Results 31 to 40 of about 20,087,803 (245)

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   +2 more sources

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   +2 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

Experimental Comparison of the Single-Event Effects of Single-Photon and Two-Photon Absorption under a Pulsed Laser

Applied Sciences, 2022
The pulsed laser has gradually become the standard method of studying the single-event effects of micro-nano devices, and it is a powerful supplement to heavy ion experiments on single-event effects.
Heng An, Detian Li, Xuan Wen, Shengsheng Yang, Chenguang Zhang, Jun Wang, Zhou Cao   +6 more
doaj   +1 more source

Measurement of transient strain induced by two-photon excitation

Physical Review Research, 2020
By ultrafast x-ray diffraction we quantify the strain from coherent and incoherent phonons generated by one- and two-photon absorption. We investigated the ferrimagnetic insulator bismuth-doped yttrium iron garnet, which is a workhorse for laser-induced ...
S. P. Zeuschner, J.-E. Pudell, A. von Reppert, M. Deb, E. Popova, N. Keller, M. Rössle, M. Herzog, M. Bargheer   +8 more
doaj   +1 more source

Two‐Photon Absorption in Perovskite Semiconductors

Advanced Physics Research
Perovskite semiconductors have emerged as promising materials for nonlinear photonic, optoelectronic, and energy‐conversion applications, yet a predictive theory of two‐photon absorption (TPA) in these materials remains incomplete.
David Ompong, Michael Edem Donkor, Emmanuel Ofosu, Daniel Dodzi Yao Setsoafia, Hooman Mehdizadeh‐Rad, Kiran Sreedhar Ram, Jai Singh   +6 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Two-photon absorption of Tl1-xIn1-xSnxSe2 nanocrystallites

EPJ Web of Conferences, 2017
Novel materials for the infrared two-photon absorption — Tl1-xIn1-xSnxSe2 single crystals (x = 0.1,0.2) were grown. Two-photon absorption (TPA) was studied at CO2 laser wave-length 9.4μm with pulse duration 1μs.
Myronchuk Galyna, Parasyuk Oleg, Piskach Ludmila, Alzayed Nasser Saleh, Prokhorenko Serhii, Piasecki Michal, Kityk Iwan   +6 more
doaj   +1 more source

Femtosecond Optical Nonlinearity of Nanodiamond Suspensions

Applied Sciences, 2021
High pressure-high temperature (HP-HT) nanodiamonds and detonation nanodiamonds have unique optical properties and are promising materials for various applications in photonics.
Gennady M. Mikheev, Viatcheslav V. Vanyukov, Tatyana N. Mogileva, Konstantin G. Mikheev, Alexander N. Aleksandrovich, Nicholas A. Nunn, Olga A. Shenderova   +6 more
doaj   +1 more source