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. 02, 2001
Filed:
Jul. 10, 2000
Applicant:
Inventors:
Jialuo Jack Xuan, Milpitas, CA (US);
Zhengda Pan, Newark, CA (US);
Chung-Yuang Shih, Cupertino, CA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 2/710 ;
U.S. Cl.
CPC ...
G02B 2/710 ;
Abstract
A laser-optical wave mixing technique is provided for forming a high density textured data zone in an efficient and accurate manner. A single coherent laser beam of wavelength &lgr; is split into two beams with roughly the same intensity. These two beams are then overlapped with a cross angle of 2&thgr; and focused at the disk surface, resulting in an intensity grating thereon. The intensity grating creates a wave-form pattern consisting of a series of high-energy laser beam lines that will heat the target surface and make surface topographical changes accordingly.