Results 21 to 30 of about 174,035 (261)

Two-photon-absorption-based OSNR monitor for NRZ-PSK transmission systems [PDF]

, 2010
A two-photon absorption microcavity-based technique for monitoring in-band optical signal-to-noise ratio (OSNR) in nonreturn-to-zero phase-shift-keying systems is presented.
Guo, Wei Hua, Reid, Douglas A., Anandarajah, Prince M., Barry, Liam P., O'Dowd, John, Bondarczuk, Krzysztof, Lynch, Michael, Donegan, John Francis, Shi, Kai, Bradley, Ann Louise, Dexter, Karl J.   +10 more
core   +1 more source

Colors of entangled two-photon absorption

Proceedings of the National Academy of Sciences, 2023
Multiphoton absorption of entangled photons offers ways for obtaining unique information about chemical and biological processes. Measurements with entangled photons may enable sensing biological signatures with high selectivity and at very low light levels to protect against photodamage.
Oleg Varnavski, Sajal Kumar Giri, Tse-Min Chiang, Charles J. Zeman, George C. Schatz, Theodore Goodson   +5 more
openaire   +2 more sources

Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory

Applied Sciences, 2014
In this review, recent advances in two-photon absorbing photochromic molecules, as potential materials for 3D optical memory, are presented. The investigations introduced in this review indicate that 3D data storage processing at the molecular level is ...
Kazuya Ogawa
doaj   +1 more source

Fluorescence Anisotropy in Radachlorin and Chlorin e6 in Water–Methanol Solutions under One- and Two-Photon Excitation

Photonics, 2022
The fluorescence anisotropy of photosensitizers Radachlorin and chlorin e6 was studied using the time-resolved single photon-counting technique under one- and two-photon excitation within the Soret absorption band.
Ioanna A. Gorbunova, Maxim E. Sasin, Anna A. Zhikhoreva, Andrey V. Belashov, Dina M. Beltukova, Irina V. Semenova, Oleg S. Vasyutinskii   +6 more
doaj   +1 more source

Optical signal processing via two-photon absorption in a semiconductor microcavity for the next generation of high-speed optical communications network [PDF]

, 2006
Due to the introduction of new broadband services, individual line data rates are expected to exceed 100 Gb/s in the near future. To operate at these high speeds, new optical signal processing techniques will have to be developed.
Guo, Wei Hua, O\u27Dowd, John, Krug, T., O'Dowd, John, Bradley, L., Donegan, John Francis, Folliot, Hervé, Maguire, P.J., O'Dowd, J., Guo, W.H., Donegan, J., Folliot, H., Lynch, M., Barry, Liam P., Lynch, Michael, Bradley, Ann Louise, Maguire, Paul J., Barry, Liam, P.   +17 more
core   +1 more source

Spatial Properties of Entangled Two-Photon Absorption

Physical Review Letters, 2022
We experimentally study entangled two-photon absorption in Rhodamine 6G as a function of the spatial properties of a high flux of broadband entangled photon pairs. We first demonstrate a key signature dependence of the entangled two-photon absorption rate on the type of entangled pair flux attenuation: linear, when the laser pump power is attenuated ...
Tabakaev, Dmitry, Djorovic, Aleksa, La Volpe, Luca, Gaulier, Geoffrey, Ghosh, Shayantani, Bonacina, Luigi, Wolf, Jean-Pierre, Zbinden, Hugo, Thew, Rob   +8 more
openaire   +3 more sources

Line-Shaped Illumination: A Promising Configuration for a Flexible Two-Photon Microscopy Setup

Applied Sciences, 2022
An innovative two-photon microscope exploiting a line-shaped illumination has been recently devised and then implemented. Such configuration allows to carry out a real-time detection by means of standard CCD cameras and is able to maintain the same ...
Jacopo Parravicini, Elton Hasani, Luca Tartara   +2 more
doaj   +1 more source

Nonlinear optical thresholding in a 4-Channel OCDMA system via two-photon absorption [PDF]

, 2009
We demonstrate the use of a Two-Photon Absorption based detector in an OCDMA system.
K. J. Dexter, Petropoulos, P., Richardson, D.J., Dexter, Karl J., Reid, Douglas A., Reid, D.A., Barry, Liam P., Dexter, K.J., D. J. Richardson, Barry, L.P., D. A. Reid, L. P. Barry, P. Petropoulos   +12 more
core   +1 more source

Two-Photon Absorption of Nonclassical Light [PDF]

Physical Review Letters, 1989
Two-photon absorption of light with nonclassical (squeezed) fluctuations is considered. Several unique effects are predicted for various possible regimes. These include a linear (instead of quadratic) growth of the absorption rate with the light intensity for weak fields, the possibility of a decreasing absorption with increasing intensity, and orders ...
openaire   +3 more sources

Expanding the range of chromatic dispersion monitoring with two-photon absorption in semiconductors [PDF]

, 2007
Chromatic dispersion monitoring based on two-photon absorption (TPA) in semiconductors is very attractive because it does not need any high speed electronic devices (Inui, 2002).
Guo, Wei Hua, Barry, Liam P., W. H. Guo, Donegan, John Francis, J. F Donegan, L. P. Barry   +5 more
core   +1 more source