Heterostructure laser with lattice mismatch

Coherent light generators – Particular active media – Semiconductor

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357 4, 357 16, 357 17, H01S 319, H01L 3300

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active

050480367

ABSTRACT:
Semiconductor heterostructure lasers having at least one lattice mismatched strain layer in the cladding proximate to the active region. Indium or phosphorus may be added in high concentration to form the strain layers. The strain layers may be spaced somewhat apart from the active region or may be adjacent to the active region. In either case, the strain layers decrease transparency current and increase differential gain.

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