two-photon - significado y definición. Qué es two-photon
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Qué (quién) es two-photon - definición


Two-photon excitation microscopy         
  • Diagram of in vivo brain function imaging. Shows the general schematic for imaging, along with neuronal and vascular images. Imaging was performed using various fluorescent dyes.
Two-photon excitation microscopy (TPEF or 2PEF) is a fluorescence imaging technique that allows imaging of living tissue up to about one millimeter in thickness, with 0.64 μm lateral and 3.
Two-photon photoelectron spectroscopy         
  • A laser pulse is first split using a [[beam splitter]] into two different laser lines. One laser line is used to create its second harmonic, giving it a higher photon energy which will serve as the probe pulse. The other laser line passes through a delay stage, which allows the experimenter to vary the delay between the laser pulses impinging on the sample.
Time-resolved two-photon photoelectron (2PPE) spectroscopy is a time-resolved spectroscopy technique which is used to study electronic structure and electronic excitations at surfaces. The technique utilizes femtosecond to picosecond laser pulses in order to first photoexcite an electron.
Two-photon physics         
BRANCH OF PARTICLE PHYSICS CONCERNING INTERACTIONS BETWEEN TWO PHOTONS
Gamma-gamma physics; Photon-photon scattering; Photon–photon scattering; Scattering of light by light; Light-by-light scattering
Two-photon physics, also called gamma–gamma physics, is a branch of particle physics that describes the interactions between two photons. Normally, beams of light pass through each other unperturbed.