Electrically wavelength tunable semiconductor laser

Details Electrically wavelength tunable semiconductor laser Electrically wavelength tunable semiconductor laser

1990-10-15

1992-03-31

Epps, Georgia

Coherent light generators

Particular active media

Semiconductor

372 20, 372 32, 372 45, 372 46, 437129, H01S 319

Patent

active

051014149

ABSTRACT:
A semiconductor laser in which the photons injected from its waveguide region into the laser active region are those whose energies differ from the energy sum of the chemical potential of the electron-hole pairs and the energy of the longitudinal acoustic phonons by less than one-half the thermal energy is described. A current directed into the photon emission region in the area of the Bragg grating causes photons of this energy to be injected into the laser active region which is constituted of a layer of indium gallium arsenide phosphide.

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