Electron excitation is the movement of an electron to a higher energy state. This can either be done by photoexcitation , where the original electron absorbs the photon and gains all the photon's energy or by electrical Excited state , where the original electron absorbs the energy of another, energetic electron.... by photon
Photon
In physics, the photon is an elementary particle, the quantum of the electromagnetic field and the basic unit of light and all other forms of electromagnetic radiation.... absorption, when the energy of the photon is too low to cause photoionization.The absorption of photon takes place in accordance to the Planck's Quantum Theory.
In chemistry, photoisomerization is molecule behavior in which structural change between isomers is caused by photoexcitation. Both reversible and irreversible photoisomerization reactions exist.... . Photoexcitation is exploited in dye-sensitized solar cells, photochemistry
Photochemistry
Photochemistry, a sub-discipline of chemistry, is the study of the interactions between atoms, small molecules, and light . The pillars of photochemistry are UV/VIS spectroscopy, photochemical reactions in organic chemistry and photosynthesis in biochemistry.... , luminescence
Luminescence
Luminescence is light that usually occurs at low temperatures, and is thus a form of cold body radiation. It can be caused by chemical reactions, electrical energy, subatomic motions, or Stress on a crystal.... , optically pumped
Laser pumping
Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms.... laser
Laser
A laser is a device that emits light through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation.... s, and in some photochromic applications.
