The use of two-photon absorption (TPA) for such applications as microscopy, imaging, and photodynamic therapy (PDT) offers several advantages over the usual one-photon excitation.
Emma Robbins +4 more
doaj +1 more source
Dispersion monitoring for high-speed WDM networks via two-photon absorption in a semiconductor microcavity [PDF]
Due to the continued demand for bandwidth, network operators have to increase the data rates at which individual wavelengths operate at. As these data rates will exceed 100 Gbit/s in the next 5-10 years, it will be crucial to be able to monitor and ...
Guo, Wei Hua +26 more
core +1 more source
Entangled two-photon absorption spectroscopy with varying pump wavelength [PDF]
In virtual-state spectroscopy, information about the energy-level structure of an arbitrary sample is retrieved by Fourier transforming sets of measured two-photon absorption probabilities of entangled photon pairs where the degree of entanglement and ...
Mertenskötter, Lutz +3 more
core +1 more source
Two-photon-absorption-based OSNR monitor for NRZ-PSK transmission systems [PDF]
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 +10 more
core +1 more source
Two-Photon Absorbing Molecules as Potential Materials for 3D Optical Memory
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
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 +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]
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 +17 more
core +1 more source
Line-Shaped Illumination: A Promising Configuration for a Flexible Two-Photon Microscopy Setup
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 +2 more
doaj +1 more source
Nonlinear optical thresholding in a 4-Channel OCDMA system via two-photon absorption [PDF]
We demonstrate the use of a Two-Photon Absorption based detector in an OCDMA system.
K. J. Dexter +12 more
core +1 more source
Expanding the range of chromatic dispersion monitoring with two-photon absorption in semiconductors [PDF]
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 +5 more
core +1 more source

