Results 31 to 40 of about 174,035 (261)

Enhancement of Two-Photon Absorption in Boron-Dipyrromethene (BODIPY) Derivatives

Molecules, 2022
The linear and nonlinear optical properties of two BODIPY derivatives, 1,7-Diphenyl-3,5-bis(9,9-dimethyl-9H-fluoren-2-yl)-boron-diuoride-azadipyrromethene (ZL-61) and 1,7-Diphenyl-3,5-bis(4-(1,2,2-triphenylvinyl)phenyl)-boron-diuoride-azadipyrromethene ...
Guanzheng Song, Zhongguo Li, Yanbing Han, Jidong Jia, Wenfa Zhou, Xueru Zhang, Yuxiao Wang, Yinglin Song   +7 more
doaj   +1 more source

Ultrahigh speed all-optical demultiplexing based on two-photon absorption in a laser diode [PDF]

, 1998
The authors describe how the nonlinear process of two-photon absorption in a commercial laser diode may be used for all-optical demultiplexing in terabit per second optical time division multiplexing networks. Switching windows of 650 fs in duration have
Thomsen, Benn C., Barry, Liam P., Dudley, John M., Harvey, John D.   +3 more
core   +1 more source

All-optical pulse processing for advanced photonic communication system [PDF]

, 2008
This paper investigates the use of a two-photon absorption photodetector for high speed processing of ultrashort optical pulses in advanced photonic communication systems. Specifically the paper describes how the two-photon absorption photodetector maybe
Guo, Wei Hua, O\u27Dowd, John, K. J. Dexter, O'Dowd, John, Donegan, John Francis, W.H. Guo, A.L. Bradley, P.J. Maguire, Dexter, Karl J., Reid, Douglas A., Barry, Liam P., K. Bondarczuk, Bondarczuk, Krzysztof, Lynch, Michael, D.A. Reid, J. O'Dowd, J.F. Donegan, Bradley, Ann Louise, L.P. Barry, Maguire, Paul J., M. Lynch   +20 more
core   +1 more source

Degenerate and Non-Degenerate Two-Photon Absorption of Coumarin Dyes

, 2023
Two-photon absorption (2PA) spectroscopy is a robust bioimaging tool that depends on the determined cross sections (σ2PA). The absorption of both photons occurs simultaneously with equivalent (degenerate) or different (non-degenerate) photon energies, D ...
Ismael A., Elayan, Alex, Brown
core   +1 more source

Quantitative photoacoustic imaging of two-photon absorption [PDF]

Journal of Biomedical Optics, 2018
Two-photon absorption photoacoustic tomography (TP-PAT) is a recent hybrid imaging modality that aims at reconstructing two-photon absorption properties of heterogeneous media from measured ultrasound signals generated by the photoacoustic effect. While there have been extensive experimental studies in recent years to show the great promises of TP-PAT,
Bardsley, Patrick, Ren, Kui, Zhang, Rongting   +2 more
openaire   +3 more sources

Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

RSC Advances, 2020
The process of two-photon-induced isomerization occurring in various organic molecules, among which azobenzene derivatives hold a prominent position, offers a wide range of functionalities, which can be used in both material and life sciences.
Marta Dudek, Nina Tarnowicz-Staniak, Marco Deiana, Ziemowit Pokładek, Marek Samoć, Katarzyna Matczyszyn   +5 more
openaire   +3 more sources

Full Quantum Analysis of Two-Photon Absorption Using Two-Photon Wave Function: Comparison of Two-Photon Absorption with One-Photon Absorption [PDF]

Journal of the Physical Society of Japan, 2009
For dissipation-free photon–photon interaction at the single photon level, we analyze one-photon and two-photon transitions induced by photon pairs in three-level atoms using two-photon wave functions. We show that two-photon absorption can be substantially enhanced by adjusting the time correlation of photon pairs.
Nakanishi, Toshihiro, Kobayashi, Hirokazu, Sugiyama, Kazuhiko, Kitano, Masao   +3 more
openaire   +1 more source

Polymer Nanostructuring by Two-Photon Absorption [PDF]

, 2019
Two-photon polymerization (2PP) is an innovative technology that in recent years showed a tremendous potential for three-dimensional structuring of photopolymers at the submicron scale. It is based on the nonlinear absorption of ultrashort laser pulses in transparent photosensitive materials.
Zandrini, Tommaso, Suriano, Raffaella, De Marco, Carmela, Osellame, Roberto, Turri, Stefano, Bragheri, Francesca   +5 more
openaire   +4 more sources

Multi-photon fluorescence microscopy imaging of mitochondria in living cells excited by Yb-doped femtosecond fiber laser utilizing two- and three-photon competitive absorption

AIP Advances, 2020
By employing an Yb-doped femtosecond fiber laser oscillating at 1030 nm, multi-photon fluorescence microscopy imaging was demonstrated, utilizing competitive two- and three-photon absorption processes for excitation of the fluorescence probes ...
H. Moritomo, S. Onishi, Y. Makino, K. Matsumoto, Y. Suzuki, J. Kawamata   +5 more
doaj   +1 more source

Polarization-Entangled Two-Photon Absorption in Inhomogeneously Broadened Ensembles

Frontiers in Physics, 2022
Entangled photons are promising candidates for a variety of novel spectroscopic applications. In this paper, we simulate two-photon absorption (TPA) of entangled photons in a molecular ensemble with inhomogeneous broadening. We compare our results with a
Frank Schlawin, Frank Schlawin
doaj   +1 more source