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:
Jan. 27, 2009
Filed:
Oct. 16, 2006
Vikram Bhatia, Painted Post, NY (US);
Jacques Gollier, Painted Post, NY (US);
Martin H. HU, Painted Post, NY (US);
David A. Loeber, Horseheads, NY (US);
Daniel Ohen Ricketts, Corning, NY (US);
Chung-en Zah, Holmdel, NY (US);
Vikram Bhatia, Painted Post, NY (US);
Jacques Gollier, Painted Post, NY (US);
Martin H. Hu, Painted Post, NY (US);
David A. Loeber, Horseheads, NY (US);
Daniel Ohen Ricketts, Corning, NY (US);
Chung-En Zah, Holmdel, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The present invention relates generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling wavelength in semiconductor lasers. According to one embodiment of the present invention, a method of minimizing laser wavelength variations in a semiconductor laser is provided. According to the method, one or more of the laser drive currents is configured to comprise a drive portion and a wavelength recovery portion. The wavelength recovery portion of the drive current comprises a recovery amplitude Ithat is distinct from the drive amplitude Iand a recovery duration tthat is less than the drive duration t. The recovery amplitude Iand duration tare sufficient to recover carrier density distribution distorted by gain compression effects prior to recovery. Additional embodiments are disclosed and claimed.