Photonic Microresonators from Charge Transfer in Polymer Particles: Toward Enhanced and Tunable Two-Photon Emission

2018 ◽  
Vol 10 (19) ◽  
pp. 16723-16730 ◽  
Author(s):  
Radhika Vattikunta ◽  
Dasari Venkatakrishnarao ◽  
Chakradhar Sahoo ◽  
Sri Ram Gopal Naraharisetty ◽  
Desai Narayana Rao ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Photon Emission ◽  
Polymer Particles ◽  
Two Photon

Charge transfer enhanced annihilation leading to deterministic single photon emission in rigid perylene end-capped polyphenylenes

2005 ◽  
pp. 4973 ◽  
Author(s):  
Toby D. M. Bell ◽  
Josemon Jacob ◽  
Maria Angeles-Izquierdo ◽  
Eduard Fron ◽  
Fabian Nolde ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission

FEASIBILITY OF THE TWO PHOTON EMISSION ATOMIC PHOSPHOR

1996 ◽  
Vol 80 (Appendix) ◽  
pp. 339-340
Author(s):  
Makoto Toho ◽  
Hideyoshi Kimura
Keyword(s):  
Photon Emission ◽  
Two Photon

Pulse amplification by stimulated two-photon emission

1970 ◽  
Vol 31 (5) ◽  
pp. 256-257 ◽  
Author(s):  
L.L. Hope ◽  
M.O. Vassell
Keyword(s):  
Photon Emission ◽  
Pulse Amplification ◽  
Two Photon

Two-photon emission spectrum of a two-level atom in an ideal cavity

1994 ◽  
Vol 49 (5) ◽  
pp. 4009-4015 ◽  
Author(s):  
Lin-sheng He ◽  
Xun-li Feng
Keyword(s):  
Emission Spectrum ◽  
Photon Emission ◽  
Two Photon ◽  
Level Atom

scholarly journals Tailoring and enhancing spontaneous two-photon emission using resonant plasmonic nanostructures

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
Alexander N. Poddubny ◽  
Pavel Ginzburg ◽  
Pavel A. Belov ◽  
Anatoly V. Zayats ◽  
Yuri S. Kivshar
Keyword(s):  
Photon Emission ◽  
Plasmonic Nanostructures ◽  
Two Photon

Novel A–(π–D–π–A)1–3 branched fluorophores displaying high two-photon absorption

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46853-46863 ◽  
Author(s):  
Zhi-Bin Cai ◽  
Hai-Min Shen ◽  
Mao Zhou ◽  
Sheng-Li Li ◽  
Yu-Peng Tian
Keyword(s):  
Charge Transfer ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
End Groups

Novel A–(π–D–π–A)3 compounds bearing pyridine end groups are apparently effective in achieving large two-photon responses owing to strong charge transfer.

scholarly journals Effect of phonon coupling on the cooperative two-photon emission from two quantum dots

2018 ◽  
Vol 98 (12) ◽  
Author(s):  
J. K. Verma ◽  
Harmanpreet Singh ◽  
P. K. Pathak
Keyword(s):  
Quantum Dots ◽  
Photon Emission ◽  
Phonon Coupling ◽  
Two Photon

scholarly journals Tuning of Hyperpolarizability, One- and Two-Photon Absorption of D-A and D-A-A Type Intramolecular Charge Transfer Based Sensors

2019 ◽  
Author(s):  
Pralok K. Samanta ◽  
Md Mehboob Alam ◽  
Ramprasad Misra ◽  
Swapan K. Pati
Keyword(s):  
Charge Transfer ◽  
Gas Phase ◽  
Density Functional ◽  
Intramolecular Charge Transfer ◽  
Photon Absorption ◽  
First Hyperpolarizability ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Nlo Response ◽  
Donor Acceptor

Solvents play an important role in shaping the intramolecular charge transfer (ICT) properties of π-conjugated molecules, which in turn can affect their one-photon absorption (OPA) and two-photon absorption (TPA) as well as the static (hyper)polarizabilities. Here, we study the effect of solvent and donor-acceptor arrangement on linear and nonlinear optical (NLO) response properties of two novel ICT-based fluorescent sensors, one consisting of hemicyanine and dimethylaniline as electron withdrawing and donating groups (molecule 1), respectively and its boron-dipyrromethene (BODIPY, molecule 2)-fused counterpart (molecule 3). Density functional theoretical (DFT) calculations using long-range corrected CAM-B3LYP and M06-2X functionals, suitable for studying properties of ICT molecules, are employed to calculate the desired properties. The dipole moment (µ) as well as the total first hyperpolarizability (β<sub>total</sub>) of the studied molecules in the gas phase is dominantly dictated by the component in the direction of charge transfer. The ratios of vector component of first hyperpolarizability (β<sub>vec</sub>) to β<sub>total</sub> also reveal unidirectional charge transfer process. The properties of the medium significantly affect the OPA, hyperpolarizability and TPA properties of the studied molecules. Time dependent DFT (TDDFT) calculations suggest interchanging between two lowest excited states of molecule 3 from the gas phase to salvation. The direction of charge polarization and dominant transitions among molecular orbitals involved in the OPA and TPA processes are studied. The results presented are expected to be useful in tuning the NLO response of many ICT-based chromophores, especially those with BODIPY acceptors.<br>

scholarly journals Quantum states of an electromagnetic field interacting with a classical current and their applications to radiation problems

2020 ◽  
Vol 27 (4) ◽  
pp. 902-911
Author(s):  
V. G. Bagrov ◽  
D. M. Gitman ◽  
A. A. Shishmarev ◽  
A. J. D. Farias
Keyword(s):  
Electromagnetic Field ◽  
Synchrotron Radiation ◽  
Dirac Equation ◽  
Photon Emission ◽  
Quantum States ◽  
Photon Radiation ◽  
Electric Currents ◽  
Scalar Particles ◽  
Two Photon ◽  
The Relationship

Synchrotron radiation was originally studied by classical methods using the Liénard–Wiechert potentials of electric currents. Subsequently, quantum corrections to the classical formulas were studied, considering the emission of photons arising from electronic transitions between spectral levels, described in terms of the Dirac equation. In this paper, an intermediate approach is considered, in which electric currents generating the radiation are considered classically while the quantum nature of the radiation is taken into account exactly. Such an approximate approach may be helpful in some cases; it allows one to study one-photon and multi-photon radiation without complicating calculations using corresponding solutions of the Dirac equation. Here, exact quantum states of an electromagnetic field interacting with classical currents are constructed and their properties studied. With their help, the probability of photon emission by classical currents is calculated and relatively simple formulas for one-photon and multi-photon radiation are obtained. Using the specific circular electric current, the corresponding synchrotron radiation is calculated. The relationship between the obtained results and those known before are discussed, for example with the Schott formula, with Schwinger calculations, with one-photon radiation of scalar particles due to transitions between Landau levels, and with some previous results of calculating two-photon synchrotron radiation.

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