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:
Jun. 22, 2010
Filed:
Sep. 25, 2008
Yingjun MA, Fujian, CN;
Shijie Gu, Sunnyvale, CA (US);
LI Wu, Fujian, CN;
Hehui Wu, Fujian, CN;
Weimin Chen, Fujian, CN;
Yanli Wang, Fujian, CN;
Yingjun Ma, Fujian, CN;
Shijie Gu, Sunnyvale, CA (US);
Li Wu, Fujian, CN;
Hehui Wu, Fujian, CN;
Weimin Chen, Fujian, CN;
Yanli Wang, Fujian, CN;
Photop Technologies, Fuzhou, CN;
Abstract
A single longitudinal-mode laser includes a first mirror and a second mirror that define a laser cavity therein that does not include a linear polarizer. A birefringent gain medium can generate a lasing light at a lasing wavelength along a light propagation direction in response to a pump light at a pumping wavelength. The birefringent gain medium has an optical axis substantially perpendicular to the light propagation direction. A first wave plate positioned between the first mirror and the birefringent gain medium is a quarter wave plate at the lasing wavelength and a whole wave plate at the pumping wavelength. A second wave plate is positioned between the birefringent gain medium and the second mirror. The first wave plat and the second wave plate in part produce a single longitudinal mode in the lasing light.