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:
Mar. 25, 2014
Filed:
Jul. 22, 2011
Shaokai Wang, Beijing, CN;
Erjun Zang, Beijing, CN;
YE LI, Beijing, CN;
Jianping Cao, Beijing, CN;
Zhanjun Fang, Beijing, CN;
Shaokai Wang, Beijing, CN;
Erjun Zang, Beijing, CN;
Ye Li, Beijing, CN;
Jianping Cao, Beijing, CN;
Zhanjun Fang, Beijing, CN;
Abstract
A method for quasi-synchronous tuning of laser wavelength or frequency of grating external-cavity laser and a corresponding laser are provided. A grating or mirror is rotated around a quasi-synchronous tuning point (P) to achieve the quasi-synchronous tuning of frequency selections by grating and resonance cavity, wherein, on the xOy coordinate plane, from the perspective of actual physical space of the laser, the rotation center P(x, y) satisfying the quasi-synchronous tuning condition can be considered as being extended from the rotation center P(x, y) under the conventional synchronous tuning condition to the region enclosed by two parabolas near P. According to the present disclosure, approximately-synchronous tuning of laser is achieved with simple and flexible designs.