm wavelength on multiwalled carbon nanotube suspension. For comparison, C60-toluene solution and carbon black suspension were also studied in the same experiments. The similarities that we observed between the multiwalled carbon nanotubes and carbon black suspension suggest that nonlinear scattering, which is known to be responsible for the limiting action in carbon black suspension, should play an important role in the limiting effect in multiwalled carbon nanotubes.

OPTICAL LIMITING STUDIES IN PHOTOREFRACTIVE PURE AND IRON-DOPED Bi12SiO20 CRYSTALS

2000 ◽  
Vol 09 (02) ◽  
pp. 217-225 ◽  
Author(s):  
P. SREERAMANA AITHAL ◽  
P. PREM KIRAN ◽  
D. NARAYANA RAO
Keyword(s):  
Excited State Absorption ◽  
Optical Limiting ◽  
Photon Absorption ◽  
Limiting Behavior ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Iron Incorporation ◽  
Optical Limiter ◽  
Level Model

Optical limiting characteristics of pure and 150 ppm Fe-doped Bi 12 SiO 20 (BSO:Fe) crystals are studied at high intensity nanosecond pulse regime. When the input light is at 532 nm and at 595 nm with 6 ns pulse duration, a good optical limiting behavior is observed due to simultaneous effect of trap assisted excited state absorption and two photon absorption. The precise role of the internal defects due to impurity centers present in the crystal lattice is explained on the basis of a four level model. This study reveal that the increased nonlinear absorption due to iron incorporation in BSO makes it an excellent passive optical limiter.

Characterization and optical limiting behavior of BaSnO3 powder prepared by the conventional solid state method

2020 ◽  
Vol 29 ◽  
pp. 1091-1097
Author(s):  
Jibi John ◽  
S.R. Chalana ◽  
V.P. Mahadevan Pillai ◽  
Jaison Joseph ◽  
S. Muthunatesan ◽  
...  
Keyword(s):  
Solid State ◽  
Optical Limiting ◽  
Solid State Method ◽  
Limiting Behavior ◽  
Conventional Solid State Method ◽  
State Method
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