BROADBAND OPTICAL LIMITING USING TANDEM FILTERS WITH MULTIPHOTON ABSORBER AND REVERSE SATURABLE ABSORBERS

2000 ◽  
Vol 09 (04) ◽  
pp. 523-530 ◽  
Author(s):  
P. FENEYROU
Keyword(s):  
Optical Power ◽  
Optical Limiting ◽  
Experimental Results ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Nonlinear Transmission ◽  
Saturable Absorbers ◽  
Transient Spectroscopy ◽  
Limiting Efficiency ◽  
Optical Power Limiting

We report experimental results on a tin phthalocyanine: the nanosecond transient spectroscopy shows a reverse saturable absorption between 490–530 nm and 550–700 nm and the nonlinear transmission provides a better optical power limiting efficiency from 570 nm to 700 nm compared to C 60. This molecule is then combined in a tandem filter with a multiphoton absorber and a mixture of reverse saturable absorbers to achieve neutral-color broadband protection against ns pulses: the transmitted energy is clamped below 2 μ J throughout the visible.

scholarly journals Tunneling-induced optical limiting in quantum dot molecules

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mohadeseh Veisi ◽  
Seyedeh Hamideh Kazemi ◽  
Mohammad Mahmoudi
Keyword(s):  
Quantum Dot ◽  
Optical Power ◽  
Optical Limiting ◽  
Input Voltage ◽  
Optical Nonlinearity ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Absorption Mechanism ◽  
Probe Field ◽  
Limiting Behavior

Abstract We present a convenient way to obtain an optical power limiting behavior in a quantum dot molecule system, induced by an interdot tunneling. Also, the effect of system parameters on the limiting performance is investigated; interestingly, the tunneling rate can affect the limiting performance of the system so that the threshold of the limiting behavior can be a function of the input voltage, allowing the optimization of the limiting action. Furthermore, by investigating the absorption of the probe field, it is demonstrated that the optical limiting is due to a reverse saturable absorption mechanism; indeed, analytical results show that this mechanism is based on a cross-Kerr optical nonlinearity induced by the tunneling. Additionally, the limiting properties of the system are studied by using a Z-scan technique.

Energy transfer coupling of two-photon absorption and reverse saturable absorption for enhanced optical power limiting

1998 ◽  
Vol 23 (22) ◽  
pp. 1742 ◽  
Author(s):  
Mukesh P. Joshi ◽  
J. Swiatkiewicz ◽  
Faming Xu ◽  
Paras N. Prasad ◽  
B. A. Reinhardt ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Optical Power ◽  
Photon Absorption ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Optical Power Limiting

Design, Synthesis and Characterization of New Bimechanistic Optical Power Limiters Based on Reverse Saturable and Two-photon Absorption

1999 ◽  
Vol 597 ◽  
Author(s):  
C. W. Spangler ◽  
E. H. Elandaloussi ◽  
B. Ozer ◽  
K. Ashworth ◽  
L. Madrigal ◽  
...  
Keyword(s):  
Cross Sections ◽  
Excited State Absorption ◽  
Optical Power ◽  
Radical Cations ◽  
Optical Limiting ◽  
Photon Absorption ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Two Photon Absorption ◽  
Two Photon

AbstractDuring the past five years there has been considerable progress in the design of organic materials for optical power limiting (OPL) applications. One of the more promising and widely studied material approaches involves reverse saturable absorption (RSA) from various excited states. We have recently been examining the efficacy of utilizing highly absorbing photogenerated charge states for RSA. Both polaronic radical cations and bipolaronic dications are possible candidates for this mode of optical limiting. Equally intriguing are new approaches to designing chromophores with large two-photon absorption (TPA) cross-sections. For some pulse durations the effective two-photon cross-section for bis-(diphenylamino)diphenylpolyenes, and dendrimers based on these repeat units, are extraordinaryly large, indicative of excited state absorption. In this presentation we will discuss the possibility of combining these two optical limiting mechanistic paradigms in single structures, which may then be considered as bimechanistic optical power limiters.

Increasing the triplet lifetime and extending the ground-state absorption of biscyclometalated Ir(iii) complexes for reverse saturable absorption and photodynamic therapy applications

2016 ◽  
Vol 45 (41) ◽  
pp. 16366-16378 ◽  
Author(s):  
Chengzhe Wang ◽  
Levi Lystrom ◽  
Huimin Yin ◽  
Marc Hetu ◽  
Svetlana Kilina ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Ground State ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Ground State Absorption ◽  
Saturable Absorbers ◽  
Triplet Lifetime

Tuning the photophysics of cationic Ir(iii) complexes via π-expansive ligands dramatically impacts their applications as broadband reverse saturable absorbers and in photodynamic therapy and theranostics.

Reverse saturable absorption and optical limiting in indanthrone dyes

1996 ◽  
Vol 62 (3) ◽  
pp. 293-297 ◽  
Author(s):  
Rama Chari ◽  
S. R. Mishra ◽  
H. S. Rawat ◽  
S. M. Oak
Keyword(s):  
Optical Limiting ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption

Nanosecond reverse saturable absorption and optical limiting in (Me_4N)_2[Cd(dmit)(Sph)_2]

2001 ◽  
Vol 18 (10) ◽  
pp. 1464 ◽  
Author(s):  
Zhenrong Sun ◽  
Minghong Tong ◽  
Heping Zeng ◽  
Liangen Ding ◽  
Zugeng Wang ◽  
...  
Keyword(s):  
Optical Limiting ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption

Slipped-cofacial J-type phthalocyanine dimers as potential non-linear absorbers for optical limiting applications

2016 ◽  
Vol 40 (10) ◽  
pp. 8262-8270 ◽  
Author(s):  
Alexander Yu. Tolbin ◽  
Alexander V. Dzuban ◽  
Evgeny V. Shulishov ◽  
Larisa G. Tomilova ◽  
Nikolay S. Zefirov
Keyword(s):  
Self Assembly ◽  
Spectral Properties ◽  
Solid Phase ◽  
Optical Power ◽  
Optical Limiting ◽  
Non Linear ◽  
Optical Power Limiting

Phthalocyanine J-type dimers show unusual spectral properties and self-assembly in the solid phase. The optical power limiting effect was theoretically investigated.

The effects of extended π-conjugation in bipyridyl ligands on the tunable photophysics, triplet excited state and optical limiting properties of Pt(ii) naphthalimidyl acetylide complexes

2019 ◽  
Vol 48 (40) ◽  
pp. 15105-15113 ◽  
Author(s):  
Senqiang Zhu ◽  
Hao Liu ◽  
Kunyan Wang ◽  
Qian Cheng ◽  
Zhenxing Ma ◽  
...  
Keyword(s):  
Excited State ◽  
Optical Power ◽  
Optical Limiting ◽  
Triplet Excited State ◽  
Excited State Lifetimes ◽  
Optical Power Limiting

Pt(ii) complexes that exhibit long-lived triplet excited state lifetimes are promising for optical power limiting materials.

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