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commencer à apprendre
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this energy is emitted in the form of a photon
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non-radiative recombination commencer à apprendre
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it is passed on to one or more phonons and in the case of Auger recombination it is given off in the form of kinetic energy to another electron
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Band-to-band recombination commencer à apprendre
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electron moves from its conduction band state into the empty valence band state associated with the hole
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Trap-assisted recombination an energy level within the bandgap caused by the presence of a foreignatom or a structural defect commencer à apprendre
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occurs when an electron falls into a "trap"
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commencer à apprendre
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a process in which an electron and a hole recombine in a band-to band transition
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commencer à apprendre
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When the number of particles in the excited state is greater than the number of particlesin the ground state the material is in a state of
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commencer à apprendre
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The low energy part of the spectral
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characteristics will be related to transitions between dopant levels and edge bands. The maximum of LED’s output power refers to the photon’s energy which is a little smaller commencer à apprendre
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characteristics will be related to transitions between dopant levels and edge bands. The maximum of LED's output power refers to the photon's energy which is a little smaller
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than the width of the energy gap. The phenomenon of "fill-band" is commencer à apprendre
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than the width of the energy gap. The phenomenon of "fill-band" is
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responsible for the high energy part of the spectral characteristics commencer à apprendre
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increasing of the current flowing through the diode. commencer à apprendre
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increasing of the current flowing through the diode.
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commencer à apprendre
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contains a coherent beam of light
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between reflective surfaces-mirrors so that the light passes through the gain medium more commencer à apprendre
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between reflective surfaces-mirrors so that the light passes through the gain medium more
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than once before it is emitted from the output aperture or lost to diffraction or absorption commencer à apprendre
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than once before it is emitted from the output aperture or lost to diffraction or absorption
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commencer à apprendre
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in each passage through the active material the intensity gains
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commencer à apprendre
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reached when the optical gain of the laser medium is exactly
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balanced by the sum of all the losses experienced by light in one round trip of the laser's commencer à apprendre
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balanced by the sum of all the losses experienced by light in one round trip of the laser's
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commencer à apprendre
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commencer à apprendre
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obtained when the phase of the signal in cavity is equal the phase
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of the signal after transition through whole resonator commencer à apprendre
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of the signal after transition through whole resonator
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commencer à apprendre
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current at which optical gain of the laser medium equals the
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commencer à apprendre
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