Multiple wavelength broad bandwidth optically pumped semiconductor laser
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorRon Kaspi
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Abstract
An optically pumped semiconductor laser with the active region partitioned such that different wavelengths can be emitted simultaneously from each partitioned region. The material of the partitioning layers is selected to be transparent to the pump wavelength, an electronic barrier to carrier diffusion, and epitaxially compatible with subsequent layers of the laser structure.
Claims7
An optically pumped semiconductor laser for simultaneously emitting a plurality of wavelengths, comprised of:
- a pump wavelength absorbing region having carriers subdivided into n+1 regions by n partition layers;
- the partition layers being transparent to a pump wavelength, being an electronic barrier to carrier diffusion, and being epitaxially compatible with subsequent layers of the semiconductor laser structure;
- and
- one or more essentially identical quantum well structures located within each subdivided region of said absorbing region, but with the one or more quantum well structures of at least one subdivided region being different than any other subdivided region, whereby
- a plurality of wavelengths may be simultaneously emitted.
An optically pumped semiconductor laser for simultaneously emitting a plurality of wavelengths, comprised of:
- a pump wavelength absorbing region having carriers subdivided into n+1 regions by n partition layers;
- the partition layers being transparent to a pump wavelength, being an electronic barrier to carrier diffusion, and being epitaxially compatible with subsequent layers of the semiconductor laser structure;
- and
- one or more thick active regions for absorbing pump photons and generating lasing photons, located within each subdivided region of said absorbing region, with the one or more thick active regions of at least one subdivided region being different than the one or more thick active regions of any other subdivided region, whereby
- a plurality of wavelengths may be simultaneously emitted.
Dependencies are inferred from the claim text.