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US 4,435,809 AGranted
Passively mode locked laser having a saturable absorber
AssigneeBell Telephone Laboratories, Incorporated
InventorsWon-Tien Tsang, Jan P. van der Ziel
Life of this patent
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Abstract
A region of saturable absorption is produced in semiconductor lasers by proton bombardment and results in subpicosecond optical pulses.
Claims9
A semiconductor laser having an active layer, first and second cladding layers on opposed surfaces of said active layer,
- characterized in that
- said active layer further comprises a saturable absorption region, said saturable absorber region being a proton bombarded region.
Dependencies are inferred from the claim text.