The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1994
Filed:
May. 18, 1992
Dieter Baums, Ludwigsburg, DE;
Kaspar Dutting, Stuttgart, DE;
Olaf Hildebrand, Stuttgart, DE;
Wilfried Idler, Asperg, DE;
Gert Laube, Stuttgart, DE;
Michael Schilling, Stuttgart, DE;
Heinz Schweizer, Stuttgart, DE;
Klaus Wunstel, Schwieberdingen, DE;
Alcatel N.V., Amsterdam, NL;
Abstract
A semiconductor laser that is monolithically integrated on a substrate and whose cavity has a branched structure that is simply contiguous in a topological sense, and which includes a plurality of regions that enclose the cavity, is operated as a mode-locked semiconductor laser, with an alternating current flowing through at least one region in addition to a direct current. The frequency of the alternating current is related to the reciprocal of the round-trip time or an integral multiple of this reciprocal of light pulses generated by the alternating current in the semiconductor laser.