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:
Sep. 16, 2014
Filed:
Mar. 06, 2013
Ofer Shapira, Cambridge, MA (US);
Song-liang Chua, Singapore, SG;
BO Zhen, Cambridge, MA (US);
Jeongwon Lee, Boston, MA (US);
Marin Soljacic, Belmont, MA (US);
Ofer Shapira, Cambridge, MA (US);
Song-Liang Chua, Singapore, SG;
Bo Zhen, Cambridge, MA (US);
Jeongwon Lee, Boston, MA (US);
Marin Soljacic, Belmont, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
An organic dye laser produces a continuous-wave (cw) output without any moving parts (e.g., without using flowing dye streams or spinning discs of solid-state dye media to prevent photobleaching) and with a pump beam that is stationary with respect to the organic dye medium. The laser's resonant cavity, organic dye medium, and pump beam are configured to excite a lasing transition over a time scale longer than the associated decay lifetimes in the organic dye medium without photobleaching the organic dye medium. Because the organic dye medium does not photobleach when operating in this manner, it may be pumped continuously so as to emit a cw output beam. In some examples, operation in this manner lowers the lasing threshold (e.g., to only a few Watts per square centimeter), thereby facilitating electrical pumping for cw operation.