Cooperative effects to enhance two-photon absorption efficiency: intra- versus inter-molecular approach

2012 ◽  
Vol 14 (11) ◽  
pp. 3725 ◽  
Author(s):  
E. Collini
Keyword(s):  
Absorption Efficiency ◽  
Photon Absorption ◽  
Molecular Approach ◽  
Cooperative Effects ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Simultaneous Control of Emission Localization and Two-Photon Absorption Efficiency in Dissymmetrical Chromophores

2010 ◽  
Vol 114 (9) ◽  
pp. 3152-3169 ◽  
Author(s):  
Claudine Katan ◽  
Marina Charlot ◽  
Olivier Mongin ◽  
Céline Le Droumaguet ◽  
Viatcheslav Jouikov ◽  
...  
Keyword(s):  
Absorption Efficiency ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Simultaneous Control

scholarly journals How to optimize the absorption of two entangled photons

2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Edoardo Carnio ◽  
Andreas Buchleitner ◽  
Frank Schlawin
Keyword(s):  
Pulse Shaping ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Spatial Light Modulators ◽  
Schmidt Decomposition ◽  
Maximum Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Light Modulators ◽  
Down Conversion

We investigate how entanglement can enhance two-photon absorption in a three-level system. First, we employ the Schmidt decomposition to determine the entanglement properties of the optimal two-photon state to drive such a transition, and the maximum enhancement which can be achieved in comparison to the optimal classical pulse. We then adapt the optimization problem to realistic experimental constraints, where photon pairs from a down-conversion source are manipulated by local operations such as spatial light modulators. We derive optimal pulse shaping functions to enhance the absorption efficiency, and compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.

scholarly journals Red emissive AIE nanodots with high two-photon absorption efficiency at 1040 nm for deep-tissue in vivo imaging

2015 ◽  
Vol 6 (10) ◽  
pp. 3783 ◽  
Author(s):  
Yalun Wang ◽  
Rongrong Hu ◽  
Wang Xi ◽  
Fuhong Cai ◽  
Shaowei Wang ◽  
...  
Keyword(s):  
In Vivo Imaging ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Deep Tissue ◽  
Two Photon Absorption ◽  
Two Photon

Strong Enhancement of the Two Photon Absorption Cross Section of Porphyrin J-Aggregates in water

2004 ◽  
Vol 846 ◽  
Author(s):  
Elisabetta Collini ◽  
Camilla Ferrante ◽  
Renato Bozio
Keyword(s):  
Cross Section ◽  
Absorption Cross Section ◽  
Laser Pulses ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Cooperative Effects ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Strong Enhancement ◽  
The One

ABSTRACTStrong enhancement of the two photon absorption (TPA) cross section at 812 nm is observed for tetrakis(4-sulphonatophenyl)porphyrin diacid (H4TPPS2-) when a J-type aggregate is formed in water, in comparison to the one observed for the H4TPPS2- monomer in mixture of water, DMSO and urea. Open aperture Z-scan experiments, performed with ultra-short laser pulses, are employed to measure the TPA absorption cross section. The observed enhancement is discussed in terms of possible electronic cooperative effects in the aggregate.

Second order interference in two photon absorption

1996 ◽  
Vol 43 (9) ◽  
pp. 1765-1771 ◽  
Author(s):  
M. W. HAMILTON and D. S. ELLIOTT
Keyword(s):  
Second Order ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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