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:
Oct. 25, 2016
Filed:
May. 26, 2009
Applicants:
Boris Ryvkin, St. Petersburg, RU;
Juha Kostamovaara, Oulu, FI;
Inventors:
Boris Ryvkin, St. Petersburg, RU;
Juha Kostamovaara, Oulu, FI;
Assignee:
Oulun Yliopisto, Oulu, FI;
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/20 (2006.01); H01S 5/062 (2006.01); H01S 5/065 (2006.01); H01S 5/32 (2006.01);
U.S. Cl.
CPC ...
H01S 5/06216 (2013.01); H01S 5/2031 (2013.01); H01S 5/0655 (2013.01); H01S 5/3213 (2013.01);
Abstract
A single pulse semiconductor laser operating in the gain-switching regime comprises a plane asymmetric waveguide and an active layer in the waveguide, the ratio of a thickness of the active layer to an optical confinement factor of the laser being extremely large, larger than about 5 μm, for example.