Unipolar multiple-wavelength laser

Details Unipolar multiple-wavelength laser Unipolar multiple-wavelength laser

1998-02-25

2000-07-18

Healy, Brian

Coherent light generators

Particular active media

Semiconductor

372 46, 372 43, 372 50, H01S 319

Patent

active

060917512

ABSTRACT:
A unipolar multiple-wavelength quantum well laser comprises at least two stacks of layers of semiconductor materials. Each stack forms a quantum well laser working by intra-band transition and emitting a specified wavelength. The two stacks of layers are separated by a stack of layers of semiconductor materials constituting a quantum well transfer lattice which, under an electrical field, enables a transfer of electrons from the low level of the (conduction or valence) band of a quantum well of a first laser to the high level of the (conduction or valence) band of the quantum well of a second laser. FIG. 2b.

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